4
$\begingroup$

I'm writing an essay titled the Physics of a Shuttle Mission, which is broken down into the journey into orbit, orbital maneuvering and re-entry.

The biggest problem at the moment is with example calculations. For example the delta v required for OMS-1 and OMS-2. This is because it seems impossible to find info on the Shuttle's velocities and altitudes beyond about T plus 8min. And I believe that OMS-1 occurs at around T plus 10min 30 sec.

Does anyone have any specific numerical data on OMS-1 and OMS-2? Or could point me to a place that has this information.

$\endgroup$
  • $\begingroup$ You want to know delta V for OMS-1 and -2? FYI, most flights did not perform OMS-1. $\endgroup$ – Organic Marble Sep 2 '16 at 14:17
  • $\begingroup$ I understand that most shuttle flights did not perform OMS-1, but surely there has to be some sort of generic data on the velocities and altitudes involved with these maneuvers? $\endgroup$ – Darth Vader Sep 2 '16 at 14:22
  • $\begingroup$ OK, answered below. $\endgroup$ – Organic Marble Sep 2 '16 at 14:26
5
$\begingroup$

The Delta-V for most OMS 1 & 2 burns performed during the Space Shuttle program is available in the ever-useful Space Shuttle Missions Summary document in the LAUNCH SITE LIFTOFF TIME column.

For example, here is the data for STS-135. Planned and actual.

enter image description here

Edit: just noticed you asked about altitude as well. The altitude at OMS-2 burn isn't explicitly called out in that document, but it does give the orbital altitudes for post OMS-2. Since OMS-2 was a perigee raising burn, and was performed at apogee, you can use the apogee number for "post OMS 2" as a close approximation. For STS-135 this was 124.3 nm.

| improve this answer | |
$\endgroup$
  • $\begingroup$ One question on the units used for Velocity, is FPS feet per second? $\endgroup$ – Darth Vader Sep 2 '16 at 14:49
  • 1
    $\begingroup$ That's correct. $\endgroup$ – Organic Marble Sep 2 '16 at 14:55

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.