Space Integrated GPS/INS

Space Integrated GPS/INS (SIGI) is a strapdown Inertial Navigation Unit (INU) developed and built by Honeywell International to control and stabilize spacecraft during missions. It has integrated global positioning/inertial navigation to provide three navigation solutions: Pure inertial, GPS-only and blended GPS/INS. SIGI have been employed on the International Space Station,^[1] the Japanese H-II Transfer Vehicle (HTV)^[2] the Boeing X-37^[3] and X-40.

SIGI is also proposed as the primary navigation system for Orion, which is scheduled to replace the Space Shuttle.

References

↑ "Lessons Leamed from Two Years of On-Orbit Global Positioning System Experience on International Space Station" (PDF). PDF. NASA Johnson Space Center. Retrieved 2006-09-27.
↑ "H-IIA Transfer Vehicle". Web Site. Japan Aerospace Exploration Agency (JAXA). Archived from the original on September 28, 2006. Retrieved 2006-10-01.
↑ "Independent Assessment of X-37 Safety & Mission Assurance Processes and Design Features" (PDF). PDF. NASA Headquarters Office of Safety & Mission Assurance. Retrieved 2006-09-27.

Flight instruments

Pitot-static	Altimeter Airspeed indicator Machmeter Variometer

Gyroscopic	Attitude indicator Heading indicator Horizontal situation indicator Turn and slip indicator Turn coordinator Turn indicator

Navigational	Course deviation indicator Horizontal situation indicator Inertial navigation system Magnetic compass Satellite navigation SIGI

Related topics	Air data inertial reference unit EFIS Glass cockpit Primary flight display V speeds Yaw string

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