Preflight
Interview: James Voss
The
International Space Station Expedition Two Crew Interviews with
Flight Engineer 1 James Voss.
Q:
The ISS Expedition Two Crew Interviews with Jim Voss, Flight Engineer
1 on this mission to the International Space Station. Jim, let's
start by learning a bit about you. Can you tell me why it is that
you wanted to become an astronaut?
A: Well, as a child, I did a lot of reading; science fiction was
one of my favorite things to read, and it seemed like it was a
very exciting sort of a job, and I liked the kind of work that
these fictional astronauts did. Of course we didn't have a space
program at that time, but as soon as we did I thought, well, that
would be a really neat thing to do. And that thought was probably
in the back of my mind the entire time I was growing up. And as
I got into a position where I could possibly think about doing
that, I decided to start applying; and they created the Mission
Specialist program in the shuttle program just for me, I know,
and that allowed me to start applying because I was an engineer,
not a test pilot. And so I was able to fulfill what started out
as just fiction but became a dream, and then became reality.
Amongst the astronauts who work for
NASA and for the other agencies around the world, there are a
wide variety of backgrounds in terms of academics and career path.
What's yours?
I'm an aerospace engineer. I got a bachelor's degree from Auburn
University in aerospace engineering, and then a master of science
from the University of Colorado in aerospace engineering sciences.
And then I was a soldier for the first fifteen years of my career
before I came to NASA to finally get to use my aerospace engineering.
So, you were a, if I recall, you're
[an] Army officer.
That's right. I just recently retired, so I'm now a colonel, retired,
in the U.S. Army.
Is the military background, do you
find, is that a part of, how important a part do you find that
that is, contributed to the person that you were that NASA decided,
yes, we want?
Well, I think that was pretty important because you learn a lot
of things in the military that help you to achieve goals. Discipline,
hard work, a work ethic that is important to accomplishing the
mission; and placing other things ahead of self. All of those
things contribute to preparing you to do something like a space
flight. And so I think that those characteristics that I either
learned or developed a little bit further through my military
service, aided me in becoming an astronaut and in doing my job
as an astronaut.
As you look back, all the way back
to your childhood, who do you see as the people who have been
or still are the most significant influences in your life?
Oh, I've had a lot of people who have strongly influenced my life
and have greatly benefited me, starting with my grandparents,
who actually raised me- Jim and Millie Wright. They were, I think,
the foundation for who I am today. And then there were other people,
including Jack Damewood, who was my ROTC instructor in college
who, I think, had a profound effect on where I headed in life,
influencing me to become an infantry officer and instilling some
of those characteristics that we were talking about before so
that I would apply them in my military career. And another area
that I think was a great influence was the coaches that I've had
through my, my athletic career- wrestling in high school and college
and my football coach in high school. I think they also taught
discipline, self-discipline, and a desire to achieve- a lot of
the things that you carry through in a career. So Bobby Barrett
Ray Campbell, and Swede Umbach, those were all guys that had a
terrific influence on my life.
You've been involved in the International
Space Station Program as an astronaut for a number of years now.
Give me your perspective on how the partner nations, and the space
agencies, and the people themselves, have matured in their ability
to work together.
Yes, as you know, during Phase 1, I was a backup for some of our
astronauts who flew to the Mir, so I got an early taste of our
interaction between us and the Russian Space Agency. And, we had
a very difficult time learning to work together: we have different
cultures, we have different ways of approaching the space program,
the ways that we train, the way that we operate in space; our
perspectives-our shorter flights on the shuttle versus their longer
flights that they have on the Mir. So we had a lot to learn about
working together, and over the last five or six years we have
learned a great deal, and I've seen huge strides that we've made
in the way that we interact, the way that people on the lower
levels work together to accomplish things and to produce joint
products, and the way that our managers at the higher levels have
learned how to interact, resolve differences, and to solve the
problems that face us on a daily basis. So I think we've come
a long way and we're headed in the right direction.
Got an example that comes to mind
about how you've seen that improvement?
Well an area that I guess I could use as an example
would be emergency procedures. We have two separate, distinct
pieces of the space station, in some people's minds-the Russian
segment and the U.S. segment. And we developed independent emergency
procedures for those two pieces: the Russians developed their
part, the U.S. developed their part, but as a crew, we looked
at that and said, we've really got to come together with one.
Well, they were working behind the scenes all this time, trying
to come up with one joint procedure, and as we've gotten closer
to flight we've seen the results of their work, which is a combined
procedure that allows us to include all of the parts of the space
station in one large, emergency procedure that considers both
pieces of it as they're put together, because that's how we have
to view it, and they were able to come together and do that, work
together in a joint group and produce a joint product.
You and your Expedition crewmates
got a sneak peek at the International Space Station last May,
when you were assigned as crewmates to fly on STS-101. Can you
give me, first of all, your impressions of the station at that
stage, at that time, and second, can you tell me whether or not
that experience has been beneficial for you and Yury and Susan
since then, as you've come back and continued to prepare?
Yes. We were blessed, actually, with the opportunity to go to
the space station early and to see what it was like, to learn
about it, to get the feel of it. We were very fortunate to be
in a good spot that the space program needed us to go up there
and help with the repairs on the Functional Cargo Block, the FGB.
So when Susan and Yury and I flew up there, it was a perfect opportunity
to check out our future home. And, you know, to be completely
honest with you, I wasn't sure if I was going to enjoy a four-and-a-half-
or five-month stay in a very small space, and I had sometimes
thought about that. But after being up there and thinking about
it, I realized that in fact I could stay and live and work on
board the International Space Station in the configuration we're
going to have while we're there. And that was a great psychological
factor, as far as I'm concerned-it helped to motivate me, it improved
my morale, and it made me realize that I could work there.
You are riding to orbit to reach the
station on space shuttle Discovery, on STS-102. Summarize the
goals of the mission for me-or are you the goal of the mission?
Well, I think that the main purpose of this flight is to exchange
the crew, to send us up there to replace the Expedition One crew,
who's on board now, and while we're up there there's a lot of
other things-important work-that needs to be done to prepare for
future missions. We are installing some things on the outside
that we need to put into place for future missions to prepare
for leaving a particular docking port available for putting other
pieces on - for putting on a cradle that will hold other pieces
of the space station, installing some things and reconfiguring
some cables that will allow the space station remote arm to be
installed and save work on that particular flight. So we're doing
a lot of things like that, as well as transferring over several
other racks-these are the large closet-type things that go inside
the Laboratory module, which will already be up there, and we'll
install those, and we'll set them up, activate systems, and make
sure that they're all working right so that we can use them in
future experiments and work on the space station. So there's a
lot to this mission, a lot of transfer, and a lot of stuff outside
and inside that we have to do.
Crewmember transfer is, of course,
one of the top priorities, and the first of that begins on the
day the shuttle docks to the station with Yury Usachev moving
on to ISS and Yuri Gidzenko moving on to the shuttle. Can you
tell me, first of all, why that pair was chosen, rather than Commander
for Commander, and second, what work has to be done in order to
complete a transfer of crewmember?
Well, we chose to change the crewmembers this way because it's
very important to have some face-to-face handover time with the
other crew, and we know that the Commander-to-Commander face-to-face
handover time is going to be very important. So Bill Shepherd
and Yury Usachev need to have some time together on the space
station. So Yury's going over the very first day to give him the
maximum amount of time possible while we're docked. Susan and
I are staying on the shuttle mainly because we have other shuttle
work to do; we're members of that crew first, and then, when possible,
we'll transfer over to the station. He's changing with Yuri Gidzenko
because Shep, of course, needs to stay over there to talk to Yury,
and Sergei Krikalev is the experienced Flight Engineer that they'll
want to keep on board until I get over and swap out with him.
So, it's very important that Yury get a lot of time. Now, during
this handover time, what we do is exchange information mainly.
There's a little bit of exchange of equipment-your personal gear
and a thing that we call a lozhiment: it's your seat that goes
in the Soyuz. It includes your emergency equipment, your suit
that you would wear in a descent in the Soyuz vehicle, and it
includes the seat that is made just for you; so those have to
be swapped out. And then it's information exchange: we are going
to learn, in that four or five days that we have together with
the old Expedition crew, everything that we didn't learn in training,
all of the differences to station that we didn't know about, the
nuances of exactly how to use the toilet, and exactly how we do
the things that we've got to do, what the daily routine is. And
the thousands of little things that they've learned over a period
of four months that we want them to share with us in just four
or five days.
The day after that first exchange
is the day that is scheduled for the first space walk of this
mission to occur. And as you said you and Susan remain shuttle
crewmembers-you two will be doing this space walk. Tell me about
the sequence of events; what jobs are to be conducted during this
EVA?
Well, the first thing that we're going to do is reconfigure some
cables on what's called the Pressurized Mating Adapter #3-it's
sort of a cone-shaped device that is used as an interface between
the Node, which is sort of a central piece of the space station,
and other pieces. We have to move it from one side to another
side; well, before we move it we have to remove all the cables
that are connected to it, that provide power to it and to other
vehicles. So, we will go out and remove all these cables, put
them into dummy connectors on the PMA, so then it's free to be
moved to the other position. Then we remove an Early Communications
antenna that's actually in the way of where it will be moved,
so we've got to remove that antenna-it's no longer needed now-so
we'll take it off, put it inside, and then we're going to move
something that's called the Lab Cradle Assembly. It's like a small
truss with a claw on it that can grab onto things that we bring
up later to put onto the space station, and this claw will grab
onto something to hold it into place. So we're putting this on
board on the Lab-it, the Lab was so large in diameter this could
not be launched in place so we have to carry it up there, stick
it on, bolt it down, and pin it in place. So we'll be picking
that up-I'll be on the robotic arm, and Susan will go over to
where we're going to install this to prepare the work site, and
then they'll move me on the robotic arm over, holding on to the
Lab Cradle Assembly, into position; we'll slide it into place,
we'll pin it, and bolt it into place, and then it'll be ready
to do its job on future flights. And the last thing, the last
major task we'll do is moving something called the Rigid Umbilical.
This is a tray that has some cables on it that will be connecting
up the power and data and signals, and video signals from the
Laboratory module to a place that will allow the space station
robotic arm to receive power, to send video. And so it's basically
stringing some cables, but they're very delicate cables so they
put them on a rigid structure that we have to move over there,
bolt into place, and then make the connections so that when the
arm does get there on the next flight, 6A, it'll be able to have
power and to operate.
Most people think that having experience
at something is helpful when you go back to do it a second time;
you've already done one space walk outside of this station-is
that going to help you?
Oh, it will. This will actually be my third flight, third space
walk; one of them was on the space station. And the operations
there, and the work, is pretty much the same no matter what the
structure is you're operating around, but having seen the space
station from outside, it'll be I think a familiar place to me,
except now it's much bigger because we've got the solar arrays
and the Laboratory module that have been added. But it will help
a little bit, I think. And a lot of the operations will be things
that I've done similar operations before.
The schedule for STS-102, for the
following day after your space walk, calls for the transfer of
another crewmember-in this case, you-as well as the first-ever
mating of the pressurized logistics module, this one named Leonardo,
to the station. Talk us through the events of that day and what
it's going to be like, do you think, to actually become a crewmember
of that station.
Yes. Our crewmates on STS-102 will already have moved the Pressurized
Mating Adapter I was talking about before to another port; the
MPLM, the Multipurpose Logistics Module, will be taken out of
the payload bay of the shuttle, it'll be moved up and just plugged
in to the Node. We have a very complicated apparatus called a
Common Berthing Mechanism that will allow us to mate them together;
some big bolts that will pull it together and make a very good
seal between the Node and the MPLM; and then we'll be able to
open up the hatch, once we've checked that we have good pressure
integrity. And the MPLM is like a very big high-tech closet. Inside
there is a lot of equipment: there are additional racks-that's
one of the beauties of having this module is you can move very
large things up, and then you can transfer them through the hatches
and we don't have to move a thousand small components. It can
already be assembled, all of the experiments can be in the racks,
all the hardware can be installed-we just take the whole thing
and move it and plug it in to the Laboratory module, make a few
connections, and it's ready to go to work. So it's really a very
nice method of moving things to space. When we open the hatch,
we have a lot of things to do to reconfigure what we call the
vestibule area; it's between these two areas. We have to remove
some things, install some other things to get it ready to allow
us to open the hatch and to operate inside this new module. Then
we'll go inside there, we'll turn on the lights, and we'll start
hauling cargo out.
You'll be on that side; you will be
a station crewmember and involved in this transfer at that point?
Yes. Yury and I will be doing the reconfiguration of the stuff
in the Multipurpose Logistics Module to get it ready to transfer.
And then, he and I, along with Shep and Sergei and probably some
other people, will be hauling things out of there, putting them
into station. We have to make sure we get things in the right
places, so we'll have somebody who's there responsible for ensuring
people are taking things to the right places, installing them
temporarily or permanently in the right spot. It'll be an all-day
activity plus to unload everything and put it in the right place.
So I'll be over there as a crewmember, on the station at that
time. I will have done my handover while they were actually moving
the MPLM, and so, at that time, it'll be Shep, Yury, and myself
who will be the actual station crewmembers at that time, and I'll
continue my handover throughout the day as we're working. I'll
be learning more and more about the station, I'll have some dedicated
handover time, but a lot of my handover will be while we're working
together.
And, I guess the operations then,
moving things out of and back into Leonardo, will continue for
a number of days?
Yes, and everything is carefully choreographed. We have a lot
of people on the ground who have thought about every aspect of
where we move things to make sure there's an empty spot for it,
and then to move things back to the MPLM, the empty cases, bags,
and hardware that we're going to ship back down to the ground
as well. So, they've done a lot of work to make this all work
very smoothly, so we don't wind up with half-a-ton of cargo in
the aisle while we're trying to move something large past it.
There is a second and, perhaps, a
third space walk that's scheduled during STS-102, but now you're
a station crewmember at the time that these are coming along.
What role does the station crew play in this case, while there
are shuttle crewmembers working on the outside?
Well, during this particular EVA, we won't have a large role other
than to check a few things to make sure some things are powered
off. The ground will also be doing that while they're doing their
EVA. Andy Thomas and Paul Richards will be doing this EVA; they'll
be installing the Early Ammonia Servicer-it's a device that carries
some ammonia that we use in our Thermal Control System should
we have a leak and they will be installing some other external
hardware that we might need for future missions. I will be doing
my handover that day, mostly; I'll spend a lot of time working
with Sergei Krikalev and with Shep to learn all of the different
things about the station that I will need to know to be a full
Expedition crewmember.
The final one of the transfers-Susan
Helms for Bill Shepherd-will come after the conclusion of all
of the EVAs; subsequent to that is when the MPLM is removed from
the station. Is that a procedure that's any more difficult than,
say, simply reversing what happened when it was installed?
Well, it will be a reverse of that procedure, but every time we
do one of these things, even though they seem routine, they're
all very complicated and extremely difficult, and a lot of them
we've never done before. Like this: the first time we will have
ever removed an MPLM from the station and put it back into the
payload bay of the shuttle. Those are very complex and difficult
tasks to do. The robotic operations, just the physical unbolting
of this thing after it's been there for a few days, is somewhat
complicated. So there's nothing routine about them. It will be
just a reverse of what we did before but still, it's one of those
groundbreaking new things that we expect to work very well, and
we hope that it will.
At about this point then, after all
of that is done, a week's worth of docked operations between shuttle
and station crews will be about to come to an end. Do you expect
that there…as we progress in the life of this space station
and set traditions, you suspect that there will be some sort of
farewell ceremony or to acknowledge the change in command of this
station?
Yes. The space station is somewhat like a ship, and-it's a spaceship-and
we will have a welcome ceremony, welcoming the new crew and the
shuttle crew, and we'll have a farewell ceremony, I think. It'll
be, I think, a happy/sad moment for the Expedition One crew: they'll
be very happy to be going home to their families; they'll be a
bit sad for leaving this station that they have been the inaugural
crew on; but I think it'll be a very pleasant time for us. We'll
be starting a new adventure - about to be on our own with no one
there to go ask questions to, and yet we'll be sorry to see our
STS-102 crewmates leaving, and we'll be sorry to see that resource
of the Expedition One crew leaving us behind, and it'll be a little
harder to talk to them after they get back to the ground and start
their rehabilitation.
On this crew, on the Expedition crew,
you are called the Flight Engineer. Tell me what that is, and
then tell me how you expect that you and Yury and Susan will be
spending your time, day-to-day or week-to-week, on board the station;
outside of the mileposts of arrivals of new modules or whatever,
what's life like on the station?
OK. They needed a way to differentiate between crewmembers; they
tried a lot of different names, and they needed a "Commander"
and then the rest of us guys, and came up with "Flight Engineer"
as just as a generic name. It's similar to what's been used on
the Mir for a long time. But we think of all of ourselves as Expedition
crewmembers, space station crewmembers, and once the flight gets
going we'll all work on anything that happens to come up in the
station. We'll share the good jobs, we'll share the dirty jobs,
and we'll all work together. Yury, of course, is our Commander,
and he'll make the decisions, but Yury has a very nice personality
for working with, and he doesn't take a very authoritarian approach.
It's more a, let's look at the schedule and decide what we should
do. It's a very nice way of working with us. And we will probably
spend our days doing the activities that the ground has decided
is appropriate for that day of the mission, that part of the mission,
that week of the mission. And it'll be some normal routine activities
every day, the normal kind of things to make sure the space station
systems are working correctly. We expect to be doing some repair
work, like the Expedition One crew is doing, as we get these new
systems up and running; we'll find problems and we hope we'll
be able to solve them with the help of all of our specialists
flight controllers on the ground. And then we'll have periodic
spikes of activity as we see another shuttle crew arriving on
6A, another shuttle crew arriving on 7A, and then a shuttle crew
arriving on 7A.1, when we go home. There's also a Soyuz crew that's
going to be arriving to change out the Soyuz that's up there.
There will be a new module that will come up, called the Docking
Compartment, while we're up there, and we'll have a Progress vehicle
that will arrive. So, almost every ten days to two weeks we're
expecting some major spike in our activity-an arriving vehicle
of some type with a huge flurry of activity for another week or
ten days right after that. It'll be quite busy.
In the configuration it will be when
you arrive there, the International Space Station will have a
lot more capability than it did when the Expedition One crew arrived.
Tell us how the presence of the U.S. Laboratory module changes
the command and control capabilities of this station and its relationships
with Mission Control in Korolev and in Houston.
Yes. There will be a huge transition when the Laboratory module
gets there and gets activated. The center of mass, of control,
of the station, moves to the Laboratory module; it will have the
computers that are running the command and control software that
control the entire space station. We still have the ability to
hand back off to the Russian segment should there be problems
with these computers, or with control of the space station, but
it's intended for that control to be through the command and control
computers in the Laboratory module. The same thing happens on
the ground: when we switch over control to the U.S. Laboratory,
the control of the station from a ground perspective also shifts
from Moscow to Houston, and Houston then becomes the primary,
or main, controlling center. And that's a pretty huge change from
the way that we've done business for Expedition One, so I think
we'll have some growing pains. I'm hoping that Expedition One
works all those out before we get there-they've got about three
to four weeks to get things running smoothly, but they will be
activating the Laboratory module during that time, and I think
we'll be learning how we're going to operate in this new phase
during that time as well as during our increment.
One other thing that will be different
for you guys than it was for the Expedition One crew is that you
should have greater communications capability whether it be in
terms of voice communication, the duration of voice communication,
as well as video communications back and forth. How do you see
that all of that is going to impact your day-to-day activities?
Yes, you're right. We will have a lot better communication; not
constant, but in the 50-to-60% of the time frame, maybe even more
than that. You would think that that would mean we would be talking
all the time; in fact I'm hoping that we will have resolved all
of the start-up problems from the initial activation of systems
on the station-that's why we've had so much conversation during
the times that they've had the ability to talk. The Expedition
One crew has had so many problems to resolve that they've had
to talk every spare minute that they've had- we hope that most
of those will be resolved. We hope, also, we'll have better communication-it
will be we'll be able to exchange information through other means
- through written as well as oral communications. And that way
we hope to minimize the amount of time that we talk on the radio.
Our plan is to have a communication session in the morning, and
then have one in the evening, and during the day of course we
can talk and exchange information but generally, it won't be a
constant running conversation the entire day. It'll be while the
ground needs to get us information or while we need to provide
them with information, but we'll tend to save things up so we
can…we're trying to transition into a normal laboratory-type
operation, where we would work along, then we'll give a status
report periodically-and it may be more than twice a day at the
start, but we hope to sort of head in that direction as the station
becomes more mature and we learn a little bit better how to operate.
Let's talk about some of those things
that you're going to be doing, some of that science. As you guys
get settled in, you begin scientific research work inside Destiny.
Can you give me an overview of the science that is planned for
Expedition Two?
I can try. During our Expedition we have a number of different
types of experiments. They range from radiation experiments-we're
trying to characterize the radiation environment of the space
station. It's different from the shuttle or from the Mir because
we have different structures, different materials, a different
orbit, a lot of things that we need to learn more about to look
at the long-term effects on human beings and materials due to
radiation in space, so we have a whole suite of electronic devices
that are measuring the radiation that we will have while we're
up there. There's also some experiments in life sciences - biological-type
experiments where we're doing, looking at plant growth, we're
looking at protein crystal growth, which is used in the research
for pharmaceuticals. We're growing some crystals that will be
used for studying the molecular structure of crystals. In space
we can grow crystals much larger and more orderly because we don't
have the effects of gravity that sometimes distort them, won't
let them grow as large, and then if you can better understand
the structure of the crystals you can understand how to enhance
them or how to remove parts of them that are not good. We also
have some vibration isolation experiments. You know, everything
on board the space station-including us- we induce some vibrations;
well, a lot of experiments like those protein crystal growths
other crystals different types of things that you want to not
have vibrations affecting them, so we're going to look at the
way to isolate the experiments from the vibrations that we and
the machinery on board the space station induce. And we'll be
characterizing that during our Expedition so that on later flights
they can utilize this isolation, this vibration isolation system.
And so we have quite a variety-medical experiments as well. [We've]
got a number of experiments that we're doing, on ourselves, that
will help to characterize the effects of long-term space flight
on the human body. And that's been done over a period of years
on the space station Mir as well as on the shuttle, but now we
hope to do more focused research in a lot of different areas and
gather a lot more data so that we will fully understand the effects
on the human body due to long-term stays in space.
That and some of the other things
that you referred to at least sound similar to the kinds of experiments
that have been done on the shuttle before. Is the science here
going to be much different than what has been done on the shuttle?
Actually no, because we have always looked at the same type of
things. You can do certain things in space: you can work with
very low gravity and that's one of the main aspects of it, or
you can look at very low vacuum-those are two of the things that
you can do differently in space than what you can do on the ground.
The absence of gravity allows you to look at an experiment with
a few fewer variables, and that allows you to focus on certain
areas more and cast out those things that confuse you on the ground
sometimes. We had the same ideas for shuttle that we have now,
the same use of that environment to better do experiments or research;
we're just going to be able to do them over a much longer time
period now: we can grow crystals not for fourteen days, but for
fourteen months! That's an exaggeration, but it's the idea-we
can spend a lot of time. And eventually the space station will
have real scientists-not engineers like me doing work for scientists-but
you'll have real scientists up there who are doing work, that
are looking at their results as they get them, and then they're
changing their experiment to do other things with it; just like
that would in a laboratory, in that laboratory that we'll have
in space.
While the engineers like you are doing
that work up there, you're going to be in contact with scientists
on the ground at a payload center at the Marshall Space Flight
Center in Alabama, where much of the construction of Destiny was
done. Talk for a minute or two about how that coordination works,
and how the people at the payload center are going to be able
to contribute to the science operation.
We hope to be very interactive with them. We know that we can't
do the science the way that the Principal Investigators would
be doing their science, but we can operate as an extension of
those people: we can be their hands and their eyes and we can
make observations for them, we can do their experiments. But,
when we have questions or problems, we want to be completely interactive:
we expect to have video teleconferences, we expect to be able
to show them the things that we're talking about, and to be able
to ask questions and to talk with the investigators themselves
so we can get, firsthand, what we need to be trying differently
or doing differently. If we run into problems we want to go right
to the person who is the expert on this apparatus or this experiment
in the entire world and let them help us to resolve the problems.
So we're kind of an extension of them, and the payload operations
center at the Marshall Space Flight Center will have all of these
experts or they'll be on call-they don't have to be there all
the time-but they'll be available when it's time for their experiment
to operate. They'll be in contact and then they'll be called in
should they be needed to assist us.
In the early weeks of your time on
board the station you're scheduled to be working with the Human
Research Facility. Can you give us just a little bit of detail
about what that is and the kind of research you'll be conducting?
Yes. The Human Research Facility is a rack - one of these closet-sized
things that have a lot of different experiment equipment in that
one rack; it provides power to a lot of different devices. An
example would be an ultrasound device-it will allow us to do ultrasound
of the human body. There's also a device called a GASMAP-it has
gases in tanks that allow you to introduce a known mixture of
gas into an experiment or to measure the gases by comparing with
known sources. This rack can have a lot of different experiments
in it, and it has its own computer that is used specifically for
running the experiments that are in this rack. It has a wide variety
of uses and purposes that we can apply. We're going to be checking
out all of the individual pieces of it while we're up there, making
sure they're working, before we start doing experiments with them
later.
Is this related to what you referred
to a moment ago about the experiments where you will make yourself
the subjects as well?
Sometimes those, that, in fact, will be the case. We don't have
any specifically that we are the research subject on for the Human
Research Facility, though we do have others that are separate
from that.
Along with your attention to science
while you're working inside Destiny, there is a space walk scheduled
for the first stage of the mission inside the transfer compartment
of the Zvezda module; you get to make that trip as well. Can you
tell me about what you're going to do there and how you go about
doing it.
Yes. The transfer compartment is like a little round ball on the
end of the Service Module; it's where different pieces can connect
in to the Service Module. The Russian system uses a cone and probe
kind of a system, so you've got a cone and the probe comes into
it. Well, this cone is inside this compartment, and after something
is docked to it-like, right now, the FGB and the Service Module
are docked, you have those two pieces together-well, you pull
this cone out and discard it or move it out of the way. This cone
is still there and we want to reuse it; we can reuse it. We pull
it off and it's basically just in the way, but what we're going
to do is remove this cone, rotate it 90°, and put it on to
another one of the ports so that another module can come up and
dock into that cone. If you had cones on every one of the docking
ports, there would be no room inside at all, so they have one
cone that gets moved from one place to another. Well, to move
this cone we have to remove a large cover, and that means we have
to expose that piece to space. So we'll go inside, close all the
hatches. We'll evacuate the area, and then we will open this,
the side where we want the cone to go, move it out of the way.
Then we'll move the cone from one port to the other port, and
it will be ready to receive the Docking Compartment, which is
a Russian module that will be coming up in about another month
or so.
It sounds like very tight quarters
for two men wearing spacesuits.
It's very close quarters. The transfer compartment is not very
big, so we've practiced this in Russia several times. The actual
transferring the cone is not terribly difficult, but choreography
is critical, so that one person is out of the way and doing certain
operations while the other person is transferring the cone, and
then it takes both of us to hold it in place and secure it in
place with the latches.
Before you see a second shuttle crew
you're due to receive a new shipment of supplies on a Progress
ship; you referred to that earlier. Tell us about how as a crew-as
a station crew-you all have to work to prepare to get rid of the
Progress that's there, what you have to do to make sure that the
arriving one is able to dock safely, and what do you find inside
when you pop the top on it?
Well, if there's a Progress there and we have to get rid of it
we have to pack it with things that we no longer need-it's sort
of like a garbage truck at that time-so we'll fill it with things
that we can just send back into the atmosphere to burn up: all
of our trash, our waste products from our toilet, all of these
type of things that we no longer need; packing materials, we'll
put in the Progress. It will undock automatically and it will
move away from us and it will do a deorbit burn and come back
into the atmosphere burning up. If the Soyuz is in the place that
we want the Progress to be, we will have to move the Soyuz, and
that's going to be our case, where we're going to need to move
our Soyuz. Well, we can't move the Soyuz automatically; we have
to be inside it…just in case something went wrong we have
to have our escape vehicle. So we will suit up, get inside the
Soyuz, and then we will actually back the Soyuz out, fly it around,
and re-dock it onto another port, leaving the primary port available
for a Progress to dock. When the Progress is approaching us, it
is an automatic docking system. The Russians do this very well,
and they've done it many, many times very well. We will be watching
it, and Yury will be prepared to take over control of it. We have
a console called a TORU on board the space station, and he'll
be sitting there with controls, just like he is sitting inside
the Progress vehicle, and there's a television camera mounted
on the Progress that's looking at us so if he looks at that screen
it's like he's inside there looking out a window, and he can dock
the vehicle manually should it be necessary to do that. So he'll
be watching, Susan will be assisting him at the TORU, and I'll
be looking out a window, taking handheld laser marks to measure
the distance to make sure that the electronic stuff is corresponding
to the actual stuff. And, as it gets closer, hopefully everything's
going to go very well, it will automatically dock; should there
be a problem and something doesn't look quite right, Yury will
take over manual control, he'll do the docking manually. Then
we check that we have a good pressure seal, we open up the Progress,
and we'll find everything that they've sent up to us, which will
include a lot of things like some fresh fruit and vegetables,
new clothing, food, water. It'll have fuel on board. It's jam-packed-I've
never unloaded one myself but I heard the Expedition One crew's
experience what they wrote about it, and it sounds like it's just
as we expected: very crowded inside but there's a lot of equipment,
materials, food, water, things that we need, as well as a few
goodies…they sneak in a few special things from your friends
and families. Just a little special something to remind you of
home, some cards, nice things like that that are there for your
psychological support.
After you receive your first Progress,
you get your first shuttle visit, and this one brings along a
new component for the station-not a module but the space station's
robot arm, that's built by the Canadian Space Agency. Tell me
about this new component: what is it, how does it work, how is
it going to be employed in assembly and in maintenance of the
station in the future?
Now, we are really looking forward to the station robotic arm
coming up. We call it the SSRMS; it's an acronym that we typically
use. We're looking forward to it coming up because we've been
training for three years to operate this arm. And the 6A crew
is bringing it up, and when Kent Rominger and his crew arrive
they're going to go outside on an EVA while the arm is placed
on to the space station. They're going to hook up things to get
it ready for us to control it to walk it off. It's like an arm,
it's all folded up, it has to be unfolded; and then one end is
moved off, grabbed on, it grabs on to the space station, then
we release the other end and it can move off and grab on to the
space station. So it's kind of like an inchworm way of getting
it off of this cradle that it's in.
Not like the space shuttle's robotic
arm, which is always attached at one end.
That's correct. Well, we will always be attached at one end but
either end can be used.
…not always the same end.
So, we can use whichever one we want. We can walk it from place
to place, should we need to, from one grapple fixture to another
and either end is the same, just one end is permanent, is fixed
while we're moving the other end. And this robotic arm is extremely
important to the construction of the space station-we cannot finish
building the station if this arm doesn't work. And the Canadians
have done a wonderful job of creating an enhanced robotic arm-it
has more capability than [the] shuttle arm, it is easier to use
in many ways, and in some ways it's more complicated to use because
it is a more capable arm. We will be using it for much of the
work that is to be done in future assembly. In fact, on the next
shuttle flight up, where the Airlock is going to be brought up,
we have to use the station arm to move the Airlock and to put
it on board the station. So we've got to get it up there and get
it working.
Now following that shuttle's departure,
you're scheduled for a lot of checkouts on this arm on your own
beyond the work that has to be done to just put it in place. Tell
me what it is that you do? Is there a set of criteria that's got
to be checked off to say, OK, yes, this is operational?
Yes. They've made a large matrix of all of the functions that
the arm can perform, everything it can do. And from that matrix
we've taken a lot of different test items that we will do one
at a time. Some of them will be done while we're walking off the
arm. As I move the arm and bend it around to reach over to where
it's going to grab onto the space station, it's doing a lot of
those functions-not all of them, usually they're quite simple
things at first. Then we'll do a little bit more complicated things,
and during this time when we're no longer docked with the space
shuttle, we'll be doing the more complicated aspects of the robotic
arm operation that we didn't have time to do while we were docked
but we can do after the shuttle leaves. It's a complete test program
to make sure that every part of the arm works, and works well.
At roughly the same, big time frame
that you're [doing] these arm checkouts, you're also due to be
visited by a taxi crew on board a new Soyuz ship. Tell me why
there's a new Soyuz ship coming in the first place, but then,
what it is that you folks will do with this new Soyuz crew during
the time that they'll be sharing the station with you.
Well, the reason that we have to change out the Soyuz-it has a
limited lifetime. It's around six months-it can be a little more
than that-but it's dependent on the fuel that is used during the
last part of the entry into the Earth's atmosphere, and this fuel,
after a while, it starts to decompose, and depending on the heating
of the tanks it can decompose a little bit quicker, but six months
is about the normal amount of time that it can stay on board,
so that's what we plan for. And if we have a nice, cold attitude
it can last a little bit longer. So every six months we will need
to change out the Soyuz. Well, to change it out this time, they
have a Russian crew that's going to come up, dock with the space
station, and then they'll return on the old Soyuz when they go
back. While they're there, they will have some small experiments-I
don't know what they are, but they'll bring some things up with
them to do while they're there-and we'll put them to work: we'll
have things that need to be done, and they'll help us. Because
they're not fully trained on the International Space Station we
won't have them go off and do things by themselves, but they'll
work side by side, they're trained cosmonauts, and they're people
that we know and trust, and so they'll work side by side. If I
have to go and do some type of work or change out some equipment
they can assist us in the work that we're doing.
And, I would guess then that there
must be some similar transfer of equipment inside, the seat liners
that you referred to as well, to accommodate you in the new spacecraft.
Yes. We will have to transfer all three of our seat liners and
the Sokol spacesuits, the suits that we use for launch and entry
in the Soyuz capsule; those will have to be switched over from
one capsule to the other. And that's one of the things that we'll
do immediately after they arrive. We have to be prepared in the
event of an emergency to be able to hop into one or the other
of the Soyuz and leave right away.
The second shuttle visit in the midst
of your increment involves another new piece of hardware for the
station, the Airlock. Tell me about what capability this hardware
adds to the ISS.
The Airlock is what we use for going out to do space walks, and
this particular airlock we call the Joint Airlock, because it
will allow us to use both the United States extravehicular mobility
unit, the EMU, or the Russian Orlan spacesuits so either suit
can be used to go outside through this airlock. Before this, we
could only do EVAs in the Russian suits from one of the other
modules, which could be either the Docking Compartment after it
arrives, or from what's called the ?xO, the transfer compartment
on the Service Module. The problem with using the transfer compartment
is, if there was a problem with the hatch coming back inside and
we could not re-pressurize it the way we would want to do, then
we have to go back further into the Service Module and we lose
the ability to go from one part of the station to the other, so
there's a little bit of added risk by using that particular compartment.
The Docking Compartment, the Russian module that will be like
an airlock, can only handle the Russian Orlan suits. So we get
a great additional capability by having the Airlock. And one other
feature is we save air by using the Airlock. It has a pump, actually
provided by the Russians that will allow us to pump air from the
compartment we're going to go to vacuum in; we pump that air back
into the space station so we don't lose it overboard. Every other
airlock that we've used has just evacuated the air in the compartment
out into space when you're getting ready to go outside, so we've
always wasted some air. Well, now we save, oh, half to two-thirds
of the air by pumping it back inside before we have to vent just
a little bit out in space.
The installation of this new component,
the Airlock, is going to give the station's new mechanical arm
a tryout as it's put to use in coordination with space walks by
space shuttle crewmembers. Can you talk us through the sequence
here-what all happens to get that airlock out of the shuttle payload
bay and into place on the station?
Yes, this will be a true test of the new arm. We will do a small,
what we call loaded operation-that's having something on the end
of it, something massive on the end of the arm to move-when we
move the cradle that it was on off of the space station back,
and give it back to the shuttle crew on 6A. But that's not a very
heavy mass; the Airlock is much, much larger; it's much more massive,
and we've got to move it with a great deal of precision while
lifting it out of the payload bay of the space shuttle. There's
very little clearance-I believe it's less than two inches on each
side-so it has to be very precise in its motions, lifting this
large mass out of the payload bay, then maneuvering it around,
and putting it onto the space station. Another difficult aspect
of this is that we don't have any good visual cues for doing this.
We have to use a system that's called the Space Vision System
or the artificial vision system, that uses all these little polka
dots you see on the space station. It uses cameras to look at
those and through electronic means it resolves exactly where the
arm and where its payload is in space, and it allows you to move
it very, very precisely-to the tenths of an inch- precision to
where you want it to be. And it does all this electronically;
it's like magic. And when it works, it works very, very well.
Now we need good lighting for it to work, so this becomes an extremely
difficult task if we don't have good lighting to do it. And we
think we've got to have the artificial vision unit working in
order for Susan Helms to mate the Airlock to the space station
and then for us to get it bolted down.
And, that's part of the work that
the space walkers from the shuttle will do…
No, we will…
…the bolting?
…no, the bolting is done from inside; I'll actually control
that through our computers. [We'll] tell it to start the bolting,
and it goes through a fairly complicated sequence of bolting down
certain bolts, then other ones-it's like when you put on your
tire you'll torque down one of them a little bit, then you'll
use a crossing pattern; it does the same sort of thing with these
sixteen very large bolts that will hold the Airlock in place.
And the space walkers will have configured some things outside
to get it ready to accept the Airlock, and then after it's installed
they'll connect up some connectors on the outside so that we have
heater power to keep it alive. Another problem is, we've got to
get it connected up before a long time so that the Airlock doesn't
get too cold and its components become damaged because of the
cold.
The large structure of the Airlock
is, I understand, only part of the payload; there are other tanks
that have to be put in place as well?
That's right. We have high-pressure oxygen and nitrogen tanks
that are installed separately, and they go on the outside of the
Airlock. It would've made the Airlock far too big to be in the
payload bay if they were installed on launch, so they have to
come up separately. And, we will pick up each of those, bring
them up to very close proximity to the Airlock, and then the extravehicular
activity crew-which will be Mike Gernhardt and Jim Reilly in this
case, from the 7A crew-they will be there to receive the tanks.
So, we'll move them into position close by, and then they will
grab them and manually put them into place and lock them down,
and then they'll make the connections of the oxygen and nitrogen
lines so that we'll then have oxygen and nitrogen that come into
the Airlock and that we can use both in the Airlock and in the
space station as well. That's our source of oxygen and nitrogen
on the Airlock that we'll use for experiments, we'll use for providing
oxygen if we need it inside the station, and we'll use it for
servicing our spacesuits.
After the installation of the Airlock,
you've got roughly a month left in your time on board the station.
Tell me about what things are planned to happen during that time,
including the arrival of the Docking Compartment module that you
referred to a few moments ago.
Yes. Right now we have an extravehicular activity that we may
or may not do out of the new airlock; that's based on, it will
be based on whether or not there's work to be done. Right now,
there's not enough to warrant doing the space walk, but if we
continue to have extra tasks that pile up, then we'll do one of
those. If not, we'll wait on the Docking Compartment to arrive,
sometime around the first of June of next year. This is a Russian
module that will be used for docking other modules onto, or for
using as an airlock-it has two extra hatches for going outside,
and it will have a lot of equipment inside it. We're going to
remove some of that equipment; the rest of it goes outside, including
one of the large Russian manipulator arms, called the Strela.
It's one I'm very familiar with because, on STS-101, we moved
a Strela to a new location on the space station. We assembled
it and then in the payload bay, and then we moved it to another
location. Yury and I will do a space walk not long after the Docking
Compartment is in place, and we will do it from the Docking Compartment.
And, we'll open the hatches, we'll take all this equipment out,
the Strela and some other apparatus that we're going to put on
the outside, and we'll install it; we also have some cables to
hook up so that we'll have communications from outside using the
Orlan suits. And when that EVA is complete, we will do a second
one that will involve Yury and Susan, and they will go out and
connect up a lot of cables that they have to remove from one place
on the station and connect up to the Docking Compartment so that
it will become fully operational and be able to dock other vehicles
onto the end of it. So, we'll have two EVAs there, and there are
a couple more that will be done later on but we believe they're
going to be in the third or fourth increment now.
The fourth shuttle of your whole experience
on this mission is going to arrive that summer and will carry
your replacements, the Expedition 3 crew. By the time that happens
and you're ready to go home, what in your mind will have had to
have been accomplished for you to consider your mission a success?
Well, I know what I would like to have happened: I'd like for
us to transfer everything over that we need to make the Laboratory
fully functional; to have the robotic arm come up on 6A and have
it operate successfully; to bring the Airlock up, install it successfully;
and to complete the EVAs that we need to do to outfit the rest
of the station, including the Docking Compartment. We've also
got to have a Soyuz change-out or we won't be able to stay. And,
I think if all those things happen, I'll consider it completely
successful. But, you know, if any one or two or three of those
things don't happen, the space program will find a way to accomplish
the mission in the long run. Sometimes we can't control everything
that happens. There are mechanical, material, and, once in a while,
human failures that cause us to not accomplish the mission at
that time, but we will always find a way to work around that and,
in the long run get to where we need to be and that is, getting
our space station fully assembled and operating.
With the installation of the Airlock
that we discussed a few moments ago, you and Yury and Susan will
be the crew on duty at the time that the second phase of the International
Space Station Program officially comes to an end and the third
phase, the start of research, actually begins. So, finally, if
I could get you to talk a little bit about the science that's
going to be done on board ISS in the future: tell me how you see
it contributing to, not only to life on Earth, but also to future
exploration.
You know, we never know exactly what we're going to learn through
research. Oftentimes different things come out of the basic research
that we're doing, and space is such a unique place to do work
in a laboratory, we just don't know the wonderful things that
we'll discover while we're doing experiments out there. I don't
think I could tell you that, ten years from now, we're going to
have a result from these experiments that's going to cure cancer
or to solve the problems with pollution; but I know that the research
that we're doing will make us take steps forward that eventually
will help us to solve many of the problems that we face here on
the Earth. If you look back at the shuttle program, a lot of the
time we were doing experiments, we didn't really know where they
were going; we knew that we were just able to use this laboratory
we had for short periods of time, and a lot of really good science
discoveries came out of that time frame. I think we can only imagine
what will happen on board the International Space Station as we
continue to do research and explore. And, for the future? Who
knows? It's going to help us to reach out; this is going to be
the start of the continuation of human beings going out into space.
I think that we will probably never have a time in our future
where we don't have humans in space after this: we're going to
man the International Space Station for many years; I hope that
we will soon be going back to the moon, and then after that we'll
be going to Mars. And I hope to see the generation that are growing
up with my daughter and future generations to see us really reaching
out and exploring.
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