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Aerospace Engineering Gate 2010 Questions with Answer
Ques 14 GATE 2010
An aircraft is climbing at a constant speed in a straight line at a steep angle of climb. The load
factor it sustains during the climb is:
Ques 15 GATE 2010
All other factors remaining constant, if the weight of an aircraft increases by 30% then the takeoff
distance increases by approximately:
Ques 16 GATE 2010
An aircraft stalls at a speed of 40 m/s in straight and level flight. The slowest speed at which this
aircraft can execute a level turn at a bank angle of 60 degrees is:
Ques 17 GATE 2010
The absolute ceiling of an aircraft is the altitude above which it:
Ques 18 GATE 2010
An aircraft is cruising at an altitude of 9 km. The free-stream static pressure and density at this
akitude are 3.08×104N/m2 and 0.467 kg/m2 respectively. A Pitot tube mounted on the wing
senses a pressure of 3.31×104N/m2
Ignoring compressibility effects, the cruising speed of the
aircraft is approximately
Ques 19 GATE 2010
A propeller powered aircraft, trimmed to attain maximum range and flying in a straight line, travels
a distance R from its take-off point when it has consumed a weight of fuel equal to 20% of its
take-off weight. If the aircraft continues to fly and consumes a total weight of fuel equal to 50% of
its take-off weight, the distance between it and its take-off point becomes:
Ques 20 GATE 2010
The Irim curves of an aircraft are of the form Cm,...=(0.05-0.2δ)-0.1Ct where the elevator
deflection angle, δr, is in radians. The static margin of the aircraft is:
Ques 21 GATE 2010
The trim curves of an aircraft are of the form Cm,...=(0.05-0.2δ)
-0.1CL where the elevator
deflection angle, δc, is in radians. The change in elevator deflection needed to increase the lift
coefficient from 0.4 to 0.9 is:
Ques 22 GATE 2010
An aircraft is in straight and level flight at a constant speed v. It is disturbed by a symmetric vertical gust resulting in a phugoid oscillation of time period T.
Assuming that g is the acceleration due to gravity, Tis given approximately by:
Ques 23 GATE 2010
An aircraft is in straight and level flight at a constant speed v. It is disturbed by a symmetric vertical gust resulting in a phugoid oscillation of time period T.
If ν=200 m/s then the wavelength of the phugoid oscillations, assuming g=9.81 m/s2, is,
approximately:
Ques 24 GATE 2010
Consider an incompressible 2-D Couette flow of water between two walls spaced 1m apart. The
lower wall is kept stationary. What is the shear stress acting on the lower wall if the upper wall is
moving at a constant speed of 2 m/s? (μmatr=7×10-1N.s/m2)
Ques 25 GATE 2010
Consider an incompressible 2-D viscous flow over a curved surface. Let the pressure distribution
on the surface be p(s)=2+sin(π2+s)N/m2, where s is the distance along the curved surface
from the leading edge. The flow separates at
Ques 26 GATE 2010
In a 2-D, steady, fully developed, laminar boundary layer over a flat plate. if x is the stream-wise
coordinate, y is the wall normal coordinate and u is the stream-wise velocity component, which of
the following is true:
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