Engine power for a helicopter is calculated by taking into account the weight of the helicopter and its load, the altitude, and the air density. Different calculations are used for different types of helicopters.
The engine power of a helicopter directly affects its ability to generate lift. The more powerful the engine, the more lift the helicopter can generate.
As altitude increases, the air becomes thinner and less dense, making it more difficult for the helicopter to generate lift. This means that the engine will need to work harder to maintain the same level of lift.
The design of the helicopter, including its rotor blades, weight distribution, and aerodynamics can also affect its ability to lift off. Additionally, environmental factors such as wind and temperature can impact the required engine power.
As the weight of a helicopter increases, the engine will need to work harder to generate enough lift to overcome the added weight. This means that a heavier helicopter will require more engine power to lift off than a lighter one.