SIFT Army Aviation Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

Helicopters experience effective translational lift while transitioning to forward flight at approximately __ to __ knots:

20, 28

10, 20

16, 24

Translational lift is a phenomenon that occurs as helicopters transition from hover to forward flight. It refers to the increased efficiency of the rotor system due to the movement of the aircraft through the air. As the helicopter gains forward speed, the airflow over the rotor blades improves, which enhances lift and decreases power requirements.

The correct range for effective translational lift to occur is around 16 to 24 knots. Within this speed range, the rotor blades begin to receive undisturbed air, reducing drag and allowing for improved lift generation. This enhanced performance is crucial for efficient flight operations, contributing to better maneuverability and fuel economy.

Understanding the specific speed range for effective translational lift is important for pilots, as it helps them optimize their flying techniques and makes their transitions from hover to forward flight smoother and more efficient.

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12, 24

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