![]() I moved the rear landing gear forward and outboard from the engines to wing connector (closer to the CoM), and removed the ones from the wings. I ditched about 1/4 to 1/3 of the oxidizer the RAPIERS were carrying. So I tried a few tweaks if you want to give something similar a try. When it's time to ignite the rockets, all that trust makes it buck like a bronco because your CoM is above the Center of Thrust. Your plane is so neutrally stable that when you burn off fuel, the CoM shifts back and up (behind your CoL but that doesn't matter in space). I'm guessing it's because you have the tail fins, ladder, and parachutes on and your CoM is so far back. ![]() My airplane wanted very badly to pitch up. Now you just have to play out orbital mechanics as for a rocket. Soon after, switch RAPIER's mode and go full throttle. Your pitch is already high enough for the aerospike to put you in the right direction, and throttling down allows the RAPIERS to air breath a bit longer. Around 20k (when the RAPIERS start to go asymmetric), you can throttle back and hit ignite the aerospike. I found my pitch to be around 30 degrees with the prograde at 5 to 10 degrees. So if this is what you're running into, try climbing out very shallow until you can get high enough to get some speed. If I tried to fight and hold a specific pitch angle, or tried to climb too aggressively, the nose eventually fell and stalled out. If I get the nose way up then let it droop, the airplane caught itself and climbed out slowly. I had to wait till I ran off the end of the runway, but it flew. I noticed this thing is a beast to takeoff. I gotta ask: Are you flying SAS on or SAS off? SAS off it sure wants to pitch down. Unless you have RCS/monopro hidden in there somewhere. I don't know if that's what you did, but if you're going to use the RAPIER in air breather mode, you don't need excess oxidizer. ![]() The only way I could get that much weight was by using all fuel/oxidizer tanks. I also noticed you said it "flat stall" and not "flat spin" so I will address the "stall."īy the way, I love the way the wings look. I was a bit thrown off because you said the mass is 28.802 and the picture shows 25.802 so I tried to match both of those weights with the CoM and CoL picture you put up. Since it's hard to see everything in your pictures, I spent a little time trying to replicate your ship.
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