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Simulation development of a forward sensor-enhanced low-altitude guidance systemThe requirement to operate aircraft at low-altitude near the terrain is common in the military community and essential for helicopters. The risk and crew workload in this flight regime is severe, with navigation, guidance, and obstacle avoidance demanding high attention. A guidance system relying on digitized terrain elevation maps has been developed that employs airborne navigation, mission requirements, aircraft performance limits, and radar altimeter returns to generate a valley-seeking, low-altitude trajectory between waypoints for display to the pilot. This system has been flight demonstrated to 150 ft above ground level altitude, and is primarily limited by the ability of the pilot to perform obstacle detection and avoidance. In this study, a wide field of view forward sensor has been modeled and incorporated in the guidance system for the purpose of relieving the pilot of the obstacle avoidance duty. The results of a piloted, motion-based simulation of this enhanced low-altitude guidance system is presented. Simulated flights to 50 ft altitude in the presence of obstacles were demonstrated while maintaining situational awareness and close tracking of the guidance trajectory.
Document ID
19950028571
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Zelenka, Richard E.
(NASA Ames Research Center Moffett Field, CA, United States)
Swenson, Harry N.
(NASA Ames Research Center Moffett Field, CA, United States)
Dearing, Munro G.
(NASA Ames Research Center Moffett Field, CA, United States)
Hardy, Gordon H.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 16, 2013
Publication Date
October 25, 1993
Subject Category
Aircraft Stability And Control
Accession Number
95A60170
Distribution Limits
Public
Copyright
Other

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