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The drag of a body moving in air at supersonic velocity — Answer & Solution | Civexa

Fluid Mechanics & Hydraulics · Flow Past Immersed Bodies

Flow Past Immersed Bodies MCQ with answer and solution

The drag of a body moving in air at supersonic velocity

Solution

Concept

Supersonic drag

Step-by-step solution

1. At supersonic speeds the drag is mostly wave drag from the front. 2. Streamlining the rear changes it little.

Explanation

The rear shape has little effect on drag.

Why the other options are wrong

Others are incorrect.

Shortcut

Rear streamlining: no change.

Correct answer: C) remains practically unchanged by streamlining of the rear

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