An "R"-powered rocket build

Discussion in 'High Power Rocketry (HPR)' started by Rail Dawg, Nov 30, 2018.

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  1. May 22, 2019 #1681

    Ez2cDave

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    Chuck,

    If the Stratologger remains unavailable, I suggest taking a look at the Missileworks RRC3.

    Dave F.

    hurler-5.jpg
     
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  2. May 22, 2019 #1682

    Rail Dawg

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    I'll look into that. Fortunately we've got 2 Stratologger CR's available now should we be unable to get one from PerfectFlite.

    Thanks Dave!

    Chuck C.
     
  3. May 23, 2019 #1683

    levi seaton

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    When are you expecting that fin can. I’m anxious to see it
     
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  4. May 23, 2019 #1684

    Rail Dawg

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    Hey me too!

    Binder Design is doing outstanding work on this.

    I told Mike in the beginning to take his time and do it right... and he is. The thing isn't a small project that's for sure. And from Binder's updates he is putting a lot of effort into this.

    We expect to see the fin can at about the same time you produce one of the most awesome launch trailers in the country... the middle of June!

    Thanks Levi. I really appreciate your efforts for this rocket launch.

    Chuck C.
     
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  5. May 23, 2019 #1685

    levi seaton

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    Cool. I’m starting work on the trailer in the morning. I picked up some materials today that I didn’t already have. Some 1 7/8 roundstock for the pivot point of the tower. Also some parts for the outriggers. I’ll send you some pictures as it comes together
     
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  6. May 23, 2019 #1686

    Rail Dawg

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    It's up to you Levi but if you want to post the progress here that'd be informative for a lot of us!

    I'd venture that most of us have never seen a launch trailer being made from the beginning.

    Your decision of course! Posting on here opens you up for attaboys and critiques but that's not a bad thing.

    Chuck C.
     
  7. May 23, 2019 #1687

    Ez2cDave

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    Levi,

    Think about some removable, protective "wheel pants" to protect the tires, so Chuck doesn't have to pull them off and put them back on.

    "You, sir, are a steely-eyed, missile man" !

    Dave F.

    hurler-5.jpg
     
  8. May 23, 2019 #1688

    Rail Dawg

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    Good idea Dave.

    Welding blankets over the tires should do the trick...

    Chuck C.
     
    Last edited: May 23, 2019
  9. May 23, 2019 #1689

    jbr

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    LOL, I gotta see you weld some blankets
     
  10. May 23, 2019 #1690

    Nytrunner

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    Perhaps hes also interested in the final fin unit dimensions so he can prevent any interference with the trailer mechanism?
     
  11. May 23, 2019 #1691

    boatgeek

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    What grade of welding rod do you use for that? Do you need a skyhook to hold them in place while you weld them? ;)
     
  12. May 23, 2019 #1692

    Ez2cDave

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    Chuck,

    Is that only for protection, during Levi's welding, or is that also the plan to protect the tires, during the launch ?

    Dave F.

    hurler-5.jpg
     
  13. May 23, 2019 #1693

    Rail Dawg

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    If approved just covering the tires with a welding blanket during launch would make things easy.

    We’ve got a small generator, compressor and an impact wrench to do the tires if needed.

    Chuck C.
     
  14. May 23, 2019 #1694

    Ez2cDave

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    Chuck,

    Considering the "friction" that occurred, early on, with this project, I suggest getting all approvals in writing, just in case someone "forgets", later . . . I would also post them here, in this forum, for all to see, creating a "Public Record" !

    An "ounce of prevention" . . . Helps to cure a case of the " I never said's" !

    Got your back . . .

    Dave F.

    hurler-5.jpg
     
  15. May 23, 2019 #1695

    Rail Dawg

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    Not necessary Dave. All is good in the rocketry world.

    I’ve been working with the good folks at KloudBusters and Tripoli Gerlach. They are very professional in their approach to these bigger projects.

    Nothing needs to be in writing.

    Take care.

    Chuck C.
     
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  16. May 23, 2019 #1696

    levi seaton

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    Chuck
    I’ve made some small progress this afternoon cutting and tacking up some of the main pieces for the “chassis” of this beast. The pivot point will be on the uprights of these parts where the diagonal run intersects.
     

    Attached Files:

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  17. May 24, 2019 #1697

    Rail Dawg

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    Holy cow Levi that’s a great start!

    Looking good!

    Chuck C.
     
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  18. May 24, 2019 #1698

    Ez2cDave

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    Chuck,

    Clearly, Levi is one of the "Steely-Eyed, Missile Men" !

    Dave F.

    hurler-5.jpg
     
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  19. May 24, 2019 #1699

    jbr

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    gonna need a 2 ton axle
     
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  20. May 24, 2019 #1700

    Rail Dawg

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    It’s a 15k lb capacity trailer lol. Best manufacturer in Texas (Odom Trailers).

    Chuck C.
     
  21. May 24, 2019 #1701

    Theory

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    that oughta work. ...for now ;-)
     
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  22. May 24, 2019 #1702

    Ez2cDave

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    Chuck,

    Did you tell the trailer company what you were going to do with the trailer ?

    You should send them some PICS of the Launch !

    Dave F.

    hurler-5.jpg
     
  23. May 24, 2019 #1703

    jbr

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  24. May 24, 2019 #1704

    Ez2cDave

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    JBR,

    I think Chuck got the next one up from that model . . . 20ft length, rather than 16ft, same 14,000 lb rating.

    [​IMG]

    Dave F.


    hurler-5.jpg
     
  25. May 24, 2019 #1705

    Ez2cDave

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    Levi,

    Incredible work, sir 1

    Several posts back, I asked Chuck about the "wooden deck" in the trailer. I suggested that he think about, possibly, replacing the wood with "diamond mesh", for fire protection and easy cleanup . . .

    What are your thoughts about wood currently being used on the trailer ?

    Thanks,

    Dave F.

    hurler-5.jpg
     
  26. May 25, 2019 #1706

    Rail Dawg

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    It’s the 14k rated trailer not 15k (my mistake). Yes 7k axles.

    It’s 18 ft long which is plenty. The S rocket may have to be hauled in halves unless we keep it under 22 ft.

    Levi and I did discuss the diamond plate when I dropped it off.

    Thanks guys!

    Chuck C.
     
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  27. May 25, 2019 #1707

    Ez2cDave

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    Chuck,

    I was suggesting "diamond mesh", not "diamond plate" for the deck surface of the trailer . . .

    DIAMOND MESH

    [​IMG]

    DIAMOND PLATE

    [​IMG]

    Dave F.

    hurler-5.jpg
     
  28. May 26, 2019 #1708

    levi seaton

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    I’m not really sure what to think. The rocket will sit 18” off the trailer when upright. The heat will only be there momentarily. I’m really not certain if there will be a problem.
     
  29. May 26, 2019 #1709

    BBrown

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    Levi,
    Over the years we have seen a dozen or so different trailer mounted launch pads come through the Rocket Pasture. Many had wooden decks (and rubber tires). As long as the pad design hangs the rocket off the end of the trailer, there hasn’t been any noticeable damage to the trailer itself.
    Our club just built a new launch trailer for LDRS. The trailer itself was an old boat trailer that a couple of our club members added everything to. We did add diamond mesh to the new deck area only because as a boat trailer there was nothing there. We are not doing anything special for the tires and have no concerns that they will be damaged during a nominal launch.
     
  30. May 26, 2019 #1710

    Ez2cDave

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    Levi,

    I predict that the wood will be set on fire and, likely, punched completely through when the motor lights.

    This is a "Q" motor . . . Chuck's is an "R" motor, much bigger, with an "S" motor following it !



    You're going to need a "blast deflector" to protect the deck ( fire ) and sides of the trailer ( damage to the paint, wiring, brake lights, etc ).

    I am envisioning a "Chute"-shaped design that would contain the flame and exhaust and direct everything aft, beyond the end of the trailer . . . Maybe something like this ( concept only ), 18" - 24" wide, length as required, with a "U-shaped bend". ( "Concept" in images below ).

    Side Panels . . .

    [​IMG]

    Picture something like this, with side panels . . .

    [​IMG]

    NASA Sketch . . .

    [​IMG]

    [​IMG]

    This thread really shows the basic concept well . . . https://forum.nasaspaceflight.com/index.php?topic=36733.40

    If I have to, I'll build a cardboard model to illustrate clearer.

    Thanks, Levi !

    Dave F.

    hurler-5.jpg
     
    Last edited: May 26, 2019

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