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Post-Flight Analysis of the Guidance, Navigation, and Control Performance During Orion Exploration Flight Test 1The first test flight of the Orion Multi-Purpose Crew Vehicle presented additional challenges for guidance, navigation and control as compared to a typical re-entry from the International Space Station or other Low Earth Orbit. An elevated re-entry velocity and steeper flight path angle were chosen to achieve aero-thermal flight test objectives. New IMU's, a GPS receiver, and baro altimeters were flight qualified to provide the redundant navigation needed for human space flight. The guidance and control systems must manage the vehicle lift vector in order to deliver the vehicle to a precision, coastal, water landing, while operating within aerodynamic load, reaction control system, and propellant constraints. Extensive pre-flight six degree-of-freedom analysis was performed that showed mission success for the nominal mission as well as in the presence of sensor and effector failures. Post-flight reconstruction analysis of the test flight is presented in this paper to show whether that all performance metrics were met and establish how well the pre-flight analysis predicted the in-flight performance.
Document ID
20150001919
Document Type
Conference Paper
Authors
Barth, Andrew (Lockheed Martin Corp. Houston, TX, United States)
Mamich, Harvey (Lockheed Martin Corp. Littleton, CO, United States)
Hoelscher, Brian (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
February 23, 2015
Publication Date
January 30, 2015
Subject Category
Spacecraft Design, Testing and Performance
Engineering (General)
Report/Patent Number
JSC-CN-32764
AAS 15-134
Meeting Information
American Astronautical Society GN&C Conference(Breckenridge, CO)
Distribution Limits
Public
Copyright
Public Use Permitted.

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