Hey there, I found a strange bug in my plane. After starting the engines and flying for some time, it suddenly loses balance and crashes down.
I did some testing on lighter version and it happens exactly at 26% fuel or 3 minutes 21 seconds of flying @ 100% throttle (a second later for the "public" model). The cause is the VTOL engine that is hidden in the shaft right behind the prop (it has 0.01 mass scale and 0.2,0.2,0.05 physical scale). But I don't know how exactly this happens. If I take the engine out and put it on freshly build plane it flies normally until the fuel runs out. Any ideas?
p.s. press 1 to start the engines.
@ColonelStriker thanks for suggestions. It isn't related to nozzles for it happens even with nozzles removed completely. And I can't imagine how lack of pitching can lead to this behavior
Aside from the mentioned CoM shift, my theory is the effect is related to the lack of pitching down if 100mph or above is achieved and pitching up if under 100mph is maintained.
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Another is the vector of the nozzle. It could have an effect on the moment of inertia or some other bits
@jamesPLANESii thank you! :)
Yeah, but what, and how? And the strangest thing to me is that it happens suddenly in the middle of the flight. I tested with different fuel capacities, and with nozzles removed. The bug disappears only if the engine doesn't work at all (assigned to a different activation group).
This bug is incredibly weird.
Ring ring @AndrewGarrison
Nice plane BTW.
Just tested it. Hmm. It seems to behave like it’s becoming negative mass... weird.
Maybe the weight loss by the fuel is causing the CoM to shift behind the CoL...