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What solutions are there against deep stalls?

According to SKYbrary:

Aircraft with a T-tail design are often configured with a Stick Pusher system to help prevent the mainplane angle of attack from reaching a value that could result in a Deep Stall.

Are there other solutions?

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2 Answers 2

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The Airbus A400M military transport was equipped with a rocket engine pointing downward which could produce a 5-second burn during testing of deep stall characteristics. It isn’t standard equipment though.

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(Source: YouTube, composite of two frames)

I came across this interesting, probably unique, solution:

With the heavier engines on the MD-90 compared to the MD-80, MDC added flaps on the engine pylons that activate (deflect 30°) to assist in recovering from deep stalls.

The first warning of stall onset comes from the stick-shaker, followed by a red light and aural/vocal warning, and the stall is finally corrected by a stick-pusher. The nacelle strakes and large engine pylon assist natural pitch- down at the stall. The pylon trailing edge also deflects 30° down when the control column is pushed fully forwards: this deflection takes about 2s (Flight, 1994).

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