MyQuestionIcon

3

You visited us 3 times! Enjoying our articles? Unlock Full Access!

Streamline Flow

The pressure ...

Question

The pressure difference between the upper and lower surface of the wing provides lift to the aeroplane.why?

Open in App

Solution

Dear student,
Find the answer to your query as under:

When there is a pressure difference between two points then it means that due to the pressure gradient present there exists a net force in the direction from the area of higher pressure towards the lower pressure. So when an airplane flies there is a net high-pressure region generated beneath wings and a low-pressure area above the wings, thus a net force from below acts on the wings which provides the necessary lift for the plane to get in the air.

Regards
Satyendra Singh

Suggest Corrections

thumbs-up

0

Similar questions

Q. Air is streaming past a horizontal airplane wing such that its speed is

90 m s^{- 1}

at the lower surface and

120 m s^{- 1}

over the upper surface. If the wing is 10 m long and has an average width of 2m, the difference of pressure on the two sides and the gross lift on the wing respectively, are (density of air

= 1.3 k g m^{- 3})

Q. A fully loaded Boeing aircraft has a mass of

3.3 \times 10^{5}

kg, its total wing area is

500 m^{2}

. It is in level flight with speed of 960 km/h. (a) Estimate the pressure difference between the lower and upper surfaces of the wings. (b) Estimate the fractional increase in the speed of the air on the upper surface of the wing relative to lower surface. (The density of air is

ρ = 1.2 k g m^{- 3}

Q. An aeroplane of mass

3 \times 10^{4} k g

and total wing area of

120 m^{2}

is in a level flight at some height. The difference in pressure between the upper and lower surfaces of its wings in kilopascals is :

(g = 10 m / s^{2})

Q. An aeroplane of mass 3

\times

^{4}

kg and total wing area 120m

^{2}

is in a level flight at same height.The difference in pressure between the upper and lower surface of its wings in Kilo Pascal is( g

=

^{- 2}

Q. The flow speeds of air on the lower and upper surfaces of the wing of an aeroplane are v and respectively.The density of air is p and surface area of wings is A.The dynamic lift on the wing is-

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Fluid Flow

PHYSICS

Watch in App

explore_more_icon

Explore more

Streamline Flow

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon