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Operational Use of GPS Navigation for Space Shuttle EntryThe STS-118 flight of the Space Shuttle Endeavour was the first shuttle mission flown with three Global Positioning System (GPS) receivers in place of the three legacy Tactical Air Navigation (TACAN) units. This marked the conclusion of a 15 year effort involving procurement, missionization, integration, and flight testing of a GPS receiver and a parallel effort to formulate and implement shuttle computer software changes to support GPS. The use of GPS data from a single receiver in parallel with TACAN during entry was successfully demonstrated by the orbiters Discovery and Atlantis during four shuttle missions in 2006 and 2007. This provided the confidence needed before flying the first all GPS, no TACAN flight with Endeavour. A significant number of lessons were learned concerning the integration of a software intensive navigation unit into a legacy avionics system. These lessons have been taken into consideration during vehicle design by other flight programs, including the vehicle that will replace the Space Shuttle, Orion.
Document ID
20080014095
Acquisition Source
Johnson Space Center
Document Type
Preprint (Draft being sent to journal)
Authors
Goodman, John L. (United Space Alliance Houston, TX, United States)
Propst, Carolyn A. (United Space Alliance Houston, TX, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2008
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Meeting Information
Meeting: IEEE/ION PLANS Conference
Location: Monterey, CA
Country: United States
Start Date: May 5, 2008
End Date: May 8, 2008
Sponsors: Institute of Electrical and Electronics Engineers
Funding Number(s)
CONTRACT_GRANT: NNJ06VA01C
Distribution Limits
Public
Copyright
Public Use Permitted.

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