## How do you calculate the lift force of a helicopter?

The lift formula or equation is CL ½ p V2 S. This formula is used to quantify the factors or components that influence lift production. The factors are coefficient of lift, air density, velocity, and surface area.

**How is lift calculated on a propeller?**

The lift equation states that lift L is equal to the lift coefficient Cl times the density r times half of the velocity V squared times the wing area A.

**How do you calculate aerodynamic lift?**

The final calculation for lift is to multiply density and velocity squared, divided by tow, then multiply by coefficient and wing area. This number will give you the total lift of your flying object.

### How do helicopters create lift?

Helicopters take advantage of their unique rotating wings (blades) and through a combination of rotors (blade sets) generate lift in a way that gives them more maneuverability, e.g. hovering. Drag Force. As a result the fuselage tends to rotate in the opposite direction of its main rotor spin.

**How does a helicopter lift off?**

For a helicopter, a lift is generated by the way the main rotor blades are formed so the air is pushed in a downward movement when the blades spin. As the air pressure changes, the helicopter lifts up.

**How do you calculate sales lift?**

% increase in sales (in $ or volume) obtained due to retailer merchandising. Calculated as (Incremental/Base) x 100.

#### What units do you use for lift?

Concept:

- L = Lift, which must equal the airplane’s weight in pounds.
- d = density of the air. This will change due to altitude.
- v = velocity of an aircraft expressed in feet per second.
- s = the wing area of an aircraft in square feet.
- CL = Coefficient of lift , which is determined by the type of airfoil and angle of attack.

**How lift is measured?**

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 lift coefficient then expresses the ratio of the lift force to the force produced by the dynamic pressure times the area.

**Why is there a 1/2 in the lift equation?**

Near sea level the value is . 00237 slugs/cu ft, or 1.229 kg/cu m, but the value changes with air temperature and pressure. So modern aerodynamicists include a factor of 1/2 into the definition of the modern lift equation to reference the aerodynamic forces to the dynamic pressure (1/2 density times velocity squared).

## How much force is needed to lift the 10Kg weight?

How much force is needed to lift the 10Kg weight? The correct answer is (B) 5 Kg. In a double-pulley system, the force is equal to the weight divided by two. It will require a 5 Kg force to lift a 10Kg weight.