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Thread: Mid-school project

  1. #1
    Join Date
    6th July 2011
    Location
    Southwestern USA
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    72

    Smile Mid-school project

    This is a cardstock rocket my mid-school elective class built. We launched it on a D12-5 with great success. It used a 12 inch parachute for recovery. The main tube was built using 17 inch cardstock double wrapped around pvc pipe, coupling two sections together. Their next project(s) is the making of a micromaxx, a 13 mm rocket, an 18 mm rocket, and a 24 mm rocket.


  2. #2
    Join Date
    18th January 2009
    Location
    SW Michigan
    Posts
    1,856
    That's awesome! Good job!

    Got plans/pictures of that build? I bet other people would like to build one of those.

    Dave Brunsting | NAR 85879 | TRA 12369
    L1 - 11/04/07, Three Oaks, MI | L2 - 7/25/09, Muskegon, MI
    Prefect | Michiana Rocketry
    ND SLP 2012 Mentor

  3. #3
    Join Date
    6th July 2011
    Location
    Southwestern USA
    Posts
    72

    Talking The build

    I'll work up the plans. We did not take pics as we were building. I need to do that in the future.

  4. #4
    Join Date
    17th August 2011
    Location
    Monterrey, MX
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    228
    Congrat,

    Excellent Job !!!!!

  5. #5
    Join Date
    6th July 2011
    Location
    Southwestern USA
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    72

    Post

    I've used OpenRocket to put the design into a file (attached). What is lacking is the cones for the outrigger tubes at the ends of the fins. They were 1 inch radius circles coiled to fit the 3/8" tubes. OpenRocket doesn't have the outrigger as an option so I used the inner tubes, only placed outside the main tube.

    The main tube was built wrapping 17" cardstock double around a 1-1/4" pvc pipe. Two sections were coupled together to achieve the 34" length. The coupler and the shoulder for the nose cone were built using the main tubing as a guide for the correct diameter. The fins are two layers of cardstock built slightly larger then cut to size. The outriggers were built by wrapping cardstock around round colored pencils, same with the launch lug. The engine mount was formed by wrapping cardstock around a E9-6 engine, building the engine stop to fit inside that. We use wedge fit for engine retainer, no engine hook. The centering rings were double layered cardstock cut with a circle cutter. The kids made their own parachute from colored trash bags. The 5 ft. shock cord was 1/16th nylon cord with two rubber bands at the anchor point in the tube, kind of estes style.
    Attached Files Attached Files

  6. #6
    Join Date
    6th July 2011
    Location
    Southwestern USA
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    72
    Quote Originally Posted by Montaro View Post
    Congrat,

    Excellent Job !!!!!
    Thanks, we sure enjoyed building it.

  7. #7
    Join Date
    20th January 2009
    Location
    Phoenix, AZ
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    1,638
    Looks like the kids did a nice job on the conical nose cone. I've done a few and it is not as easy as one thinks to get the correct shape. Nice job guys/gals.

    I've done some pretty cool paper towel tube rockets. It's cheap, fun and lets the imagination work. Way to go, Teach.

  8. #8
    Join Date
    6th July 2011
    Location
    Southwestern USA
    Posts
    72
    We are doing a new project. The class has divided into four groups where one is building a micromaxx, one is building a 13 mm rocket, one is building a 18 mm rocket, and one is building a 24 mm rocket, all cardstock. This will be interesting.

  9. #9
    Join Date
    2nd February 2010
    Location
    Watertown, Wisconsin
    Posts
    886
    Quote Originally Posted by Orion
    ...one is building a 13 mm rocket, one is building a 18 mm rocket, and one is building a 24 mm rocket, all cardstock. This will be interesting.
    Kinda funny you would mention that, I'm thinking of either a 24, 29 or maybe even 38mm powered poster board rocket. That may have something to do with my 'Paper Ogive' thread...

    You suppose I could get my Level 1 with a PBR? I've come to the conclusion...I don't see why not....

    I'll call it ASAP..........
    Jeff Schubert
    WOOSH Member #2,867,951
    My YouTube Channel (All rockets!)

  10. #10
    Join Date
    6th July 2011
    Location
    Southwestern USA
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    72
    Quote Originally Posted by McKailas Dad View Post
    You suppose I could get my Level 1 with a PBR? I've come to the conclusion...I don't see why not....

    I'll call it ASAP..........
    I got my level 1 with an "almost" PBR. The body tube (34" long x 2.6" d) was made with three layers of 110lb cardstock. I built a baffle so I wouldn't have to use wading or such and it was made with cardstock. I did use 1/4" plywood fins and balsa nose cone, but I don't see why a cardstock nose cone wouldn't be ok.

    I'd like to see it when you finish.

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