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Stability and speed performance degraded in KSP 1.11
With this design we moved on from the Bensen’s age, to the modern era of gyrocopters. Meanwhile the principles of flight remained the same - a free spinning rotor to provide the lift and a powered propeller for the forward thrust.
- Type: SPH
- Class: aircraft
- Part Count: 135
- Pure Stock
- KSP: 1.9.1
Built in the SPH in KSP version 1.9.1.
- Activate SAS and hit the Brakes
- Press [Space] to start main rotor prerotation. Wait ~20sec, let the rotor build some speed, preferably above 200 rpm
- Set full throttle and let it roll for take-off. Starting from 25m/s you can pull on the stick. As I said in the notes section, sometimes the craft is poorly initialized with a strong tendency to bank on the left side. In this case you have to relaunch.
- During flight use the throttle to control the aircraft pitch attitude and/or the rate of climb/descend.
- Starting form ~1000m altitude it may require to trim the inner propeller angle to 16-18° to prevent the craft to roll on it’s right side .
- Work with the throttle and pay attention to the airspeed as this is the only thing that keeps the main rotor spinning; in dives or other flight maneuvers try not to exceed 50m/s as the rotor rpm will decrease very rapidly becoming unable to maintain the lift
Notes / Revisions
- resized the prop engines to do a better job of canceling each other’s torque rotation including the vertical rotation caused by the dissymmetry of lift in the main rotor. Still not perfect though, as the magnitude of those forces is a function of altitude (air density), hence the need for trim adjustment of the propeller with altitude. Moreover, sometimes the craft is spawned having a strong tendency to bank on the left. Unfortunately, I haven’t figured out the cause. On those occasions you just have to relaunch.
- aesthetics improvements