Chryslus II
by gc1ceo
uploaded 2016-11-23
(updated 2018-06-16)
mod probe
#pioneer #juno #chryslus


  • Type: VAB
  • Class: probe
  • Part Count: 19
  • Mods: 3


  • Bluedog DB
  • Squad (stock)
  • TweakableEverything

The PGM-19 Jupiter became America’s first nuclear-armed medium range ballistic missile in 1956 and were deployed up until 1961 by which point they had become outdated and were quietly retired. However the Jupiter-C prototype became the basis for the Juno I launch vehicle, a number of Jupiter rockets were used for biological test flights, and lastly the Juno II launcher was developed from the operational Jupiter rocket.

The Juno II had ten flights between 1958 and 1961 and served as an early light-medium lifter before being retired with its role taken over by the Thor/Delta and Agena rockets. It had a less than stellar record with only 4 successes, 1 partial failure, and 5 failures. However it was responsible for the early Pioneer 3 and 4 missions, as well as a number of the Explorer missions such as Explorer 7, 8 and 11.

The Chryslus II is Bluedog Design Bureau’s approximation of the Juno II as outfitted for the Pioneer ¾ missions. The first stage is liquid-fueled and should put the light payload into a stable parking orbit. The additional stages aren’t necessary unless your payload is meant for a Munar flyby or a much higher orbit. The second stage, a Vicenza-11 solid rocket pack, should get you into position for a flyby trajectory. It should be noted that given its imprecise nature it may take you several attempts to get into just the right position for that flyby.

The third and fourth stages may be optional for a basic flyby mission but could also be used to push the payload into a different trajectory, possibly into Munar orbit, or allow for a Munar impact mission. If you find yourself overshooting your flyby and ending up in orbit around Kerbol then you have recreated the Pioneer 4 mission.

Built in the VAB in KSP version 1.4.3.

swipe to switch images, tap to close