![]() I personally click on my rockets and set the thrust limiter before launch to get the 1.25 on exactly every flight. You can do whatever TWR you want but be consistent at first. I do a 5 degree pitch at 75m/s (You can go out of the prograde vecotor to do that because you are not going fast enough to flip out.) After that I follow the center of the prograde vector as needed to flip to mostly horizontal by 30k altitude. ![]() I personally go for a starting TWR of 1.25. General rule of thumb with FAR is to launch with a Thrust to Weight ratio of about 1.4 and to keep it below 2.0 inside the atmosphere Keep inside the circle until at least 30K altitude and then deviate slowly at first. If you deviate too much from your prograde vector you will flip out. General rule of thumb with FAR is to launch with a Thrust to Weight ratio of about 1.4 and to keep it below 2.0 inside the atmosphere Edited Maby Crzyrndm Less stable vessels won't even manage that much, more stable can manage 15-20+ degrees of deviation ![]() General rule of thumb with FAR is that you want to keep your heading vector inside the prograde vector while in the lower atmosphere. Aerodynamic forces need to be capable of correcting any minor deviations caused by this instability. This can be caused by the center of mass shifting backwards, staging events significantly changing the aerodynamic profile of your vessel, changes in orientation relative to the forward velocity of your vessel, or changes in the aerodynamic regime you are flying though (subsonic, trans-sonic, super-sonic, and hyper-sonic)ġ) Add fins to the back end of your vessel to shift the center of pressure backwards in a wider range of orientationsĢ) Keep the direction your vessel is facing closer to the direction of travel to reduce aerodynamic instabilityģ) Reduce thrust (pushing is not a stable method of applying force. Flipping upside down would indicate that the center of aerodynamic pressure has shifted infront of the center of mass.
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