An advantage of locating the engines at the rear of the fuselage rather than beneath the wing is

Prepare for the EASA Principles of Flight Test. Learn with detailed explanations for each topic covered in the syllabus. Boost your confidence and ace your exam!

Multiple Choice

An advantage of locating the engines at the rear of the fuselage rather than beneath the wing is

Explanation:
When you change engine thrust, you don’t just change forward push—you also create a pitching moment about the aircraft’s center of gravity. The size of that moment depends on how far the thrust line is from the CG. Engines mounted on the rear fuselage have their thrust line closer to the CG, so the vertical offset—and thus the pitching moment produced by a throttle change—is smaller. That means throttle increments or reductions have less effect on the airplane’s pitch, making longitudinal control more stable and predictable. Options about fuel efficiency, maintenance ease, or roll stability don’t address how thrust changes translate into pitch moments, so they’re not the primary advantage of rear-fuselage engines.

When you change engine thrust, you don’t just change forward push—you also create a pitching moment about the aircraft’s center of gravity. The size of that moment depends on how far the thrust line is from the CG. Engines mounted on the rear fuselage have their thrust line closer to the CG, so the vertical offset—and thus the pitching moment produced by a throttle change—is smaller. That means throttle increments or reductions have less effect on the airplane’s pitch, making longitudinal control more stable and predictable.

Options about fuel efficiency, maintenance ease, or roll stability don’t address how thrust changes translate into pitch moments, so they’re not the primary advantage of rear-fuselage engines.

More practice questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy