may 2006 navigation john sonntag eg&g technical services, inc. 10 october 2006
TRANSCRIPT
May 2006 Navigation
John SonntagEG&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)
Will be used for 2007 GISMO
Can couple to aircraft steering
Good repeatability for long straight lines
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
23 May 2006 Steering ErrorOutbound from Thule
23 May 2006 Steering ErrorInbound to Thule
24 March 2006P-3 Steering Error with CDI
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”