What is the stall speed with Flaps UP/Idle (Vs)?

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Multiple Choice

What is the stall speed with Flaps UP/Idle (Vs)?

Stall speed in a given configuration is the minimum steady speed at which the airplane can maintain level flight without the wings stalling. When the wings are clean (Flaps Up) and power is at idle, you don’t gain extra lift from flaps and there’s no thrust-induced lift to help you stay airborne, so you need a higher airspeed to generate enough lift to balance the weight. For this aircraft, at the assumed weight and standard atmosphere, that clean configuration stall speed is 96 knots, so Vs is 96 knots. If the airplane were heavier, Vs would be higher; if you extended flaps or used another configuration that increases lift at lower speeds, the stall speed would be lower. The numbers reflect different configurations or weights, but the clean Vs value used for planning in this question is 96 knots.

Stall speed in a given configuration is the minimum steady speed at which the airplane can maintain level flight without the wings stalling. When the wings are clean (Flaps Up) and power is at idle, you don’t gain extra lift from flaps and there’s no thrust-induced lift to help you stay airborne, so you need a higher airspeed to generate enough lift to balance the weight. For this aircraft, at the assumed weight and standard atmosphere, that clean configuration stall speed is 96 knots, so Vs is 96 knots.

If the airplane were heavier, Vs would be higher; if you extended flaps or used another configuration that increases lift at lower speeds, the stall speed would be lower. The numbers reflect different configurations or weights, but the clean Vs value used for planning in this question is 96 knots.

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