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Post by Apotheon on Oct 20, 2018 16:30:42 GMT
My 4 Apophys rockets jerk around like they've got Parkinson's and the entire spacecraft wiggles... what's up? I just placed the 100 kN rockets, no special tricks, and they're shaking like there's no tomorrow.
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Post by bigbombr on Oct 20, 2018 16:44:02 GMT
My 4 Apophys rockets jerk around like they've got Parkinson's and the entire spacecraft wiggles... what's up? I just placed the 100 kN rockets, no special tricks, and they're shaking like there's no tomorrow. You might useful information in this thread. Long story short, ungimballed single main engine with RCS gives the most reliable missile steering (at least for me), but there are some tricks to make other setups work. |
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Post by Apotheon on Oct 20, 2018 19:30:01 GMT
My 4 Apophys rockets jerk around like they've got Parkinson's and the entire spacecraft wiggles... what's up? I just placed the 100 kN rockets, no special tricks, and they're shaking like there's no tomorrow. You might useful information in this thread. Long story short, ungimballed single main engine with RCS gives the most reliable missile steering (at least for me), but there are some tricks to make other setups work. I mean, it’s a spacecraft flipping out, not missiles... it’s got Apophys NTRs in the back. It’s not steering smoothly like the stock ships. |
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Post by Rocket Witch on Oct 20, 2018 19:45:09 GMT
If any craft's thrust-mass ratio is like that of an unctontrollable missile it will act the same as one. Engines with very fast gimbals will shake around a lot; mostly it just looks stupid but it could affect the craft's trajectory with enough thrust. ≤10 RPM is a good gimbal rotation rate to minimise this. Make sure the all the engines are actually at the back/bottom of the craft; AI doesn't like gimballed RCS.
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Post by bigbombr on Oct 20, 2018 21:06:42 GMT
You might useful information in this thread. Long story short, ungimballed single main engine with RCS gives the most reliable missile steering (at least for me), but there are some tricks to make other setups work. I mean, it’s a spacecraft flipping out, not missiles... it’s got Apophys NTRs in the back. It’s not steering smoothly like the stock ships. Perhaps the gimbal angle is much larger than with stock craft and your craft is constantly oversteering. |
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Post by Apotheon on Oct 21, 2018 14:05:54 GMT
It's an AI glitch, probably? Check out this screenshot. I have 5x 112 ton spaceships (identical) with 4x Apophys 100 kN HD NTRs in the back, with 5, 10, 15, 20, and 25 degree gimbal angles respectively and I've ordered them all to go straight towards the asteroid. The screenshot was taken after running the simulation for a few seconds and as you can see, the 5 degree spacecraft is still almost in its starting position, after which it will slowly turn to target and accelerate straight ahead just like it's supposed to without any problems. However, all other spaceships have already over-steered by 45 degrees and will continue over-steering, spinning, and tumbling uncontrollably and after a while, some of them end up on the right course and fly straight ahead for a while, but slowly drift and then start going all over the place again. After running the simulation for a few minutes, the 5 degree ship has left the rest of the ships behind it, with the 10 degree ship about half as far along and the rest of the ships grouped.
Also, the nozzles on all rockets that over-steer are vibrating in small, quick movements constantly while the motion of the ships is best described as staggering, starting and stopping in random directions.
After about 8 minutes, the 5 degree ship is well on its way, the 10 degree ship has finally lost control like the rest, and the rest are still basically in their starting positions having failed to produce purposeful acceleration.
Edit: I switched the screenshot. In this one, the 5 degree ship is still pointing in the starting direction (right), the 10 degree ship 45 degrees right, and the rest of the ships have already over-steered after a few seconds of simulation. All ships but the 5 degree one will spin and tumble for minutes and if they ever incidentally end up pointing towards the asteroids, it doesn't last long before they go crazy again, as I've already described above.
A "fix" is to use 5 degree gimbal angles, but now my ships cannot roll anymore and they turn slowly. Hopefully AI logic improves. |
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Post by Apotheon on Oct 21, 2018 20:28:20 GMT
I found the reason why the nozzles jerk around. Apparently, it's because they turn on and off every other frame.
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