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May 2006 Navigation John Sonntag EG&G Technical Services, Inc. 10 October 2006

May 2006 Navigation John Sonntag EG&G Technical Services, Inc. 10 October 2006. Navigation Techniques. Two navigation tools available Soxmap Used for May 2006 GISMO Standard Twin Otter tool Visual aid for flight crew Best for following curved path Course Deviation Indicator (CDI)

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May 2006 Navigation John Sonntag EG&G Technical Services, Inc. 10 October 2006

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  1. May 2006 Navigation John Sonntag EG&G Technical Services, Inc. 10 October 2006

  2. Navigation Techniques • Two navigation tools available • Soxmap • Used for May 2006 GISMO • Standard Twin Otter tool • Visual aid for flight crew • Best for following curved path • Course Deviation Indicator (CDI) • Will be used for 2007 GISMO • Can couple to aircraft steering • Good repeatability for long straight lines

  3. 23 May 2006 Mission Plan • Flight plan was out-and-back • Thule to Camp Century, then southeast along 18 May 1999 ATM/KU flight track • Inbound leg offset 25 m to south of outbound • Constant 10,000' pressure altitude

  4. 23 May 2006 Steering ErrorOutbound from Thule

  5. 23 May 2006 Steering ErrorInbound to Thule

  6. 24 March 2006P-3 Steering Error with CDI

  7. Lessons Learned from May 2006 • 2006 GISMO flight used Soxmap / Twin Otter combination • Configuration more suitable for outlet glacier work • Steering within +/-50m, could be better • 2007 GISMO flights will use CDI with P-3 • Better repeatability for straight flight lines • Soxmap backup • More info: atm.wff.nasa.gov; click “Aircraft Navigation”

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