Discard the engine and fuel tank by staging, leaving only the command pod with its heat shield and parachute. Now burn until the periapsis is around 30 km. Wait until the craft is at apoapsis and orient it for a de-orbit burn by aligning the level indicator on the navball with the chartreuse yellow retrograde marker. A stable orbit will be reached when both apoapsis and periapsis are above 70 km. The projected trajectory will begin to widen until the PE label appears on the other side of the planet. The apoapsis will begin to shift ahead aim to keep it roughly the same amount of time ahead by throttling up or down with Shift and Control. At 30 seconds before apoapsis, reignite the engine at full throttle with Z.
Let the rocket coast towards apoapsis after cutting off the engine.Īs the rocket approaches apoapsis, orient it once more to align with the prograde marker. In map view, hover the mouse over the "AP" label on the highest point of the trajectory to monitor the apoapsis height cut off the engine with X when it reaches 70 km (70,000 meters). Continue to watch the Navball and steer the rocket to keep it aligned it with prograde. Click the Navball toggle at the bottom of the screen to make it visible again. Hit the space bar to discard it and to activate the second stage. The fuel of the first stage will run out before 20km altitude. If craft nears the apoapsis too fast, which can be seen in a dropping time to apoapsis, it might be necessary to point “above” the prograde marker, away from the brown half. Follow it by keeping the level indicator within the circle of the prograde marker at all times especially while in the lower atmosphere, but at about 30km the reaction wheels should be able to compensate. On the Navball this can be observed as the Prograde marker dropping further down. While the rocket accelerates, gravity will bend the trajectory downwards. The heading ("HDG") on the Navball should now be 90 degrees.
When the rocket's speed reaches 100 m/s, start a gravity turn by pressing the D key until the rocket is pitched 10 degrees towards the East. Use the Navball to keep the level indicator centered on the blue hemisphere. Launch by hitting the space bar and keep the rocket pointed straight up until the vehicle's speed is 100 m/s. Switch back to the normal viewmode by hitting M to enjoy the Launch spectacle.Tilt the view so that you're looking straight down Kerbin's North pole, which will give a clear view of the trajectory arc towards the East and the Apoapsis label. Steps to Orbit and Back Launch Preparation In order to make sure the staging sequence is correct, see our guide on Rocket Staging. The rocket should preferably be liquid fueled with at least two stages. TT18-A Launch Stability Enhancers optional.
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