If the unaccelerated stall speed of an airplane is 60 knots, what will the stall speed be under a load factor of 2 Gs?

If the unaccelerated stall speed of an airplane is 60 knots, what will the stall speed be under a load factor of 2 Gs?

• A. 66 knots.
• B. 74 knots.
• C. 84 knots.
• D. 96 knots.

Answer: (C)

To determine the stall speed under a load factor of 2 Gs, it's important to understand the relationship between load factor and stall speed. The stall speed increases with an increase in load factor because the aircraft must generate more lift to counteract the increased weight experienced during maneuvers that increase the load factor. In general, stall speed can be calculated using the formula: \[ V_s = V_{s0} \sqrt{n} \] where \( V_s \) is the new stall speed, \( V_{s0} \) is the unaccelerated stall speed (60 knots in this case), and \( n \) is the load factor (2 Gs). Substituting the values into the formula gives: \[ V_s = 60 \text{ knots} \times \sqrt{2} \] Calculating \( \sqrt{2} \) approximately equals 1.414. Thus, the new stall speed becomes: \[ V_s = 60 \text{ knots} \times 1.414 \approx 84.84 \text{ knots} \] Rounding down to the nearest whole number gives 84 knots. Therefore, under a load factor of 2 Gs, the stall

To determine the stall speed under a load factor of 2 Gs, it's important to understand the relationship between load factor and stall speed. The stall speed increases with an increase in load factor because the aircraft must generate more lift to counteract the increased weight experienced during maneuvers that increase the load factor.

In general, stall speed can be calculated using the formula:

[ V_s = V_{s0} \sqrt{n} ]

where ( V_s ) is the new stall speed, ( V_{s0} ) is the unaccelerated stall speed (60 knots in this case), and ( n ) is the load factor (2 Gs).

Substituting the values into the formula gives:

[ V_s = 60 \text{ knots} \times \sqrt{2} ]

Calculating ( \sqrt{2} ) approximately equals 1.414. Thus, the new stall speed becomes:

[ V_s = 60 \text{ knots} \times 1.414 \approx 84.84 \text{ knots} ]

Rounding down to the nearest whole number gives 84 knots. Therefore, under a load factor of 2 Gs, the stall