WING: AIR ::...

WING: AIR ::

arm : hand

lung: breath

flipper: water

engine: jet

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Fig. represents vertical sections of four wings moving horizontally in air. In which case the force is upwards

The velocity of the wind over the surface of the wing of an aeroplane is 80ms^(-1) and under the wing 60ms^(-1) . If the area of the wing is 4m^(2) , the dynamic lift experienced by the wing is [density of air =1.3kg.m^(-3) ]

The flow speeds of air on the lower and upper surfaces of the wing ofan aeroplane are v and sqrt2v respectively. A is the area of the wing and rho is the density of th e surrounding air. What is the force of the dynamic lift on the wing ?

Air is streaming past a horizontal air plane wing such that its speed is 120 ms^-1 over the upper surface and 90 ms^-1 at the lower surface. If the density of air is 1.3 kg m^-3 m find the difference in pressure between the top and bottom of the wing. If the wing is 10 m long and has an average width of 2 m , calculate the gross lift of the wing.

In a test experiement on a model aeroplane in a wind tunnel, the flow speeds on the lower and upper surfaces of the wing are upsilon and upsilonsqrt(2) respectively. If the density of air is rho and the surface area of the wings is A, what is the dynamic lift on the wing of aeroplane.

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