Search the Community

Hello guys. I have a simple question: I'm trying to understand the requirements I have to reach to make a suborbital flight with tourists and vips successfully achieved. I have created a vessel that is fully capable to bring 5 people at a stable orbit and come back safe to Kerbin, fully equipped with solar panels and experimental stuffs, using both BACC and LV-45 engines. The vessel can easily go up through suborbital trajectory first, and then circularizing and making it orbital at an AP/PE height between 90 and 110km. I don't understand why I'm not able to achieve the green flags of tourists and vips mission that want to go suborbital and then orbital. I'm trying to bring up to space 2 tourists and 1 VIP right now but I can't complete the mission. I feel like they don't "see" I'm passing through a parabolic flying trajectory to reach a suborbital trajectory. And I don't understand why they don't see it. I have read several topics about the suborbital flight on KSP, so I understood I have to: 1) Bring AP above 70km 2) Keep PE below 70km If these are the only two requirements, I don't understand why I can't have green flags for the suborbital flight in the tourist and vip missions, because I fulfill these 2 requirements very easily with my vessel. So I kept reading around in some threads and I also understood: 3) Maybe having no acceleration while passing 70km of height with the vessel? I mean, keeping a constant speed adjysting it with an engine like the LV-45? 4) Maybe having a particular eccentricity (not too high or too low, so keeping the trajectory not too straight up in the sky or not too flat)? 5) Maybe passing the 70km height with a speed not too fast (I did dozens of tests with a velocity between the 500 and 1200 m/s)? 6) Maybe passing the 70km height with engines shut down? 7) Maybe passing the 70km height with the vessel lined up parallel to the terrain (pointed at the border between the blue and brown parts of the navball?) I tried for some days with little changes of these variables, reaching different speeds, or AP altitudes, or circularizing the suborbital trajectory, or keeping a specific heading while flying, etc etc... but only 1 time, and I don't know how I did it, I took the green flags for the suborbital flight, now I can't have it anymore. I think maybe I'm flying my vessel in the wrong way, but playing around with the variables I can manipulate (velocity, heading, acceleration, AP, PE, etc) doesn't give me any result. What I'm missing? What really are all the requirements for this missions to reach? What are their ranges to make someone achieve the green flag easily? Thank you to everyone for their help...