KerbalX

Fly with prograde hold set when shooting for orbit. Action group one deploys flaps that push the nose down slightly. Use these to control initial climb - deploy them when nose rises so much the craft is decelerating, retract them when airspeed starts trending up, this will damp down the post takeoff oscillations and get you into a steady climb.

At about 8-9km, it will begin to level off and exceed 250 all by itself. Push the nose down with action group one again till safely supersonic (400 m/s) and if you want, use AG 2 and 3 to get a boost from the rocket.

At this point its best to retract nose down flaps until you’re climbing again , the longer you try to hold it down in the lower atmosphere the bigger the porpoise manoeuvre that eventually results.

Try to keep her level at 14km-ish for the speed run. Above 600ms it tends to want to climb above this level even with nose down trim set, but eventually it will get over 750 m/s.

Once you reach 750, press Space Bar to start the rockets and remove all nose down trim - stay prograde. For extra style marks, set her back to Surface mode at 35km so you stay in min drag orientation.

Details

• Type: SPH
• Class: spaceplane
• Part Count: 83
• Pure Stock