In a rapid recovery from a dive, the effects of load factor would cause the stall speed to increase.

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Prepare for the Airplanes and Aerodynamics Commercial Pilot Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

In a rapid recovery from a dive, the effects of load factor would cause the stall speed to increase.

Explanation:
When the airplane is pulled out of a dive, the load factor rises above 1 as you maintain or regain level flight. Stall speed isn’t a fixed number; it increases with how much lift the wing must produce to support the airplane’s weight under that load factor. Lift is proportional to dynamic pressure and Cl, and at stall Cl is limited to Cl_max. So with a higher load factor, the wing must generate more lift, which means you must fly faster to reach Cl_max before stalling. In essence, Vs grows roughly with the square root of the load factor, so during a rapid recovery from a dive the stall speed increases.

When the airplane is pulled out of a dive, the load factor rises above 1 as you maintain or regain level flight. Stall speed isn’t a fixed number; it increases with how much lift the wing must produce to support the airplane’s weight under that load factor. Lift is proportional to dynamic pressure and Cl, and at stall Cl is limited to Cl_max. So with a higher load factor, the wing must generate more lift, which means you must fly faster to reach Cl_max before stalling. In essence, Vs grows roughly with the square root of the load factor, so during a rapid recovery from a dive the stall speed increases.

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