Discussion
Assertion (A): Rear-mounted engines require a T-tail.
Reason (R): Engines on the rear fuselage leave the conventional tailplane position in their efflux and wake.
Select the correct answer from the options below.
Answer: C
Correct answer: Both A and R are true, and R is the correct explanation of A
Both statements are true and the second explains the first. Engines on the rear fuselage occupy the space where a conventional tailplane root would sit, and their efflux and wake pass through it.
Mounting the tailplane on top of the fin lifts it clear of both. The arrangement brings its own difficulty - a T-tail can be blanketed by the wing wake at high angle of attack, giving a deep stall from which recovery may be impossible - which is why such aircraft carry stick pushers.
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