Presentation
Airplane Flight Envelopes
FAA Safety Seminar/Webinar, GL15129175, May 18, 2024
(2024)
Abstract
Operational flight envelopes define limits of altitudes and airspeeds in which a FAR 23 or 25 airplane operate safely. The issues associated with flight envelopes are flight loads, structural integrity, stability, control, and performance. Maneuvering (v-n), gust (v-g), and combined flight load envelopes will be discussed for FAA certified airplanes. Flight (limit) and ultimate loads define operational and ultimate envelopes. Phenomena such as low- and high-speed buffet, coffin-corner, flutter, buffeting, vibrations, divergence, control reversal, etc., will be discussed. FAR 25 airplanes flying at high altitudes and high Mach numbers experience dramatic changes in aerodynamic behavior often requiring stability augmentation and envelope protection systems.
Keywords
- Flight Envelope,
- maneuvering envelope,
- gust envelope,
- combined envelope
Disciplines
Publication Date
Spring May 18, 2024
Comments
Master Level 2 - 1 credit FAA webinar
Citation Information
Nihad E Daidzic. "Airplane Flight Envelopes" FAA Safety Seminar/Webinar, GL15129175, May 18, 2024 (2024) Available at: http://works.bepress.com/nihad-daidzic/137/
Creative Commons License
This work is licensed under a Creative Commons CC_BY-NC-ND International License.