Tutorial: Recovering Rocket Stages

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Revision as of 11:36, 13 November 2015 by S1gmoid (talk | contribs) (Added mention of the StageRecovery mod)
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The Space Shuttle and Falcon 9 v1.1 are examples of reusable or partially reusable rockets in the real world. This tutorial will explain how to recover a spent stage so you can get those extra funds!
Recovering the spent stage


Specifications

  • Length: 30 minutes - 1 hour
  • Difficulty: Medium
  • Skills needed: Getting to Orbit, Orbital Adjustments
  • For Version: Most versions since 0.20, tested in 0.90 Beta

The Problem

Many users have attached parachutes to their spent stages in the hope that it will parachute gently back to the planet. Unfortunately, this isn't the case. The game will automatically destroy any spacecraft that moves more than 2.5 kilometers away from your vehicle in the atmosphere. Thus, without mods, this feat is next to impossible to perform. The secret is to leave the atmosphere before releasing your spent stage so it isn't removed.

(If you are okay with mods, the StageRecovery mod was created for this purpose, it will automate recovery of unloaded stages.)

Ship Design

  • The first stage of your spacecraft will be expendable (not reusable) because it will be separated too low in the atmosphere. I recommend using an RT-10 Solid Fuel Booster as the first stage because it is very cheap.

Note: In the staging sequence, where the second stage separates from the orbital stage, make sure to also deploy the second stage radial parachutes, because you won't be able to do this on the way back!

Launch Sequence

  1. Launch normally, expending your first stage when it runs out of fuel.
  2. Ignite your second stage. Push your apoapsis as high as possible, preferably about 160 kilometers.
  3. When fuel runs out in the second stage, separate the orbital stage. Don't ignite it unless you need to push your orbit higher!
  4. Go to the tracking station and control the second stage as it falls back to Kerbin.
  5. Right when the second stage touches the water or land, press "Recover Vessel".
  6. Now switch back to your orbital stage. HURRY! Circularize your orbit and do science!
  7. When you are done with science, deorbit. Try to land near the KSC for extra money!