Emergency flight planning for the generalized transport model aircraft with left wing damage |
Posted on:2007-08-09 | Degree:M.S | Type:Thesis |
University:University of Maryland, College Park | Candidate:Tang, Yunshen | Full Text:PDF |
GTID:2442390005471800 | Subject:Engineering |
Abstract/Summary: | |
A nontrivial fraction of aviation accidents are caused by in-flight damage or failures that reduce performance. Researchers are working to ensure future avionics recognize the impact of damage/failures and guide the aircraft to a safe landing. This thesis presents an end-to-end Adaptive Flight Planner (AFP) for such emergencies and applies it to a damage situation in which a Generalized Transport Model (GTM) aircraft loses a significant fraction of its left wingtip. Trimmed (non-accelerating) flight conditions define the post-damage/failure aircraft flight envelope. A landing site search algorithm is augmented to define the reachable landing footprint and to prioritize the feasible landing runways within this region. End-to-end landing trajectories are constructed as a sequence of trim states and corresponding transitions. An LQR-based PID nonlinear controller enables the damaged GTM aircraft to correctly track trajectory commands over trimmed flight and transition segments. A suite of emergency scenarios are used to evaluate AFP performance. |
Keywords/Search Tags: | Flight, Aircraft |
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