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Goodbye, D1R --- Off to Russia

Discussion in 'DIRECTV Tips and Resources' started by Gary Toma, May 10, 2012.

  1. Gary Toma

    Gary Toma UNIX DBSTalk Club

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    Below is just a snippet of the DIRECTV filing May 8,2012, to de-orbit Satellite D1R.

    Compete data is available at
    http://licensing.fcc.gov/cgi-bin/ws...&acct=624514&id_form_num=9&filing_key=-242134




    5. Type Request
    [​IMG] Change Station Location [​IMG] Extend Expiration Date [​IMG] Other

    6. Temporary Orbit Location

    109.8 W.L.
    7. Requested Extended Expiration Date

    2012-07-08 00:00:00.0
    8. Description DIRECTV Enterprises, LLC hereby requests an extension of its STA for up to sixty days to (1) continue to stationkeep the DIRECTV 1R spacecraft at 109.8 W.L. and then (2) de-orbit the spacecraft, and to preform TT&C operations during these maneuvers.
     
  2. HoTat2

    HoTat2 Hall Of Fame

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    Yep, the old gal served us well. Thanks for the memories. :)

    Guess DIRECTV changed their mind about using it's remaining lifetime as an in orbit spare for D5 at 110 ...

    Funny how they still keep referring to it as "de-orbit" as though they're bringing it down into the earth's atmosphere for a burn up or something. What it really means is to be moved out of the Clarke Belt into a higher disposal or "graveyard" orbit after having all its internal systems shutdown and/or "safed."
     
  3. CCarncross

    CCarncross Hall Of Fame

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    Don't forget that they are de-orbiting it from Geo-synchronous orbit...so its accurate. I know we imagine it as Sputnik crashing to earth.
     
  4. P Smith

    P Smith Mr. FixAnything

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    Scanning 110W frequencies ...

    I see all three DTV tpns 28/30/32 (virtual 8/10/12) are modulated and alive.

    Only tp8 has normal mux with channels and system info.

    These tpns what are without info are 8PSK Turbo.
     

    Attached Files:

  5. LameLefty

    LameLefty I used to be a rocket scientist

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    Yep. I posted about it yesterday afternoon. Thirteen years is a pretty good run, all things considered.

    http://www.dbstalk.com/showthread.php?p=3014399#post3014399
     
  6. Gary Toma

    Gary Toma UNIX DBSTalk Club

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    Here's the FCC Narrative of 8/17/12, attached.

    Appears D1R is now going into Russian service!
     
  7. trh

    trh This Space for Sale

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    I didn't realize the satellites had that much fuel onboard. It started at 101W, then moved to 72.5W then moved to 110W and now to 56E before it will be sent to a disposal orbit.
     
  8. P Smith

    P Smith Mr. FixAnything

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    It will travel long way to 56.16° E.
     
  9. tuff bob

    tuff bob Icon

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    Nice bit of unexpected bonus cash for DirecTV you'd have to think
     
  10. Racer88

    Racer88 Icon

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    Wow, it's like an outer space Timex commercial. It just keeps on ticking.

    The little satellite that could...
     
  11. HoTat2

    HoTat2 Hall Of Fame

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    Probably doesn't have that much fuel left, as its destined to use a fuel saving inclined geosynchronous orbit like Bonum I is already using for this last 1+ year mission.

    Related:

    Notice of DIRECTV STA application to use their [STRIKE]East Coast Uplink facility (ECUF)

    See here http://www.dbstalk.com/showthread.php?p=3043361#post3043361[/STRIKE]

    Correction, rechecked the coordinates in the application and its the Castle Rock Uplink/broadcast facility, not the ECUF for TT&C backup of IntelSat's primary facilities for the initial transfer as far as 52 degrees EL.

    http://licensing.fcc.gov/myibfs/download.do?attachment_key=963875
     
  12. fleckrj

    fleckrj Icon

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    Yes, but it is not like the satellite is using its own fuel to move half way around the world. All it has to do to get there is to go to a higher orbit, wait for the earth's rotation to move under the satellite, and then fall back to a geosyncronous orbit at 56.16° E. I realize that I oversimplify what it takes to park it exactly where it is wanted, but the process does not need to utilize a lot of fuel. It is a matter of short bursts at precise times.
     
  13. P Smith

    P Smith Mr. FixAnything

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    Then you shouldn't quote me - I know how the maneuver executing (yes there more interesting stage at the end, like a fly over and get back - see my posts when D12 or D11 traveled) and I didn't mention fuel at all.
     
  14. Sixto

    Sixto Well-Known Member

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    The latest on D1R (8/24/2012):
    "DIRECTV hereby amends its application for authority to operate DIRECTV 1R at 56.16 E.L. to reflect updated information on its relocation and associated effect on remaining life of the satellite."

    http://licensing.fcc.gov/myibfs/download.do?attachment_key=964540

    "In its original application, DIRECTV indicated its expectation that the satellite would be drifted to 56.16º E.L. such that it would be in place to begin commercial operation on or about January 15, 2013. That schedule has now been accelerated slightly. The new plan calls for the satellite to reach its new orbital location on or about December 22, 2012, and to begin commercial operations on January 1, 2013. In addition, the faster drift rate will consume approximately 2 kg more fuel, which will reduce the estimated remaining useful life of the spacecraft. Based on the amount of fuel remaining after relocation to the 56.16° E.L. orbital location, assuming inclined orbit operations and reserving sufficient remainder to achieve a disposal orbit approximately 300 km above geosynchronous altitude, DIRECTV currently estimates that the satellite will have a remaining useful life of approximately 3.5 years, rather than 4.5 years as originally estimated."​
     
  15. P Smith

    P Smith Mr. FixAnything

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    Interesting math: 2 kg of fuel equal 1 year of life for inclined GSO.
    Simple extrapolation: for 15 years of 'easy' life the sat should spend 300 kg (0.3 tonne) of fuel.
    Now what would be amount if the sat must stay in a 'box' ?
     
  16. HoTat2

    HoTat2 Hall Of Fame

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    "Second Minor Amendment" to D1R filed on 9/13/2012:

    http://licensing.fcc.gov/myibfs/download.do?attachment_key=966099

    Schedule S is in an MS database format.

    SECOND MINOR AMENDMENT TO DIRECTV 1R APPLICATION

     

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