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Howto:Make a helicopter: Difference between revisions
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→rotorgear: Explanation of yasim drag factor.
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(→rotorgear: Explanation of yasim drag factor.) |
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==== rotorgear ==== | ==== rotorgear ==== | ||
If you are using one or more rotors you have to define a rotorgear. It connects all the rotors and adds a simple engine. In future it will be possible, to add a YASim-engine. | If you are using one or more rotors you have to define a rotorgear. It connects all the rotors and adds a simple engine. In the future it will be possible, to add a YASim-engine. | ||
* '''max-power-engine:''' the maximum power of the engine, in kW. | * '''max-power-engine:''' the maximum power of the engine, in kW. | ||
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* '''max-power-rotor-brake:''' the maximum power of the rotor brake, in kW<br /> at normal rpm (most? real rotor brakes would be overheated if used at normal rpm, but this is not simulated now) | * '''max-power-rotor-brake:''' the maximum power of the rotor brake, in kW<br /> at normal rpm (most? real rotor brakes would be overheated if used at normal rpm, but this is not simulated now) | ||
* '''rotorgear-friction:''' the power loss due to friction in kW at normal RPM | * '''rotorgear-friction:''' the power loss due to friction in kW at normal RPM | ||
* '''yasimdragfactor:''' | * '''yasimdragfactor:''' It is applied for whole aircraft. It is normally calculated as a result of YASim solver for plane. But the plane solver is disabled for rotorcraft. | ||
* '''yasimliftfactor:''' the solver is not working with rotor-aircraft.<br /> Therefore you have to specify the results yourself. 10 for drag and 140 for lift seem to be good starting values. Although the solve is not invoked for aircraft with at least one rotor, you need to specify the cruise and the approach settings. The approach speed is needed to calculate the gear springs. Use a speed of approx. 50knots. They do not need to match any real value. | * '''yasimliftfactor:''' the solver is not working with rotor-aircraft.<br /> Therefore you have to specify the results yourself. 10 for drag and 140 for lift seem to be good starting values. Although the solve is not invoked for aircraft with at least one rotor, you need to specify the cruise and the approach settings. The approach speed is needed to calculate the gear springs. Use a speed of approx. 50knots. They do not need to match any real value. | ||