A GNSS Literature Review and a Navigation System for Future Space Vehicles

2003 ◽  
pp. 45-52
Author(s):  
Keyword(s):  
Literature Review ◽  
Navigation System ◽  
Space Vehicles ◽  
Future Space

Current Status of Flight Evaluation of DGPS-INS Hybrid Navigation System at NAL

1994 ◽  
Vol 47 (3) ◽  
pp. 338-348
Author(s):  
H. Shingu ◽  
M. Murata ◽  
T. Ono ◽  
K. Ishikawa
Keyword(s):  
Kalman Filter ◽  
Measurement System ◽  
Navigation System ◽  
Design Concept ◽  
Experimental Results ◽  
Current Status ◽  
Space Vehicles ◽  
Future Plan ◽  
Future Space ◽  
Navigation Errors

This paper presents a summary of the flight evaluation of the DGPS-INS hybrid navigation system conducted at the National Aerospace Laboratory (NAL). First, the configuration of the flight experiments, including ground facilities, the measurement system, etc. is described. Secondly, the design concept for a method of estimating navigation errors using a Kalman filter is presented. Thirdly, flight profiles employed in the experiments are defined, and the experimental results of GPS, DGPS, INS, in both stand-alone and hybrid modes are shown corresponding to each profile, and the improvement of navigation performance by the introduction of the DGPS-INS hybrid navigation system is experimentally verified. Fourthly, the future plan for research on the DGPS-INS hybrid navigation system at NAL is briefly explained. Finally, it is concluded that the design concept of the DGPS-INS hybrid navigation system available for future space vehicles has been successfully completed.

445N (100-lbf) LO2/LCH4 reaction control engine technology development for future space vehicles

2010 ◽  
Vol 66 (5-6) ◽  
pp. 836-843 ◽  
Author(s):  
Philip J. Robinson ◽  
Eric M. Veith ◽  
Eric A. Hurlbert ◽  
Rafael Jimenez ◽  
Timothy D. Smith
Keyword(s):  
Technology Development ◽  
Space Vehicles ◽  
Future Space

Integrating Microgravity Test Data with a Human Computer Reach Model

1992 ◽  
Vol 36 (16) ◽  
pp. 1249-1253
Author(s):  
Mihriban Whitmore ◽  
Ann M. Aldridge ◽  
Randy B. Morris ◽  
Abhilash K. Pandya ◽  
Robert P. Wilmington ◽  
...  
Keyword(s):  
Space Station ◽  
Three Dimensional ◽  
Microgravity Environment ◽  
Space Vehicles ◽  
Interactive Graphics ◽  
Workstation Design ◽  
Future Space ◽  
Wide Range ◽  
Series Of Experiments ◽  
Extract Information

Future space vehicles such as the Space Station Freedom will be equipped with computers that have direct manipulation capabilities. The human factors challenge is to provide an optimal human-systems interface which will accommodate a wide range of users and tasks in a microgravity environment. A series of experiments have been conducted by the Man-Systems Division at Johnson Space Center to resolve anthropometric issues related to human reach capabilities and limitations impacting workstation design. To facilitate this goal, two approaches, “Performance-based” and “Model-based” analyses, were integrated to investigate the human reach mapped onto the workstation display panels. Microgravity maximum reach sweep data were collected onboard NASA's KC-135 Reduced Gravity Aircraft. A three-dimensional (3-D) interactive graphics system, PLAID, was used to generate anthropometrically correct human computer models. Video tapes recorded during the flights were used to extract information for positioning each human representation in the computer model relative to the workstation. The approach, findings and implications of the evaluations are discussed in the paper.

IVHM (Integrated Vehicle Health Management) techniques for future space vehicles

2001 ◽  
Author(s):  
E. Baroth ◽  
W. Powers ◽  
J. Fox ◽  
B. Prosser ◽  
J. Pallix ◽  
...  
Keyword(s):  
Health Management ◽  
Space Vehicles ◽  
Future Space ◽  
Management Techniques
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