Patent ID: 9703293
Date: 2017-07-11
CPC Classifications: B64C,B64D,G05D

Claim:
1. A method of controlling an aircraft at high angles of attack, the method comprising: measuring an actual angle of attack (α) for an aircraft; calculating a short term alpha (α1); calculating a long term alpha (α2); calculating an activation alpha (α3); determining if the actual angle of attack (α) is greater than α3; limiting the actual angle of attack (α) to the short term alpha (α1) by activating at least one of an elevator, a stabilizer, a thrust lever, and a spoiler; evaluating if a predetermined criteria has been met; and limiting the actual angle of attack (α) to the long term alpha (α2), by activating at least one of an elevator, a stabilizer, a thrust lever, and a spoiler, if the predetermined criteria have been met.