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Flying the Shuttle - Launch And Post Insertion Advanced: Difference between revisions
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Flying the Shuttle - Launch And Post Insertion Advanced (view source)
Revision as of 14:16, 16 March 2024
, 16 MarchClarifications
SpacegearGuy (talk | contribs) m (Added 1 note.) |
SpacegearGuy (talk | contribs) m (Clarifications) |
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Trim angle (in yaw mainly) allow good gimbals of the OMS. Resultant trust forces will be parallels to the X bodys axis,containing the Center of Gravity (for a 2 engines burn) | Trim angle (in yaw mainly) allow good gimbals of the OMS. Resultant trust forces will be parallels to the X bodys axis,containing the Center of Gravity (for a 2 engines burn) | ||
Then, we have to decide in item 10 the time of the burn. We gonna do it at next apogee, 20 mn from now (TTA) | Then, we have to decide in item 10 the time of the burn. We gonna do it at next apogee, 20 mn from now in this case (TTA) | ||
MET is now 34mn06sec, so we want the ignition to be at 20+34=54 mn into the mission. | |||
For that, '''item 10+00+00+54+00 EXE''' | MET is now 34mn06sec, so we want the ignition to be at 20+34=54 mn (MET+TTA) into the mission. | ||
For that, '''item 10+00+00+54+00 EXE''' (Days,Hours,Minutes,Seconds) | |||
Then, how much thrust will we add? We want to raise the orbit to a new apogee of 150 Nm ( ''Heads up: 2ft/sec equal in a raise of 1Nm of the orbit height'') | Then, how much thrust will we add? We want to raise the orbit to a new apogee of 150 Nm ( ''Heads up: 2ft/sec equal in a raise of 1Nm of the orbit height'') | ||