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Solar-B Launch Operations Scenarios

Solar-B Launch Operations Scenarios. ISAS/JAXA Solar-B project Prepared by T. Shimizu For Wallops face-to-face meeting. Launch operation. Solar-B will be launched from USC (Kagoshima Uchinoura Space Center, Japan). Launch window: 21:32:46-21:41:04 UT

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Solar-B Launch Operations Scenarios

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  1. Solar-B Launch Operations Scenarios ISAS/JAXA Solar-B project Prepared by T. Shimizu For Wallops face-to-face meeting

  2. Launch operation

  3. Solar-B will be launched from USC (Kagoshima Uchinoura Space Center, Japan). Launch window: 21:32:46-21:41:04 UT in 23 August 2006 to 26 September 2006. The initial orbit to be installed by a M-V rocket is as follows: W: longitude of ascending (north-bound) node, which defines at what longitude Solar-B crosses the earth equator

  4. 3-stage engine burn out Satellite separation Sun Start rate dumping and search sun Complete sun acquisition by Complete SAP deployment Start SAP deployment

  5. Times given here are not final Launch case: 23 Aug 2006 Visible window S/C Events Actions at station Station (UT) JAXA USC X=21:32:46 Lift off ~21:40 21:41:16 Satellite separation 21:44:01 Start attitude RSA control mode (rate dumping and search the sun) (RSA= RCS sun acquisition mode) JAXA PER 21:49-21:56 Check orbit and status Complete sun acquisition (Attitude directed to sun) 22:06:01 Start deployment of solar array paddle (SAP) 22:09:23 Resume attitude RSA control mode 22:12 Complete sun acquisition (Attitude directed to sun) JAXA AGO Confirm SAP deployment, sun acquisition, power supply SHNT mode 22:18-22:27 If off-nominal cases, may perform a recovery/trouble-shooting procedure Note: AGO (U.Chili) measures El/Az NASA WPS Confirm sun acquisition mode, power supply SHNT mode 22:37-22:46 If off-nominal cases, may perform a recovery/trouble-shooting procedure Backup for AGO Rev.0 23:47:46 Fine sun sensors (UFSS) & Star tracker (STT) ON 23:47:49 Enable telescopes’ survival heaters JAXA AGO 23:50-23:59 Confirm UFSS/STT ON, telescopes’ survival heaters If off-nominal cases, may perform a recovery/trouble-shooting procedure

  6. Solar-B Battery In case that the solar array paddle is not deployed, the battery can supply the power for 160 min.

  7. Orbit maneuvers for sun-sync. polar orbit

  8. Solar-B will be finally installed to the sun-synchronous polar orbit with maneuver operation in the next page.

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