Conceptual Question 4.11 Normally, jet engines push air out the ba…
Conceptual Question 4.11 Normally, jet engines push air out the back of the engine, resulting in forward thrust, but commercial aircraft often have thrust reversers that can change the direction of the ejected air, sending it forward.
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Technifi Expert’s Answer:
Second option is correct.
First option is about thrust vectoring which is different to thrust reversal.
Thrust vectoring: Whole engine is titled to make a thrust point in downward direction. In thrust vectoring whole engine is tilted to make thrust point in downward direction.
Second Option is the right reason for the use of thrust reversal.
Thrust Reversal is used to slow the speeds which might reduce the runaway length during landing or to slow the speed of plane in general.
Third Option is also incorrect as the backward thrust will reduce the the acceleration.
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