A Boeing 747 is traveling at a height of 12,192 meters and at a speed of 265.5 meters per second in a straight line. There is a total of 510.97 m2 of wing area on this aircraft. At 12,192 meters, the coefficient of lift is 0.52, and the density of air is roughly 0.30267 kg/m3 at that altitude. The 747 has a total weight of 2,833,500 N. (637,000 pounds).

Contents

- 1 How much lift does a Boeing 747 produce?
- 2 What is the lift coefficient of an airplane?
- 3 What is a good lift coefficient?
- 4 What is the best lift to drag ratio?
- 5 What is K in drag polar?
- 6 Are there any 747 200 still flying?
- 7 Can a 747 take-off with 2 engines?
- 8 How do you calculate lift coefficient?
- 9 How is aircraft lift calculated?
- 10 What is maximum lift coefficient?
- 11 Does lift coefficient change with velocity?
- 12 Which flap gives the best lift coefficient?
- 13 What is negative coefficient of lift?

## How much lift does a Boeing 747 produce?

Approximately 510 square meters (5,500 square feet) is the surface area of the wings of a Boeing 747, which can generate up to 390 tons (850,000 pounds) of lift when fully extended.

## What is the lift coefficient of an airplane?

The lift coefficient Cl is equal to the lift L divided by the quantity: density r times half the velocity V squared times the wing area A. The formula for calculating the lift coefficient Cl is as follows: The lift coefficient, on the other hand, expresses the relationship between the lift force and the force generated by the dynamic pressure multiplied by the area of the lift.

## What is a good lift coefficient?

Lift Coefficient: The frequency of occurrence A typical number for the sort of airfoil section indicated above is around 1.5, which is close to the industry standard. The comparable temperature is around 18 degrees.

## What is the best lift to drag ratio?

This is particularly relevant in the design and operation of high-performance sailplanes, which can achieve glide ratios of nearly 60 to 1 (60 units of forward distance for each unit of descent) in the best cases, but with glide ratios of 30:1 considered adequate for general recreational use in the worst cases.

## What is K in drag polar?

K=1Ο€ARe. CD0 is the parasite drag coefficient when there is no lift. CDi=C2L/(ARe), or drag coefficient owing to lift, is defined as CDi=C2L/(ARe) (induced drag). e, the Oswald efficiency factor, takes into account all of the impacts of the airplane.

## Are there any 747 200 still flying?

Today’s 747-200 is a 747-200. As a result of the 747-200’s demise, according to statistics from ch-aviation.com, there is just one operational example of the aircraft left in the globe. The engine firm Rolls-Royce is the proud owner of this aircraft, which has the registration N787RR. The plane, which is 41 years old, is used as a testbed aircraft by the corporation.

## Can a 747 take-off with 2 engines?

Is it possible for a 747-400 to fly on two engines if two of its engines on the same wing fail simultaneously? Answer: It varies depending on the weight and height of the object. Maintaining altitude with two engines may not be practicable while flying at extremely high altitudes and with big loads. It may be feasible to sustain altitude with two engines if the aircraft is less in weight.

## How do you calculate lift coefficient?

To compute the coefficient of lift, do the following:

- Using the formula above, multiply fluid pressure by velocity squared and divide the result by two. The surface area is multiplied by the number of the previous product. Calculate the lift force by multiplying it by the product.

## How is aircraft lift calculated?

In accordance with modern lift equations, lift equals the lift coefficient (Cl) multiplied by the density of the air (r) multiplied by half the square of the velocity (V) multiplied by the area of the wing (A).

## What is maximum lift coefficient?

The maximum lift coefficient of an airfoil is dictated by the geometry of the airfoil itself. The maximum lift coefficient increases in direct proportion to the amount of camber present. The greater the radius of the leading edge, the lower the maximum lift coefficient will be at its maximum.

## Does lift coefficient change with velocity?

Previously, we discovered that lift varies linearly with the square of the velocity as well as with the area, density, camber, and tiny angles.

## Which flap gives the best lift coefficient?

The Fowler flap gives the highest amount of lift while generating the least amount of drag possible.

## What is negative coefficient of lift?

Negative values of lift coefficient are found to occur exclusively at low angles of attack, which corresponds to laminar separation without flow transition and without reattachment, among the many flow regimes investigated.