During Retreating Blade Stall, the aircraft experiences roll in which direction?

During Retreating Blade Stall, the aircraft experiences roll in which direction?

• A. LEFT
• B. RIGHT
• C. UP
• D. DOWN

Answer: (B)

When the retreating blade stalls, that side of the rotor disk loses lift abruptly while the opposite (advancing) side still produces lift. The result is a roll toward the side where lift has collapsed—the retreating side. In the MH-65E during forward flight, the retreating blade is on the right side, so the aircraft rolls to the right. The other options describe vertical or opposite-direction effects (up/down are pitch changes, not roll), which don’t match the asymmetric lift caused by retreating blade stall.

When the retreating blade stalls, that side of the rotor disk loses lift abruptly while the opposite (advancing) side still produces lift. The result is a roll toward the side where lift has collapsed—the retreating side. In the MH-65E during forward flight, the retreating blade is on the right side, so the aircraft rolls to the right. The other options describe vertical or opposite-direction effects (up/down are pitch changes, not roll), which don’t match the asymmetric lift caused by retreating blade stall.