Good solution to control jet engine thrust on a helicopter?

[jocking]

I made a helicopter, which uses a jet engine. At first, I only used the pitch to move forward, but the speed wasn't excellent. Then I fitted the engine with an exhaust, and used a throttle to control the spoiler on it (to turn off forward thrust if needed).
My issue with this is that it made the helicopter very unstable, when I try to pitch or move a little bit, it goes into a dive and rolls all around the place.

Is there a good method or workshop MC to control the thrust regarding to the pitch or something? How can I fix this?

[qweqw]

Do you have a gyro in your creationp?

[pontfogel]

I made a few helicopters like that and encountered the same problem. I didn't solve it as such but worked my way around it by only using the jet thrust when autopilot was on and by avoiding any hard maneuvers. I also limted max thrust from the jet. It tended to get very inefficient after 60-70 percent thrust anyway.
I found it worked best if I combined helicopter forward tilt with the jet thrust, so I created a secondary tilt control that maxed out at the most efficient tilt value and that bypassed the gyro. Without the jet that gyro control also becomes very good for precise slow movement.

[jocking]

Originally posted by HentaiLoverX:

Do you have a gyro in your creationp?

Yes, I have a gyro, it's almost unusable without it. Auto hover is always on.

[jocking]

Originally posted by pontfogel:

I made a few helicopters like that and encountered the same problem. I didn't solve it as such but worked my way around it by only using the jet thrust when autopilot was on and by avoiding any hard maneuvers. I also limted max thrust from the jet. It tended to get very inefficient after 60-70 percent thrust anyway.
I found it worked best if I combined helicopter forward tilt with the jet thrust, so I created a secondary tilt control that maxed out at the most efficient tilt value and that bypassed the gyro. Without the jet that gyro control also becomes very good for precise slow movement.

I have found a partial solution, by using a PID and a switchbox. That way you can set the height and it will always hold that, no matter what. Somehow this stabilizes it enough to be able to use the tilt and jet thrust at the same time. It took me a few hours to configure it though, because the values vary by heli size.
https://www.youtube.com/watch?v=dGr4ZwL6FXY&ab_channel=MrNJersey

[pontfogel]

Originally posted by jocking:

Originally posted by pontfogel:

I made a few helicopters like that and encountered the same problem. I didn't solve it as such but worked my way around it by only using the jet thrust when autopilot was on and by avoiding any hard maneuvers. I also limted max thrust from the jet. It tended to get very inefficient after 60-70 percent thrust anyway.
I found it worked best if I combined helicopter forward tilt with the jet thrust, so I created a secondary tilt control that maxed out at the most efficient tilt value and that bypassed the gyro. Without the jet that gyro control also becomes very good for precise slow movement.

I have found a partial solution, by using a PID and a switchbox. That way you can set the height and it will always hold that, no matter what. Somehow this stabilizes it enough to be able to use the tilt and jet thrust at the same time. It took me a few hours to configure it though, because the values vary by heli size.
https://www.youtube.com/watch?v=dGr4ZwL6FXY&ab_channel=MrNJersey

I'm not sure exactly how your creation works but my problem with jets mainly arose if I turned altitude hold off while at high speed. I used several PIDs for various auopilot functions but it was always turning them off at speed that caused uncontrollable spin for me. At low speed my helicopters were stable.

[Maldonado]

I did the exact same thing and my solution was to just keep lowering the exhaust power until it became stable, and then just made it an on/off switch rather than a throttle lol. I found that disabling the gyro stabilization actually made it more stable under afterburner, but I had to manually control the heli obviously. My "altitude hold" system can be left on without losing any stability though, so I usually just flip that on and the afterburners and just manually control the roll and yaw