AFOQT Practice Test

What best describes the changing nature of the stall speed of an aircraft in level flight?

1. Dependent on weight only

2. A function of speed and weight

3. Constant at all altitudes

4. Independent of environmental factors

The correct answer is: A function of speed and weight

The correct choice reflects that stall speed in level flight is influenced by both the weight of the aircraft and its specific speed characteristics. As an aircraft's weight increases, the stall speed increases as well, since a heavier aircraft requires a higher airspeed to generate enough lift to counteract its greater weight. On the other hand, the stall speed is a critical airspeed that is generally specific to the aircraft's configuration, including its design and current weight. This choice effectively captures the relationship between weight and the stall speed phenomenon, emphasizing that as operational conditions change, particularly with different weights, the stall speed also varies accordingly. Other options do not accurately convey the multifaceted nature of stall speed; some may suggest a limited or incorrect perspective regarding how environmental factors and aircraft weight interplay.