An airplane wing is designed so that air travels __________ (faster, slower) under the wing. This ___________

Question

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An airplane wing is designed so that air travels __________ (faster, slower) under the wing. This _____________ (increases, decreases) the pressure under the wing, giving the plane lift.

SECOND QUESTION:

Would atmospheric pressure be greater at sea level or a mountaintop? Why?


THIRD QUESTION:

When the forward motion of the above airplane is constant, then
a. the lift and the weight are equal. b. the drag and the thrust are equal. c. the drag and the lift are equal. d. the weight and the thrust are equal.

Answer 1

An airplane wing is designed so that air travels slower under the wing. This increases, the pressure under the wing, giving the plane lift.

Really it should be that the air travels *faster over* the wing, which*decreases* the *pressure above* the wing, giving the plane lift.

Answer 2

1. Air travels faster over the wing, and slower under the wing this creates lift.

2. Air pressure is the weight of all the air from the edge of space to the ground, pressing on the ground. The higher you go up, the less air is above you, and therefor less air pressure at higher elevation.
At sea level atmospheric pressure is approximatly 14.7 P.S.I.
and in space it is 0 P.S.I.

3. Lift and Weight are equal, if the plane is in level flight, and the elevation is constant.
Drag and thrust are not equal, if they were the plane would go nowhere. Thrust far outweighs drag if the plane is to fly. Thrust propels the plane forward and this forward motion also creates the lift at the wings.

Answer 3

i think there is a contentious issue with Bernoulli principle - popular explanation of lift
"....why the air goes faster over the top of the wing and this is where the popular explanation of lift falls apart....."

"...The popular explanation also implies that inverted flight is impossible. It certainly does not address acrobatic airplanes, with symmetric wings (the top and bottom surfaces are the same shape), or how a wing adjusts for the great changes in load such as when pulling out of a dive or in a steep turn?....."

"...The problem is that we are missing a vital piece when we apply Bernoulli’s principle. We can calculate the pressures around the wing if we know the speed of the air over and under the wing, but how do we determine the speed? As we will soon see, the air accelerates over the wing because the pressure is lower, not the other way around....."

But I would suggest the below source to get more understanding of the issues

Answer 4

An airplane wing is designed so that air travels slower under the wing. This makes the pressure under the wing more than the pressure over the wing. This results in lift.

Answer 5

An aeroplane wing uses the "Bernoulli Effect"
to cause a Lower Pressure above the wing, than the bottom of the wing.

In General, The "Bernoulli Effect" states that the
higher the velocity of a fluid, the lower the pressure.

The under side of a wing is relatively straight, and the
upper side is curved. The air traveling along the top curved surface travels faster than the air along the under side to catch up with the air under the wing because it has to travel farther. This speedin up of the air on the top surface of the wing, lowers the pressure.

In effect the air under the wing has a higher pressure than the upper air.

The same effect is achieved in a Wind Tunnel by air being forced around a stationary wing.

Answer 6

The lift of an airplane, or the force that supports it in flight, is basically the result of the direct action of the air against the surfaces of the wings, which causes air to be accelerated downward. The lift varies with the speed, there being a minimum speed at which flight can be maintained. This is known as the stall speed. Because speed is so important to maintain lift, objects such as fuel tanks and engines, that are carried outside the fuselage are enclosed in structures called nacelles, or pods, to reduce air drag (the retarding force of the air as the airplane moves through it).

Answer 7

the least complicated clarification is that carry (flight) is in basic terms the end results of fluid bypass (air) approximately an airfoil; the end results of shifting an airfoil (wing), with the aid of despite ability, for the period of the air. it somewhat is in accordance with 2 key rules of physics: one million) Newton’s rules of action and a couple of) Bernoulli’s theory of tension. one million) Newton’s 0.33 regulation of action sates that every time one physique exerts a tension on yet another, the 2d physique continuously exerts on the 1st, a tension it somewhat is equivalent in value yet opposite in path. as a results of this, while the propeller or jet engine on an plane pushes air backwards, the air pushes the plane forward, inflicting airflow over the plane’s wings. 2) Bernoulli’s theory of tension states that a upward push interior the fee of stream of a fluid or air could reason a decrease interior the fluid’s tension. because of the fact a wing has an greater floor it somewhat is curved, the air flowing over the suitable of the wing strikes speedier than the air flowing under the wing. This motives the stress to be decrease on the suitable than the backside, thereby producing carry. If the carry tension generated is larger than the burden of the plane, the plane will fly. some human beings will say that it somewhat is barely Newton’s regulation that motives carry mutually as human beings will defend that, no, it somewhat is barely Bernoulli’s theory that motives carry. somewhat it somewhat is a mix of those 2 that generates carry and helps airplanes to fly. Even a barn door can fly if it has an attitude of attack relative to the airflow so as that there is airflow against its tilted decrease facet and the reaction tension is the carry - as long as there is adequate of this tension pushing up against the decrease floor or, in different words, as long because of the fact the barn door has adequate airspeed. An airfoil formed wing would be greater helpful over a much wider variety of air speeds, whether, because of the fact it combines carry from air hitting the decrease floor with carry generated with the aid of the stress differential of airflow over the airfoil shape.

Answer 8

slower - beroulli priciple

less air is piled up on a mountain, so the air pressure is lower

if forward momentum is constant, thrust and drag are equal. drag and thrust are both about motion on the line of travel.

Answer 9

the wing is shaped llike an ore, and (faster, water and stops the plane turninng to one side, balance. iwatch a show within the week.

Answer 10

If you don't know the answer to this question, you don't understand anything about the subject matter. You can ask us here, but what are your plans for the exam?

Faster, increases.