Sarnus S1-B MEM AS-204
by gc1ceo
uploaded 2017-07-22
(updated 2018-06-01)
mod ship
#sarnus #saturn #sina #lem #mem


  • Type: VAB
  • Class: ship
  • Part Count: 45
  • Mods: 2


  • Bluedog DB
  • Squad (stock)

The Lunar Excursion Module (LEM), later formally renamed to the Apollo Lunar Module, ran into considerable problems during the design and testing phases. The result was that the entire LM program was delayed by ten months. One of the few bright sides to the Apollo 1 tragedy was it gave engineers additional time to finish the LM and it was test launched on the unmanned Apollo 5 mission in early 1968 which was launched on-board the Saturn I-B which would later be used for the first manned mission, Apollo 7.

This is an approximation of the Apollo 5 mission launched by the Sarnus S1-B with additional parts added so that the entire mission can be controlled remotely. However given differences from real life this mission has much greater potential then Apollo 5 and allows for a number of different missions. The first would be simulating the actual Apollo 5 mission in LKO (Low Kerbin Orbit) decoupling the Sina MEM and practicing with both its stages – firstly the descent stage followed by decoupling and using the ascent stage. Unless you bring your perigee below 69km then be warned that the descent stage will be left as orbital debris. The second stage of the Sarnus S1-B will also likely left as orbital debris as well.

if you wish to take things further you can use this to practice rendezvous and docking with my other Sarnus S1-B build which simulates aspects of Apollo 7. This can be useful if you want the practice before committing yourself to a full Apollo 10-17 mission suite. You could also leave the MEM connected to its second stage while docked with a CSM and practice highly elliptical burns in preparation for a future mission involving a TMI (Trans Munar Injection) burn although you may not have quite enough dV to reach the Mun so attempting a munar flyby with both MEM and CSM together isn’t recommended. However there is more than enough fuel for munar flybys with just the MEM with more than enough fuel in the MEM for munar orbit missions.

The Sarnus S-1B lifter is pretty simple, compared to its larger Sarnus V counterpart, with the first stage bringing you into the upper atmosphere and after which the second stage handles the rest of the ascent and the circularization. The fairing adapter is a bit different from missions involving the Kane CSM but operates in a similar petal fashion with a separate small decoupler separating the payload from its housing.

Built in the VAB in KSP version 1.4.3.

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