← All explained questions · Supplemental · VII — Slow Flight, Stalls, and Spins
How does load factor (G-loading) in a coordinated turn affect stall speed?
Choices
Stall speed is independent of load factor.
Load factor is the dominant variable in maneuvering stall speed.
✓ Stall speed increases with the square root of the load factor.correct
a 60° banked level turn (2 G) increases stall speed by ~41%. In a level turn, lift must equal weight × load factor. Stall speed scales as √(load factor): at 2 G (60° bank) stall speed is √2 ≈ 1.41× the 1 G value. This is why "accelerated stalls" in steep turns occur at airspeeds well above book Vs.
Stall speed decreases as bank angle increases.
Reversed — stall speed increases with bank in a level turn.
Stall speed only changes when flaps are extended.
Flap extension changes stall speed, but load factor is the answer to the question asked.
Why
a 60° banked level turn (2 G) increases stall speed by ~41%. In a level turn, lift must equal weight × load factor. Stall speed scales as √(load factor): at 2 G (60° bank) stall speed is √2 ≈ 1.41× the 1 G value. This is why "accelerated stalls" in steep turns occur at airspeeds well above book Vs.
FAA source: PHAK Ch 5, AFH Ch 4; PHAK Chapter 5 — Aerodynamics of Flightbrowse the reference library →
Original study question written for this course — representative of FAA knowledge-test topics, not an actual current FAA exam question.