In the presence of skin friction on the surface of an airfoil, which of the foll

Question

In the presence of skin friction on the surface of an airfoil, which of the following conditions will cause a separation of the boundary layer from the surface? Circle only one. Asymmetric flow Adverse pressure gradient Negative moment coefficient Aerodynamic stall None of the above In aerodynamics the load factor, n, is defined as the ratio of the aircraft's lift to weight; the load factor is affected by the bank angle of the aircraft. The pilot of a Cessna 172 trainer aircraft is practicing turning maneuvers 500 feet above the beach. She is holding the aircraft in a 60 degree bank angle with a pitch just below the stall angle. Calculate the speed of the aircraft in mph. Assume that the coefficient of lift is unaffected by bank angle. Show your work. Cessna 172 Specifications: Airfoil Design: NACA 2412 Wing span = 10.92 m Average chord length = 1.49 m Gross weight = 2300 lbs.

Explanation / Answer

SOLUTION:

Problem 1) Option d) is correct.

Ref: http://web.mit.edu/hml/ncfmf/12BLC.pdf

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