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krishnapadhye
- 1
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can anyone please give me the formula to calculate the thrust force exerted by the rotor blades of the helicopter on the air
The formula for thrust force on a helicopter is: Thrust = (Air density x Rotor area x Rotor speed^2 x Blade pitch angle)/4.
This formula takes into account the air density, the area of the rotor blades, the speed of the rotor, and the angle at which the blades are pitched.
Air density plays a crucial role in determining the thrust force on a helicopter. As air density increases, the amount of air molecules passing through the rotor also increases, resulting in a higher thrust force. On the other hand, a decrease in air density will result in a decrease in thrust force.
Rotor speed is a key factor in determining the thrust force on a helicopter. The faster the rotor spins, the higher the air velocity over the blades, resulting in a greater lift force. This is why helicopters can hover or fly vertically, as the high rotor speed generates enough thrust force to counteract the force of gravity.
The angle at which the rotor blades are pitched also has a significant impact on the thrust force. When the blades are pitched at a higher angle, more air is deflected downwards, resulting in a higher lift force. On the other hand, a lower blade pitch angle will result in a lower lift force. Pilots can adjust the blade pitch angle to control the amount of thrust force and maneuver the helicopter.
Yes, there are other factors that can affect the thrust force on a helicopter, such as the weight of the helicopter, the design of the rotor blades, and external environmental conditions like wind speed and direction. These factors can impact the efficiency of the rotor and ultimately affect the thrust force.