Airport Engineering
The reduced level of the proposed site of an air port is 2500 m above M.S.L. If the recommended length by I.C.A.O. for the runway at sea level is 2500 m, the required length of the runway is

3250 m
2500 m
3725 m
3000 m

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Airport Engineering
Castor angle is defined as the angle

Between the horizontal and the fuselage axis
Formed by the longitudinal axis of the aircraft and the direction of movement of the nose gear
Between the direction of wind and the longitudinal axis of the runway
Between the true speed of the aircraft and the crosswind component

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Airport Engineering
Speed of

Sound at 0°C is 1190 kmph
Sound at 0°C is called one Mach
All listed here
Sound varies 2.4 kmph per degree centigrade rise in temperature

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