Why doesn't the plane configure a big parachute, can be moment of plane out of control opened make

This is a computation problem.

Boeing 747 it is 370 tons probably according to computation of the greatest takeoff weight. So want divide evenly fast drop, need parachute is bearing 370 tons weight. Computational process slightly, developed area of computational eventuate parachute needs to be 340 thousand square metre at least, probably 500 mus of ground, namely parachute radius 330 meters.

Liaoning date aircraft carrier is full-length just many meters 300, parachute secures than Liaoning date, circle a circle to had swept the ground to accumulate even big circuit.

Can make without what material so so big a parachute, although can, deposit and spreading out also is a problem. We spread out the parachute of such dimensions in cruise speed according to the plane, so computation can get parachute extremely cable and link place need bear equivalent 28900 tons of instantaneous are tensile. Even if 100 cord bear every even nearly 300 tons pulling force. This basically impossible, where don't also have to be able to be secured.

So to plane of large civil aviaton, such integral parachute is highbrow. Not as small-sized as research and development modular cabin parachute, such difficulty can be reduced greatly. And small-sized and civil aircraft had applied parachute.

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