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Thread: Hybrids 2017

  1. #91
    Join Date
    23rd November 2013
    Posts
    1,901
    Very nice machine work.


  2. #92
    Join Date
    19th January 2009
    Posts
    733
    I'm wondering what people are doing with GSE. I read a thread discussing hybrid testing for TMT and one issue people mentioned is time at the pad. I never took all that long, connect fill line, connect igniter, continuity test. I'm just curious if there are gains to be had in that area.

    Another is fill time. It's not bad for 38/54 but I could see it being more significant the larger you get. Could using servo controlled plug valves work here? It would likely cost less than a similar sized solenoid valve. Larger diameter fill lines?

    Assuming some distance from the solid pads, is it dangerous to launch solids while waiting for hybrid fills?


  3. #93
    Join Date
    29th November 2009
    Location
    Fort Collins, CO
    Posts
    1,066
    Regarding fill lines and time, your bottleneck is typically the orifice drilled in the CGA-326 or CGA-660 fitting on your bottle. You can't get nitrous out of the tank faster than right there.

    Edward

  4. #94
    Join Date
    29th December 2011
    Posts
    1,578
    I've started what's going to be a long thread on THRP-1 in the Research subforum. I'm putting essentially all the details there, and why I made the choices I made.

    Gerald

  5. #95
    Join Date
    10th April 2009
    Location
    Auckland, NZ
    Posts
    1,487
    How do you get access to the research subforum?

  6. #96
    Join Date
    29th December 2011
    Posts
    1,578

  7. #97
    Join Date
    10th April 2009
    Location
    Auckland, NZ
    Posts
    1,487
    looks like ill have to get a green card first...

  8. #98
    Join Date
    29th November 2009
    Location
    Fort Collins, CO
    Posts
    1,066
    Kind of a hybrid - a tribrid tested this weekend.

    Click image for larger version. 

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    https://youtu.be/nmB3H9QWpnc

    https://youtu.be/vBCxGOFQf_o

    https://youtu.be/AdMBgwkuNhY

    Edward
    Last edited by AlphaHybrids; 13th March 2017 at 06:51 PM.

  9. #99
    Join Date
    29th November 2009
    Location
    Fort Collins, CO
    Posts
    1,066
    Another image of a tribrid. This one has a peak thrust of 400 pounds.

    Click image for larger version. 

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    Edward

  10. #100
    Join Date
    19th January 2009
    Posts
    733
    That's a great looking shot!

  11. #101
    Join Date
    29th December 2011
    Posts
    1,578
    Looks like it should be a poster... Nice!

  12. #102
    Join Date
    29th December 2011
    Posts
    1,578
    Edward,

    Is your test stand permanent, or do you transport it?

    Gerald

  13. #103
    Join Date
    29th November 2009
    Location
    Fort Collins, CO
    Posts
    1,066
    Gerald - March-ish through October-ish the stand is outside with ~2,000 lbs of bricks for counterweight. It also has stakes to help stabilize it. The winter months it goes to a small shed just to keep it out of the weather. The load cell is kept covered in the summer and removed in the winter.

    Edward

  14. #104
    Join Date
    29th December 2011
    Posts
    1,578
    Click image for larger version. 

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    THRP-1 motor is assembled, ready for static test this Saturday at Battle Park.

    Gerald

  15. #105
    Join Date
    18th January 2009
    Location
    ALABAMA
    Posts
    3,341
    That looks awesome! Looking forward to the report.

    "He who fights with monsters should look to it that he himself does not become a monster, and if you look long into an abyss, the abyss also looks into you." - Friedrich Nietzsche

    "The Future is Not Solid" - Korey Kline

    TRA# 08705 L3

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