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There are a total of 515904 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Flight Results of the NF-15B Intelligent Flight Control System (IFCS) Aircraft with Adaptation to a Longitudinally Destabilized Plant
Author(s): Bosworth, John T.
Abstract: Adaptive flight control systems have the potential to be resilient to extreme changes in airplane behavior. Extreme changes could be a result of a system failure or of damage to the airplane. The goal for the adaptive system ...
NASA Center: Dryden Flight Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034509
GRACE Gravity Data Constrain Ancient Ice Geometries and Continental Dynamics over Laurentia
Author(s): Tamisiea, M. E.; Mitrovica, J. X.; Davis, J. L.
Abstract: The free-air gravity trend over Canada, derived from the Gravity Recovery and Climate Experiment (GRACE) satellite mission, robustly isolates the gravity signal associated with glacial isostatic adjustment (GIA) from the ...
NASA Center: Goddard Space Flight Center
Publication Year: 2007
Added to NTRS: 2008-09-11
Document ID: 20080034472
Chromated Material Obsolescence
Author(s): Segars, Matt G.
Abstract: This viewgraph presentation describes the obsolescence of chrome and cadmium papers. The supplier obsolescence of the Randolph TT-P-1757 zinc chromate primer and continental coatings zinc chromate paste is also presented.
NASA Center: Marshall Space Flight Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034512
Annoyance judgements of aircraft with and without acoustically treated nacelles
Author(s): Borsky, P. N.; Leonard, S.
Abstract: A series of subjective response laboratory tests were conducted to determine the effectiveness of reducing aircraft noise by treating the aircraft engine nacelles with acoustically absorbent material. A total of 108 subjects ...
NASA Center: NASA (non Center Specific)
Publication Year: 1973
Added to NTRS: 2008-09-11
Accession Number: 73N30941; Document ID: 19730022209; Report Number: NASA-CR-2261
Practical Application of a Subscale Transport Aircraft for Flight Research in Control Upset and Failure Conditions
Author(s): Cunningham, Kevin; Foster, John V.; Morelli, Eugene A.; Murch, Austin M.
Abstract: Over the past decade, the goal of reducing the fatal accident rate of large transport aircraft has resulted in research aimed at the problem of aircraft loss-of-control. Starting in 1999, the NASA Aviation Safety Program ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034480
The X-43 Fin Actuation System Problem - Reliability in Shades of Gray
Author(s): Peebles, Curtis
Abstract: Following the loss of the first X-43 during launch, the mishap investigation board indicated the Fin Actuator System (FAS) needed to have a larger torque margin. To supply this added torque, a second actuator was added. The ...
NASA Center: Dryden Flight Research Center
Publication Year: 2006
Added to NTRS: 2008-09-11
Document ID: 20060047742
The Role of Trust and Interaction in Global Positioning System Related Accidents
Author(s): Johnson, Chris W.; Shea, Christine; Holloway, C. Michael
Abstract: The Global Positioning System (GPS) uses a network of satellites to calculate the position of a receiver over time. This technology has revolutionized a wide range of safety-critical industries and leisure applications. ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034491
In-Flight Stability Analysis of the X-48B Aircraft
Author(s): Regan, Christopher D.
Abstract: This report presents the system description, methods, and sample results of the in-flight stability analysis for the X-48B, Blended Wing Body Low-Speed Vehicle. The X-48B vehicle is a dynamically scaled, remotely piloted ...
NASA Center: Dryden Flight Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034515
Verification of a Constraint Force Equation Methodology for Modeling Multi-Body Stage Separation
Author(s): Tarabini, Paul V.; Roithmayr, Carlos; Toniolo, Matthew D.; Karlgaard, Christopher; Pamadi, Bandu N.
Abstract: This paper discusses the verification of the Constraint Force Equation (CFE) methodology and its implementation in the Program to Optimize Simulated Trajectories II (POST2) for multibody separation problems using three ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034488
Multibody Modeling and Simulation for the Mars Phoenix Lander Entry, Descent and Landing
Author(s): Queen, Eric M.; Prince, Jill L.; Desai, Prasun N.
Abstract: A multi-body flight simulation for the Phoenix Mars Lander has been developed that includes high fidelity six degree-of-freedom rigid-body models for the parachute and lander system. The simulation provides attitude and rate ...
NASA Center: Langley Research Center
Publication Year: 2008
Added to NTRS: 2008-09-11
Document ID: 20080034477
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