High Power Rocketry (HPR)

Rockets using motors from H impulse upwards.

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  1. bobkrech
    Sticky

    L3 Certification Documentation Links - No Third Party Comments Please

    bobkrech, Nov 24, 2016 ... 2
    Replies:
    42
    Views:
    12,314
    farsidius
    Nov 5, 2018
  2. flynfrog
    Sticky

    Properly bonding composites and what your government doesn't want you to know.

    flynfrog, Sep 15, 2013 ... 2 3
    Replies:
    67
    Views:
    37,634
    FlyBy01
    Mar 19, 2018
  3. bobkrech
    Locked Sticky

    Discussions of Amateur Rocket Motors belong in the Reseach Forum

    bobkrech, Sep 13, 2015
    Replies:
    0
    Views:
    4,782
    bobkrech
    Sep 13, 2015
  4. Green Jello
    Sticky

    How To Build A "Stock" 3IN DARKSTAR CJ Step By Step

    Green Jello, May 30, 2013
    Replies:
    1
    Views:
    14,986
    Wayco
    Jun 1, 2013
  5. snrkl

    MadCow 66mm Black Brandt II FG

    snrkl, Oct 21, 2018 ... 2 3
    Replies:
    69
    Views:
    1,601
    timbucktoo
    Nov 19, 2018 at 11:28 AM
  6. DM1975

    Upscale Time!!!

    DM1975, Sep 15, 2018 ... 5 6 7
    Replies:
    191
    Views:
    4,005
    snrkl
    Nov 19, 2018 at 11:14 AM
  7. lowga

    BT-80 Fiberglass Airframe Available?

    lowga, Nov 19, 2018 at 5:58 AM
    Replies:
    1
    Views:
    34
    tfish
    Nov 19, 2018 at 6:11 AM
  8. lowga

    Hard Hats in HPR

    lowga, Nov 18, 2018 at 4:04 AM
    Replies:
    27
    Views:
    576
    Wallace
    Nov 19, 2018 at 5:50 AM
  9. ArchitectOfSeven
    Locked

    Deepest crater competition

    ArchitectOfSeven, Nov 18, 2018 at 11:18 AM ... 2
    Replies:
    44
    Views:
    833
    cwbullet
    Nov 18, 2018 at 11:42 PM
  10. Lloyd Leichentritt

    Need Openrocket file for a Mach 1 38mm BT60 Speed Demon

    Lloyd Leichentritt, Nov 18, 2018 at 6:28 PM
    Replies:
    7
    Views:
    75
    SteveThatcher
    Nov 18, 2018 at 11:15 PM
  11. ThirstyBarbarian

    Adding Payload Section to Warlock — Rail Button Position?

    ThirstyBarbarian, Nov 16, 2018 at 5:28 PM
    Replies:
    8
    Views:
    176
    jd2cylman
    Nov 18, 2018 at 6:26 PM
  12. ArchitectOfSeven

    Ejection charge powder in California???

    ArchitectOfSeven, Sep 23, 2018 ... 2
    Replies:
    30
    Views:
    1,187
    blackjack2564
    Nov 18, 2018 at 6:24 AM
  13. Mr G

    Anyone score a Friday sale Madcow DX3 XL?

    Mr G, Nov 4, 2018
    Replies:
    16
    Views:
    729
    Mr G
    Nov 18, 2018 at 2:26 AM
  14. dlb

    5.5" AMW WhiteWolf is done.

    dlb, Apr 4, 2018
    Replies:
    11
    Views:
    872
    LOC
    Nov 18, 2018 at 2:20 AM
  15. SMarshall

    Fin Size Issues in Open Rocket

    SMarshall, Nov 11, 2018
    Replies:
    3
    Views:
    175
    Handeman
    Nov 17, 2018 at 11:12 PM
  16. Adrian A

    29mm Min-Diameter High Performance Scratch Build Thread

    Adrian A, Oct 29, 2018 ... 2
    Replies:
    32
    Views:
    1,562
    Adrian A
    Nov 17, 2018 at 6:43 PM
  17. Tom Zachman

    Jolly Logic Chute Release and Altimeter Three Systems on L-2 Attempts?

    Tom Zachman, Nov 12, 2018 ... 2
    Replies:
    48
    Views:
    1,078
    solid_fuel
    Nov 17, 2018 at 4:42 PM
  18. rockets

    Wildman Rocketry Blackhawk 38 build thread

    rockets, May 12, 2018 ... 2 3 4
    Replies:
    111
    Views:
    6,085
    rockets
    Nov 17, 2018 at 3:20 AM
  19. swatkat

    Level 2 Attempt- Mach 1 Rocketry Speed Demon Build Thread

    swatkat, Jul 23, 2018 ... 2
    Replies:
    30
    Views:
    1,000
    Rockethound
    Nov 17, 2018 at 1:48 AM
  20. OKTurbo

    High Powered Flis Praetor? Will the fins stay on?

    OKTurbo, Nov 16, 2018 at 12:38 AM
    Replies:
    5
    Views:
    229
    OKTurbo
    Nov 17, 2018 at 12:24 AM
  21. blackjack2564

    Cj builds...........TRFKAB The Rocket Formerly Known as Black [IT'S BACK!!!!}

    blackjack2564, May 10, 2017 ... 2 3
    Replies:
    74
    Views:
    7,136
    timbucktoo
    Nov 16, 2018 at 10:23 PM
  22. jmmome

    6" Gemini Titan Build

    jmmome, Nov 14, 2018 at 8:06 PM
    Replies:
    6
    Views:
    265
    jmmome
    Nov 16, 2018 at 3:04 PM
  23. DAllen

    38mm Deuces Wild Upscale

    DAllen, Mar 31, 2016
    Replies:
    28
    Views:
    3,831
    DAllen
    Nov 16, 2018 at 3:30 AM
  24. jfreeberg88

    Question about using an AARD.

    jfreeberg88, Nov 16, 2018 at 2:00 AM
    Replies:
    1
    Views:
    142
    JDcluster
    Nov 16, 2018 at 2:55 AM
  25. Joe Rocket 97

    What's your Biggest Foam and Fly Builds

    Joe Rocket 97, Nov 15, 2018 at 10:47 PM
    Replies:
    5
    Views:
    133
    Joe Rocket 97
    Nov 16, 2018 at 12:52 AM
  26. Glasspack

    FAA Approval for a Class 2 HPR launch

    Glasspack, Sep 29, 2018 ... 2
    Replies:
    48
    Views:
    1,885
    watheyak
    Nov 16, 2018 at 12:26 AM
  27. lowga

    Florida Man Arrested for Making his Own Explosives (TATP)

    lowga, Nov 14, 2018 at 4:50 PM
    Replies:
    15
    Views:
    708
    BAMA_Recovery_Systems
    Nov 15, 2018 at 12:17 PM
  28. Nathan

    Madcow Cowabunga Mammoth build

    Nathan, May 18, 2018 ... 3 4 5
    Replies:
    123
    Views:
    8,200
    ThirstyBarbarian
    Nov 15, 2018 at 12:33 AM
  29. Normzilla

    Removing A Retainer

    Normzilla, Nov 13, 2018 at 2:20 PM
    Replies:
    15
    Views:
    322
    farsidius
    Nov 14, 2018 at 7:58 PM
  30. RocketryBen

    Where to get ematches?

    RocketryBen, Jan 18, 2018 ... 2 3 4
    Replies:
    115
    Views:
    7,400
    Bat-mite
    Nov 14, 2018 at 6:09 PM
  31. nickrulercreator

    Dual Deployment Without Ejections

    nickrulercreator, Nov 12, 2018
    Replies:
    23
    Views:
    676
    John Beans
    Nov 14, 2018 at 5:53 PM
  32. jjwb22101

    L3 Project Design/Build Thread: Warp Zero

    jjwb22101, Nov 11, 2018
    Replies:
    13
    Views:
    421
    Nytrunner
    Nov 14, 2018 at 4:17 PM
  33. Tom Zachman

    Flying an Instrumented Aerotech 2.6 Arcas on a H135W-10 for a attempted L-1. Thoughts?

    Tom Zachman, Nov 5, 2018
    Replies:
    15
    Views:
    457
    Tom Zachman
    Nov 14, 2018 at 1:23 PM
  34. lowga

    Do Rail Guides Really Improve Performance?

    lowga, Nov 13, 2018 at 2:03 PM
    Replies:
    3
    Views:
    266
    Steve Shannon
    Nov 14, 2018 at 11:15 AM
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