Doubling the airspeed in level flight affects parasite drag how?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Study for the Commercial Pilot Test with interactive questions on aerodynamics and airplanes. Each question comes with detailed explanations to boost your readiness for the exam.

Multiple Choice

Doubling the airspeed in level flight affects parasite drag how?

Explanation:
Parasite drag increases with dynamic pressure, which grows with the square of speed. The usual expression is D_p = ½ ρ V^2 C_d S, so when speed doubles, V^2 becomes four times larger. That makes parasite drag four times greater. The total drag includes induced drag too, but the question focuses on parasite drag, so the correct result is quadrupling.

Parasite drag increases with dynamic pressure, which grows with the square of speed. The usual expression is D_p = ½ ρ V^2 C_d S, so when speed doubles, V^2 becomes four times larger. That makes parasite drag four times greater. The total drag includes induced drag too, but the question focuses on parasite drag, so the correct result is quadrupling.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy