Sears-Haack body
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Explanation
Sears-Haack body is the theoretical fuselage design that produces the most efficient supersonic flight for a certain volume and diameter with the lowest possible wave drag. The area distribution is as smooth as possible and it follows a profile as shown in the picture.
Frequently Asked Questions
Does the Sears-Haack body follow Whitcomb’s area rule?
No, it does not. The area rule finds its application in the reduction of wave drag at transonic speeds. Sears-Haack body is a theoretical shape for supersonic flow, derived from the Prandtl-Glauert equation, which itself is valid only in subsonic and supersonic flows and not in a transonic flow.