deep stall

deep stall

A condition associated with the T-tail configuration, in which there is a rapid increase in the angle of attack to an extent that the horizontal tail is unable to provide sufficient longitudinal control. Also called a locked-in stall.
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1 configuration by providing simplified launch, deep stall landing, all- environment capability, longer endurance, updated sensor payloads and operation using Lockheed Martin's mobile ground control system.
Recovery involves a deep stall maneuver, landing on a small inflatable cushion.
This action recovered the aircraft from the deep stall.
In fact, almost no other aerodynamic system operates in deep stall.
Post-crash investigation concluded the prototype 1-11 had experienced an unrecoverable deep stall in which the wake of the stalled wing covered the high-mounted horizontal stabilizer, thus blanking the elevator controls and preventing normal recovery techniques.
This is known as a "locked-in deep stall," and it's a sure-fire way to ruin a pilot's day.
Whereas the Pointer makes a soft horizontal landing (facilitated by having the propeller in a pusher arrangement behind the high-set wing), the Raven is recovered by inducing a deep stall, leading to a vertical landing.
A deep stall recovery allows the drone to be retrieved accurately, which is vital in special operations.
Upon landing the Pointer performs a deep stall and falls vertically, retaining its equilibrium to the land softly.
It has extra deep stalls, built-in muzzle blast barriers, integrated lighting and floor-to-ceiling walls to provide shooters with a comfortable atmosphere.
Key to understanding stalls, of course, is knowing why and how they occur, why we practice them and how we can use the knowledge and experience gained during that practice to prevent more dramatic behavior, like deep stalls or spins, especially when close to the ground.

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