Performance of Flash Lidar with Real-time Image Enhancement Algorithm for Landing Hazard Avoidance
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Hazard Detection↗
Engineering topics
Brandon P Smith
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Guidance Performance of Bank-Angle and Alpha-Beta Steering for A Large Robotic Mars Entry Vehicle
Entry performance using Apollo-based entry guidance is assessed with a future entry system for a large robotic payload. Both a traditional bank-angle steering system and an innovative alpha-beta steering concept are considered to compare flight performance. Results indicate alpha-beta steering provides an order of magnitude improvement in crossrange error and mean altitudes up to 1 km higher than bank-angle steering. Results also show alpha-beta steering provides downrange errors with a spread half of that of bank-angle steering. Lastly, alpha-beta steering is found to provide a narrower spread of terminal altitude, Mach number, and dynamic pressure, indicating safer parachute deploy conditions.
Daniel L Engel↗