| Popis: |
This paper presents a total flight envelope method to assess aircraft stability and control qualities suitable for inclusion at the conceptual design phase. Total flight envelope screening ensures that a vehicle is trimmable, stable and controllable over a wide range of flight conditions, from lowspeed low-altitude flight through high-speed low-altitude flight to high-speed cruise flight. The presented methods help identify both forward and aft center of gravity limits necessary to ensure low risk flight. The analysis was performed on three aircraft chosen foe there very different purposes and flight profiles. The aircrafts chosen were a Cessna 150, Boeing 737-300, and a Lockheed F-117. The analysis consisted of looking at the open loop handling characteristics from looking at the Short Period and Dutch Roll frequencies, MIL STD-8785C and Bihrle-Weissman handling qualities, and minimum trimmable control speeds. The analysis showed many similarities, as well as many differences based on how these aircrafts performed. |
