After some days of experimenting on how to make a aircraft fly in SR2 with my experience from SP I made this. Its service ceiling is 35,000m+ AGL/ASL (NOTE: 35,000m+ AGL/ASL is where u can fly with the highbypass engine atleast.) (NOTE: 35,000m+ is actually ASL as i was above water at that time and I think they both merge and also both merge at a certain altitude.)
above and on 40,000m+ its not controllable very much and also doesnt have a gyro to maintain controllablility and the picture where Ali base (desert base) is visible. It was taken at 59,000m+ AGL/ASL and still i need to add gyro. But the gyro doesnt like me lol. Enjoy this version until I upload another version with gyro that works atleast because i have no idea on how to use a darn gyro.
Ag1: engine
Ag2: scramjet.
Ag3: cargobay
Cargo bay currently in: RTG for power reason. Do not remove it. You can however add in some weight simulation stuff into the cargobay.
Solar panel: same as RTG but not in cargo bay. Those with Advanced arent 100% size match of width/height.
Takeoff speed: between 85m/s and 100m/s (takeoff speed is measured without the activation of scramjet.)