Airport Engineering
As per ICAO recommendation, the rate of change of longitudinal gradient per 30 m length of vertical curve for A and B type of airports is limited to a maximum of

0.001
0.004
0.003
0.002

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Airport Engineering
Wing loading of an aircraft is

Gross total weight of the aircraft/ wing area
Load of the wings
Gross total weight of the aircraft/ load of the wings
Gross total weight of the aircraft/total available H.P of engines

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Airport Engineering
Castor angle is defined as the angle

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

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