GATE AE 2021 Paper 1 — page 15

Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.

A shock moving into a stationary gas can be transformed to a stationary shock by a change in reference frame, as shown in the figure. Which of the following is/are true relating the flow properties in the two reference frames?

Diagram for Aerospace Engineering question 33

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For a conventional fixed-wing aircraft, which of the following statements are true?

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Making

more negative leads to an increase in the frequency of its short-period mode.

Making

more negative leads to a decreased damping of the short-period mode.

The primary contribution towards

is from the aircraft wing.

Increasing the size of the vertical fin leads to a higher yaw damping.

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Which of the following statement(s) is/are true?

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Service ceiling is higher than absolute ceiling for a piston-propeller aircraft.

For a given aircraft, the stall speed increases with increase in altitude.

Everything else remaining the same, a tailwind increases the range of an aircraft.

For a jet aircraft constrained to fly at constant altitude, there exists an altitude where its range is maximum.

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2021 · Paper 1

Question 33

Question 34

Question 35