Discussion
Rear-fuselage engine mounting is chosen mainly for
Answer: B
Correct answer: A small engine-out yawing moment
A rear-fuselage engine sits close to the aircraft's centreline - typically two or three metres rather than the seven or more of a wing pod - so the yawing moment when it fails is far smaller.
The consequence is a smaller fin and rudder, a lower minimum control speed and a shorter takeoff run. The penalties are real too: an aft centre of gravity, a heavier rear fuselage to carry the loads, and no wing bending relief. Cabin noise is actually worse at the rear, and the pylon is short only incidentally.
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