X-8 High Altitude Propulsion Flight Test
by Raptor9
uploaded 2015-12-02
(updated 2019-06-16)
stock aircraft
#XF-108 #X-Plane #Crewed #Reusable

The X-8 was built to test different propulsion configurations at high speeds and altitudes, including the J-X4 Turbo-Ramjet and the CR-7 R.A.P.I.E.R. combined-cycle engine. It was designed to have modular payload and engine mounts, allowing ground crews to easily configure the aircraft for different missions or experiments.

Action Groups:
[1] Toggles Afterburners
[3] Toggles Engines
[4] Toggles Cockpit Lights
[ABORT] Cuts Drogue Chute

NOTE: I purposely avoided mounting any parts to the yellow-highlighted areas of this craft. This allows very quick part swaps for different payloads or engine/fuel tank combinations. When changing out components, be mindful of where the Center-of-Mass is in relation to the main landing gear. You may need to slide the main landing gear forward or back to maintain proper relative positioning.

Built in the SPH in KSP version 1.7.2.


  • Type: SPH
  • Class: aircraft
  • Part Count: 53
  • Pure Stock

If you like what you downloaded, and want to share screenshots or stories of success, glory, or failure, feel free to comment in my craft catalog thread on the KSP Forums -Raptor9

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