Author Topic: LIVE: GCOM-C/SLATS - H-IIA F37 , December 23, 2017 (01:26 UTC)  (Read 25525 times)

Offline ZachS09

Velocity is decreasing, which should be an indication that the third burn is taking place.
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Online Chris Bergin

And there goes SLATS! :)

Thanks again guys!

Offline William Graham

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SLATS has separated.

Online russianhalo117

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Separation and end of webcast.

Offline ZachS09

Second stage shutdown should have occurred a few seconds ago.

Separation of the SLATS satellite will occur momentarily.
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Offline William Graham

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Offline ZachS09

SLATS separation confirmed! The 37th H-IIA mission concludes with a success, increasing the launch vehicle's success rate to 97.29% (36 out of 37)!

Congrats to JAXA and MHI Launch Services!
Because the Falcon Heavy Test Flight was successful, it has inspired thousands of people to consider changing the future of space travel.

Online zubenelgenubi

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We should be in the third burn now, but oddly it doesn't seem to be showing on the graphic. Not sure if it isn't being covered, or if the flightplan has changed.
The commentary volume on the YouTube web cast JAXA channel seems to be turned WAY down.

I heard the calls, faintly, for burn start and end.

Volume UP for S/C deploy!

Followed by the immediate end of the commentary from mission control center.

They're promising video footage of the (second) satellite deploy.
« Last Edit: 12/23/2017 02:19 AM by zubenelgenubi »
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Offline ZachS09

As the webcast concludes for the night, I'll also sign off as well.

To all NSF members watching, merry Christmas and happy New Year!
Because the Falcon Heavy Test Flight was successful, it has inspired thousands of people to consider changing the future of space travel.

Offline ZachS09

Now showing a replay of SLATS separation from a forward-facing camera on the second stage.
Because the Falcon Heavy Test Flight was successful, it has inspired thousands of people to consider changing the future of space travel.

Offline William Graham

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And there's the replay of SLATS separation

Offline William Graham

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That's all folks!

Congratulations to MHI and JAXA on another successful launch.

Offline Bubbinski

Congratulations to JAXA for successfully launching the Shikisai global change monitor and the SLATS low altitude experimental satellite! I thought the webcast had some cool animations and features about Shikisai’s science as well, though my Japanese is non existent so I couldn’t follow along as well as a Japanese speaker could. (I did appreciate the snippets in English though and the graphics were easy to understand).
I'll even excitedly look forward to "flags and footprints" and suborbital missions. Just fly...somewhere.

Online Steven Pietrobon

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Congratulations to MHI Launch Services and JAXA for the successful launch! Special thanks to Yoichi, Zach and William for their coverage.
Akin's Laws of Spacecraft Design #1:  Engineering is done with numbers.  Analysis without numbers is only an opinion.

Offline yoichi

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http://global.jaxa.jp/projects/sat/gcom_c/topics.html#topics11204

Dec. 23, 2017 Updated
SHIKISAI Solar Array Deployment – Images
The reception of telemetry data from JAXA's SHIKISAI satellite was made at 10:44 a.m. at the JAXA Mingenew Station, Australia, confirming SHIKISAI’s solar array deployment above Australia.

Offline yoichi

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http://global.jaxa.jp/press/2017/12/20171223_tsubame.html

Super Low Altitude Test Satellite "TSUBAME" (SLATS), Current Status

Approximately at 12:54 p.m. (Japan Standard Time, JST), the JAXA Santiago Ground Station, Chile received the signals from TSUBAME (SLATS; Super Low Altitude Satellite), launched from the JAXA Tanegashima Space Center earlier at 10:26:22 a.m. (JST), December 23, 2017. The signal reception confirms that the satellite’s solar array deployment and attitude control based on the onboard sun sensors have occurred as scheduled.

Offline input~2

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5 objects have been cataloged

Orbit for the first one:
2017-082A/43065 in 788 x 793 km x 98.7°

Offline yoichi

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http://global.jaxa.jp/press/2017/12/20171224_shikisai_tsubame.html

Completion of Critical Operations Phase, SHIKISAI and TSUBAME
December 24, 2017 (JST)

JAXA received telemetry data from SHIKISAI and TSUBAME, confirming that their satellite attitude control system had transitioned to the steady state. Current status of both satellites is stable.
 Subsequently, the following procedure occurred – power generation that supports the satellites’ operation by the deployed solar array wings, ground communications and sound attitude control that maintains those operations. Combined by the completion of the series of other operations, such as powering up of the bus and mission equipment, the satellites have entered the state where they can be sustained in orbit. This concludes their critical operations phase*¹.

SHIKISAI and TSUBAME will move on to the next operations phase*², where the functions of the satellites’ onboard apparatus will be examined approximately in the next three-month period.

JAXA conveys deep appreciation for the support by all for the satellites’ launch and tracking.

*¹ Critical operations phase: the phase that follows satellite’s separation from a launch vehicle, solar array deployment, and powering up of instruments for the satellite’s regular operations. The critical operations phase comes to an end at the start of the satellite’s control mode for nominal operation.

*² Next operations phase: during this phase, the entire satellite, its observation/mission sensors and other onboard equipment are scrutinized.

Offline Star One

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Congratulations to all concerned in this successful launch. Thanks also to those covering it for this site.

Offline yoichi

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