What causes the advancing blade to flap up?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Prepare for the Theory of Rotary Wing Flight Test. Enhance your understanding with detailed questions and thorough explanations. Build confidence for your success!

Multiple Choice

What causes the advancing blade to flap up?

Explanation:
The advancing blade flaps up because it experiences more lift than the retreating blade in forward flight. When the helicopter moves forward, the blade on the advancing side meets the air with a higher relative speed (combination of rotor rotation and forward motion), generating greater lift. The blade’s flap hinge allows it to rise to relieve this extra lift, helping balance the lift across the rotor disk. This upward flap is a direct aerodynamic response to the increased lift, not caused by drag or weight shifting.

The advancing blade flaps up because it experiences more lift than the retreating blade in forward flight. When the helicopter moves forward, the blade on the advancing side meets the air with a higher relative speed (combination of rotor rotation and forward motion), generating greater lift. The blade’s flap hinge allows it to rise to relieve this extra lift, helping balance the lift across the rotor disk. This upward flap is a direct aerodynamic response to the increased lift, not caused by drag or weight shifting.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy