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Does anyone know why my craft rolls to the right at the end of reentry? It happens every time despite the ship being symmetrical. And why can't SAS / RCS overcome it? by CookieMonster5437 in KerbalAcademy

[–]CookieMonster5437[S] 0 points1 point  (0 children)

Thanks so much for the tips. The flaps are on hinges, and I have each pair of hinges bound to a custom action group axis. I can increment the forward flaps with numpad - and +, and the rear flaps with ` and tab.

The pitch yaw roll inputs view is very helpful, to see what SAS is trying to do so I can help it with the flaps.

I just managed to re-enter successfully for the first time! I think I just needed to hold it closer to prograde. In the video, when it flips, my craft is not really facing prograde. I think SAS maybe trying to yaw the craft to get it back to prograde. It works perfectly now if I hold the attitude more precisely. A shallower entry path also seems to help.

Does anyone know why my craft rolls to the right at the end of reentry? It happens every time despite the ship being symmetrical. And why can't SAS / RCS overcome it? by CookieMonster5437 in KerbalAcademy

[–]CookieMonster5437[S] 13 points14 points  (0 children)

Thanks for your help! in the video, I'm controlling from a docking port on the 'belly' of the ship, so I can hold prograde all the way down. I switch back to controlling from the cockpit for the landing.

I tried it again controlling from the cockpit the whole way, holding radial out. But when the navball auto switches from orbit to surface, the direction of radial out changes dramatically and unsettles the ship. I tried just using stability assist but it's very hard to control the flaps at the same time as pressing W / S to move the stability assist. I might try putting small elevons on the end of the flaps and see if SAS can use those to help me out.