This is a spaceplane capable of going to simplespace(when the devs add it to simpleplanes) It's based off a few Spaceplanes i saw in KSp Landing speed is 180 Mph Takeoff speed is 240. AG1 for jet engines AG2 for 'rocket' engines. Only use rocket engines above 10,000 feet otherwise you go superesonic. Land and takeoff with jet engines. If you want to switch engine type: Idle throttle. Wait until the engines cools down. Deactivate the engine's group. Activate the other engine's group and continue with normal flight. Here is the video which I based this plane off of: https://www.youtube.com/watch?v=EVx4vjHHIxU Copy and paste that into your browser. Do you think it's a good replica?