→Why even have the OMS?: new section
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==Could reverse the redirect== |
==Could reverse the redirect== |
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[[Criticism_of_the_Space_Shuttle_program#Costs]] says "The toxic propellants used for the OMS/RCS thrusters required special handling, during which time no other activities could be performed in areas sharing the same ventilation system. This increased turn-around time" - [[User:Rod57|Rod57]] ([[User talk:Rod57|talk]]) 22:26, 16 April 2017 (UTC) |
[[Criticism_of_the_Space_Shuttle_program#Costs]] says "The toxic propellants used for the OMS/RCS thrusters required special handling, during which time no other activities could be performed in areas sharing the same ventilation system. This increased turn-around time" - [[User:Rod57|Rod57]] ([[User talk:Rod57|talk]]) 22:26, 16 April 2017 (UTC) |
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== External links modified == |
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*Added archive https://web.archive.org/web/20100113042044/http://astronautix.com/engines/ome.htm to http://www.astronautix.com/engines/ome.htm |
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== Requested move 22 January 2020 == |
== Requested move 22 January 2020 == |
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== Why even have the OMS? == |
== Why even have the OMS? == |
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I feel this article should |
I feel this article should answer the question of why there was even a need to fit a separate OMS instead of using the main engines to perform its functions.--[[User:Cancun|Cancun]] ([[User talk:Cancun|talk]]) 11:50, 9 August 2020 (UTC) |
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: eg. Main engines had no propellant after the External Tank was jettisoned. - [[User:Rod57|Rod57]] ([[User talk:Rod57|talk]]) 12:39, 27 September 2020 (UTC) |
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== "Orbital maneuvering system" listed at [[Wikipedia:Redirects for discussion|Redirects for discussion]] == |
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[[File:Information.svg|30px]] |
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A discussion is taking place to address the redirect [[:Orbital maneuvering system]]. The discussion will occur at [[Wikipedia:Redirects for discussion/Log/2020 September 2#Orbital maneuvering system]] until a consensus is reached, and readers of this page are welcome to contribute to the discussion. <!-- from Template:RFDNote --> [[User:Soumya-8974|Soumya-8974]] <sup>[[User talk:Soumya-8974|talk]]</sup> <sub>[[Special:Contributions/Soumya-8974|contribs]]</sub> <sup>[[Special:PrefixIndex/User:Soumya-8974|subpages]]</sup> 13:51, 2 September 2020 (UTC) |
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== Other things to add == |
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Other things to add - eg ref the OMS workbook : |
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* propellants could be cross-fed between OMS pods |
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* OMS propellant could feed the RCS |
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* OMS pods had separate He tanks for the OMS and RCS systems |
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* OMS pods had N2 tanks, for post-firing engine purge, (and maybe other things) |
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* OMS engines could not be used under 70,000 ft (or nozzles might collapse) |
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* OMS engines could gimbal (and had two redundant sets of gimbaling actuators) |
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* - [[User:Rod57|Rod57]] ([[User talk:Rod57|talk]]) 23:13, 26 September 2021 (UTC) |
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This should be redirected in the opposite direction. There is no reason for caps. Ksnow 09:33, 7 July 2006 (UTC)Ksnow[reply]
Criticism_of_the_Space_Shuttle_program#Costs says "The toxic propellants used for the OMS/RCS thrusters required special handling, during which time no other activities could be performed in areas sharing the same ventilation system. This increased turn-around time" - Rod57 (talk) 22:26, 16 April 2017 (UTC)[reply]
The result of the move request was: not moved to the proposed title at this time, per the discussion below. Dekimasuよ! 15:51, 30 January 2020 (UTC)[reply]
Space Shuttle Orbital Maneuvering System → Orbital Maneuvering System – Unnecessary disambiguation, as "Orbital Maneuvering System" is enough and more widely used than "Space Shuttle Orbital Maneuvering System". Requesting to withdraw the nomination because of the unanimous opposition. Soumyabrata (talk • subpages) 17:52, 22 January 2020 (UTC)[reply]
The figures, despite from seemingly reliable sources, don't add up.
Isp of 316 s | ve of 3100 m/s | ve = Isp*g0 |
dv | 300 m/s | |
Orbiter dry mass | 78,000 kg | |
Orbiter wet mass, or gross take-off weight | 100-110,000 kg | depending on source |
OMS fuel capacity | 21,660 kg | |
Payload | 29,500 kg |
This means:
wet mass | 129,000 kg | dry mass + payload + fuel |
dry mass | 59,000 kg | wet mass - payload - fuel |
dv | 565-750 m/s | dv = Isp * g0 * ln(m0/(m0-fuel)), for m0=129 and 100 tons, respectively |
What am I missing?
Andersenman (talk) 13:19, 4 February 2020 (UTC)[reply]
I feel this article should answer the question of why there was even a need to fit a separate OMS instead of using the main engines to perform its functions.--Cancun (talk) 11:50, 9 August 2020 (UTC)[reply]
A discussion is taking place to address the redirect Orbital maneuvering system. The discussion will occur at Wikipedia:Redirects for discussion/Log/2020 September 2#Orbital maneuvering system until a consensus is reached, and readers of this page are welcome to contribute to the discussion. Soumya-8974 talk contribs subpages 13:51, 2 September 2020 (UTC)[reply]
Other things to add - eg ref the OMS workbook :