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Match each design speed in List I with its meaning in List II.

List I

A. VS

B. VA

C. VC

D. VD

List II

1. Design cruising speed

2. Stalling speed

3. Design dive speed

4. Design manoeuvring speed

Select the correct match.

  • A.A-3, B-4, C-1, D-2
  • B.A-2, B-4, C-1, D-3
  • C.A-1, B-4, C-2, D-3
  • D.A-2, B-1, C-4, D-3

Answer: B

These four speeds bound the flight envelope from left to right. The margin between VC and VD is prescribed so that an inadvertent overspeed does not immediately take the aircraft beyond the condition it was designed for.

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