Home › Part 107 Practice Tests › Loading, Performance & Airport Operations Questions › Question 8
For a multirotor, how does added weight change the power needed simply to hover?
- A.Hover power decreases because thrust is spread over more mass
- B.Hover power stays the same; only forward flight is affected
- C.Hover power increases because the motors must produce more thrust
Correct answer
C. Hover power increases because the motors must produce more thrust
Why
A multirotor supports its entire weight with propeller thrust. More weight means more thrust is needed just to stay in place, before any maneuvering or climbing.
Source: FAA-G-8082-22 Ch. 4 · ACS knowledge area: sUAS Loading and Performance · From the Loading, Performance & Airport Operations practice bank (PER-008).