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For the same engine at rest on the ground, the thrust is

  • A.0 kN
  • B.40 kN
  • C.24 kN
  • D.16 kN

Answer: B

With no flight speed there is no ram drag, so gross and net thrust are equal at \( 80 \times 500 = 40\,000 \) newtons. That is precisely why a static thrust figure overstates what the engine delivers once the aircraft is moving.

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