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Discussion :: GATE Aeronautical Engineering

  1. Consider two rockets P and Q fired vertically up with identical specific impulse and a payload of 2 kg. Rocket P has 2 identical stages, and each stage has 200 kg of propellant and 20 kg of structural weight. Rocket Q has a single stage with 400 kg of propellant and 40 kg of structural weight. Neglecting drag and gravity effects, the ratio of the change in velocity of P to that attained by Q is
    2. A.
    1.13
    B.
    1.23
    C.
    1.33
    D.
    1.43

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    Answer : Option B

    Explanation :

    -NA-

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