wing drop

wing drop

[′wiŋ ‚dräp]
(aerospace engineering)
A phenomenon experienced by an air vehicle during maneuvers at moderate to high angles of attack, in which an abrupt reduction of lift from one side of the vehicle prior to the other side creates a rolling moment, which causes loss of control of the airplane's roll attitude.

wing drop

A tendency of an aircraft to roll to one of its sides (wind dropping to that side) when the aircraft approaches the stalling angle. This should not be confused with the term wing heavy, which is the tendency of a wing to drop at normal operating speeds.
References in periodicals archive ?
The aircraft experienced a sharp right wing drop, followed by a hard swerve to the right.
Lockheed Martin is developing a spoiler for F-35C Joint Strike Fighter flight test aircraft to counter potential wing drop in transonic turns.
That means the pressure of the fast-moving air above the wing drops while the pressure beloe remains higher.