Ed Davies wrote: > > I notice T+02:14 Start OMS Assist and T+03:37 End OMS Assist so the OMS > is used during the ascent. Whether this is the OMS-1 burn or if that > still exists for contingencies later in the ascent I don't know. > No. This is simply OMS Assist (=to augment thrust of SSME slightly with heavy cargo on high inclination trajectories). OMS-1 was used in the early flights only, after ET separation (ie. some 10 minutes after lift-off). I am not sure, but my theory is, that this maneuver was used because (due to security reasons) the trajectory immediately after MECO was with very low perigee (and apogee too? - I am on travel and have no information at hand) to securing early decay of ET over Indian ocean. This OMS-1 is not incorporated in planning at all now. The OMS-2 burn was always at the first apogee, and this designation is kept inspite deleting the OMS-1. -- Mgr. Antonin Vitek, CSc. Office: Main Library, Academy of Sciences of the Czech Republic Narodni 3, CZ-11522 Praha 1 - Phone: +420(2)21403255, fax +420(2)24240611 Home: Kytin 127, CZ-25210 Mnisek p. B., Czech Republic Phone: +420(305)592865 - Coord.: 14.2194 deg E, 49.8488 deg N, 442 m ASL My satellite home page: http://www.lib.cas.cz/www/space.40/index.html FOR SENDING VOLUMINOUS APPENDED FILES (greater than 250 KB) USE ALTERNATE ADDDRESS: mailto:vitek1@lib.cas.cz ----------------------------------------------------------------- Unsubscribe from SeeSat-L by sending a message with 'unsubscribe' in the SUBJECT to SeeSat-L-request@lists.satellite.eu.org http://www2.satellite.eu.org/sat/seesat/seesatindex.html
This archive was generated by hypermail 2b29 : Fri May 31 2002 - 00:29:09 EDT