Author Topic: SLS: Higher payload without second stage  (Read 12921 times)

Offline envy887

  • Senior Member
  • *****
  • Posts: 2575
  • Liked: 1151
  • Likes Given: 729
Re: SLS: Higher payload without second stage
« Reply #80 on: 06/07/2017 02:10 PM »
Back on topic: With this 'no second stage' SLS, would the first stage then arrive in a stable orbit?

It wouldn't arrive in orbit at all. The RS-25's can't restart, so you can't do a circularisation burn. You'd need to add OMS engines to the core to perform the circularisation.

Restart isn't necessary to insert into a stable LEO, as it's straightforward to do a direct launch to orbit.

Offline Jim

  • Night Gator
  • Senior Member
  • *****
  • Posts: 31222
  • Cape Canaveral Spaceport
  • Liked: 9494
  • Likes Given: 298
Re: SLS: Higher payload without second stage
« Reply #81 on: 06/07/2017 03:30 PM »
Then there are core disposal issues then

Offline Patchouli

  • Senior Member
  • *****
  • Posts: 4190
  • Liked: 117
  • Likes Given: 208
Re: SLS: Higher payload without second stage
« Reply #82 on: 06/07/2017 05:56 PM »
Then there are core disposal issues then

If the payload is capable of doing a  circularisation burn then just set it up so the core comes down in the Indian Ocean like the Shuttle ET used to.
« Last Edit: 06/07/2017 05:56 PM by Patchouli »

Offline Jimmy_C

  • Member
  • Posts: 56
  • Liked: 12
  • Likes Given: 261
Re: SLS: Higher payload without second stage
« Reply #83 on: 06/08/2017 08:44 AM »
Then there are core disposal issues then

If the payload is capable of doing a  circularisation burn then just set it up so the core comes down in the Indian Ocean like the Shuttle ET used to.

Wouldn't that mean the "payload" is the second stage?

Offline Patchouli

  • Senior Member
  • *****
  • Posts: 4190
  • Liked: 117
  • Likes Given: 208
Re: SLS: Higher payload without second stage
« Reply #84 on: 06/16/2017 03:51 PM »


Wouldn't that mean the "payload" is the second stage?

Sorta but it pretty much just means means the payload would have a RCS/OMS system like the Russian ISS modules.
« Last Edit: 06/16/2017 03:51 PM by Patchouli »

Tags: SLS ICPS Orion