GATE AE 2017 Paper 1 — page 17

Questions 49–51 of 65. Imported answers require review unless explicitly marked reviewed.

A single stage chemical rocket, having an initial mass of 10,000 kg and specific impulse of 450 s, is launched from the surface of the earth and has to reach the escape velocity (11 km/s) at burn out. Consider

m/s². If the atmospheric drag and the effect of gravity are to be neglected, the mass of propellant to be carried by the rocket is equal to ________ kg (in one decimal place).

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A centrifugal compressor requires 1800 kW of power to compress 10 kg/s of air. Consider the whirl velocity component is equal to the impeller speed (i.e., no slip) and no losses in the impeller. If the impeller has to rotate at 1900 rad/s, the diameter of the impeller is to be ________ m (in two decimal place).

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An aircraft wing is idealized as a cantilever beam of constant width and length

with a tip mass of weight

(Newtons) and has a uniformly distributed loading of

(Newtons/m) as shown in the figure. Flexural rigidity = EI and

. The upward deflection of the tip of the aircraft wing under the given loading can be expressed as:

. The value of

is ________ (in three decimal places).

Diagram for Aerospace Engineering question 51

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2017 · Paper 1

Question 49

Question 50

Question 51