Discussion
Assertion (A): A blunt-nosed re-entry vehicle carries a detached bow shock.
Reason (R): A blunt nose would require a flow deflection larger than any attached shock can provide.
Select the correct answer from the options below.
Answer: A
Both statements are true and the reason accounts for the assertion. At the stagnation streamline the required turning is effectively ninety degrees, far beyond the maximum deflection, so the shock must stand off. The bluntness is deliberate: the detached shock holds the hottest gas away from the surface.
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