Project Title:

A TRIPLE-USE MICROSPACECRAFT SUBSYSTEM FOR OUTER PLANETARY MISSIONS, LTP-546

94-1	09.12	0771		

A TRIPLE-USE MICROSPACECRAFT SUBSYSTEM FOR OUTER PLANETARY 
MISSIONS, LTP-546

Abstract:

Microspacecraft Technology is faced with a serious problem: The 
removal from service of the plutonium fueled Radio-isotope Thermal 
Generators (RTGs). This will make the envisaged long-term outer 
planetary missions extremely difficult, if not impossible, unless 
new, cost-effective technologies can provide alternative solutions. 
We propose to prove the feasibility of an Inflatable, or 
Inflatable-rigidizable Solar Concentrator/ Antenna (ISCA) as a 
triple-use spacecraft subsystem. This Concentrator will be of the 
same type as the l4 meter aperture reflector that is currently 
under construction at L'Garde and which is to be flown in 1996 from 
the Shuttle. The proof of feasibility proposed here will show that 
such a triple-use concentrator is (1) compatible with the mass, 
volume, power and data transfer rate constraints of a 
microspacecraft; and (2) that it can provide electric and thermal 
power to the spacecraft, as well as being the primary 
telecommunications instrument at a reduced power consumption, in 
outer-planetary space.

The primary commercial market is all the spacecraft manufacturers 
that will need the low-cost alternative to Radio-isotope Thermal 
Generators (RTGs). Non-aerospace uses include inexpensive and 
portable (back-pack type) systems for military and other users to 
provide solar thermal and solar electric power, as well as 
telecommunications capabilities in not easily accessible, remote 
areas.

Key Words

L'Garde
15181 Woodlawn Avenue
Tustin, CA 91680-6487