Venkataraman, Raghu2018-06-262018-06-262017-08-23https://hdl.handle.net/11299/198015VIREO / Day11 / Flight21. TEST: Closed-loop control law validation. RESULT: Good flight for control law validation. EVENTS: 1. This flight used the TECS controller (same as Flight18). 2. Turned off all longitudinal control loops except total energy to throttle. Elevator was held fixed at -5 deg TE up. 3. The TECS controller managed airspeed and altitude well despite the stuck elevator. 4. We completed step commands in altitude and airspeed. 5. We completed the autoland.VireoFlight 21UMoreReliabilityFlight ControlLTDDataset