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Air is streaming past a horizontal airpl...

Air is streaming past a horizontal airplane wing such that its speed is `90 ms^(-1)` at the lower surface and `120 ms^(-1)` over the upper surface. The wing is `10 m` long and has an average width of `2 m`, the difference of pressure on the two sides and the gross lift on the wing respectively, are (density of air `=1.3kgm^(-3)`)

A

`4095.0 "Pascal"`

B

`409.50 "Pascal"`

C

`40.950 "Pascal"`

D

`4.0950 "Pascal"`

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The correct Answer is:
A
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Air is streaming pasta horizontal airplane wing such that its speed is 90 m at the lower surface and 120 ms^(-1) over the upper surface. lithe wing is 10 m long and has an average width of 2 m , the difference of pressure on the two sides and the gross lift on the wing respectively, are (density of air =1.3kgm^(-3) )

Air is streaming past a horizontal airplane wing such that its speed is 120 metre per sec over the upper surface and 90 metre per sec at the lowers surface. If the density of air is 1.3 kg per metre^(3) and the wing is 10 metre long and has an average width of 2 metre, then the difference of the pressure on the two sides of the wing is :

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.

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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.

A fully loaded Boeing aircraft has a mass of 3.3xx10^(5) kg . Its total wing area is 500 m^(2) . It is in level flight with a speed of 960 km//h . (a) Estimate the pressure difference between the lower and upper surfaces of the wings (b) Estimate the fracitional increases in the speed of the air on the upper surfaces of the wing relative to the lower surface. The density of air is 1.2 kg//m^(3) .

An aeronautical engineer observed that on the upper and the lower surface of the wing of an aeroplane the speed of the air are 120 ms^(-1) and 90 ms^(-1) respectively during flight. What is the lift on the wing of aeroplane if its area is 3.2 m^(2) ? Given density of air is 1.29 kg//m^(3) .

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