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Payload drag and forward flight performance

A bulky payload that adds significant aerodynamic drag will most affect which aspect of performance?

  • A.Forward flight speed and endurance, because more power is needed to push through the air
  • B.Only the aircraft's performance while powered off on the ground
  • C.The accuracy of the aircraft's compass
Correct answer

A. Forward flight speed and endurance, because more power is needed to push through the air

Why

Drag rises quickly with speed, so a bulky load mainly penalizes cruise flight. Expect lower top speed and noticeably shorter range even if hover performance seems acceptable.

Source: FAA-G-8082-22 Ch. 8 · ACS knowledge area: Determining the Performance of an sUAS · From the Loading, Performance & Airport Operations practice bank (PER-052).

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