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repaired AT Barracuda
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  1. #1
    Join Date
    23rd September 2011
    Location
    Tx.
    Posts
    752

    repaired AT Barracuda

    Had my 1st cato the other day I have a AT barracuda I normally fly on E18 and E28 reloads with the adapter,has always worked great.Well I guess I shoved the igniter in to far because the moment it left the rod the chute popped and fire shot out the top of it(propellant trying to thrust out of the ejection hole?).Afterwards the 24mm case had a slightly larger hole in the ejection closure, I think it will be alright but I'm still debating on that.Anywho it's fixed with OR help but can someone tell me why when you override the mass of a component it doesn't show up in the total mass of the design?File is attached
    Attached Files Attached Files

  2. #2
    Join Date
    21st April 2010
    Location
    So central WI, USA
    Posts
    3,344
    er, possibly because of the mass/cg over ride is set for the entire rocket(stage).
    rex

  3. #3
    Join Date
    20th February 2010
    Location
    Urbana
    Posts
    305
    Its likey the delay grain was not tight. Make sure the delay grain is tight. wrap scotch tape around the delay grain so its tight in the aft closure.

    Grimracer

  4. #4
    Join Date
    20th January 2011
    Location
    Redondo Beach, CA
    Posts
    4,544
    Quote Originally Posted by Grimracer View Post
    Its likey the delay grain was not tight. Make sure the delay grain is tight. wrap scotch tape around the delay grain so its tight in the aft closure.

    Grimracer
    I used to believe this as well and always tightened up the grain insulator with a bit of tape. Not sayin' it'll hurt anything. But Gary told me it's simply not required. Whats required is the grain seal against the O-ring (or rings if an older reload).


    Just sayin...

    Jeff Gortatowsky
    Redondo Beach, CA. NAR 70988 Level 2
    2014 Stats: Flights: 40
    Approximate Total Impulse: 5,776.Ns (Equivalent to a 13% M motor.)
    Approx. Average Cost per flight: $14.23USD
    Approx. Total RETAIL Cost: $569USD (Not what I paid)

    Link will take you to: About me, Flights, and Fleet

    --------------------
    "One does not believe in science. Science is a set of methods for inquiry of that which is real, not a belief system. -- Doctor Steven Novella

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