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:
    41
    Views:
    11,538
    anbhtblr
    Sep 18, 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:
    37,064
    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:
    4,612
    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:
    14,671
    Wayco
    Jun 1, 2013
  5. billdz

    LOC Big Nuke 3E stability?

    billdz, Sep 25, 2018 at 3:39 AM
    Replies:
    4
    Views:
    136
    mikec
    Sep 25, 2018 at 9:58 PM
  6. RGClark

    Princeton University attempt at a suborbital space shot?

    RGClark, Apr 21, 2018 ... 4 5 6
    Replies:
    175
    Views:
    10,877
    RGClark
    Sep 25, 2018 at 9:57 PM
  7. ArchitectOfSeven

    Ejection charge powder in California???

    ArchitectOfSeven, Sep 23, 2018 at 1:38 AM
    Replies:
    16
    Views:
    496
    Buzzard
    Sep 25, 2018 at 9:47 PM
  8. JonathanOtt

    FOUND ONE!!!! I found the elusive Mega Der Red Max...

    JonathanOtt, Sep 25, 2018 at 9:02 PM
    Replies:
    1
    Views:
    51
    JonathanOtt
    Sep 25, 2018 at 9:06 PM
  9. mperegrinefalcon

    Small Bulge in rocket motor casing

    mperegrinefalcon, Jan 1, 2018 ... 2
    Replies:
    51
    Views:
    2,855
    Steve Shannon
    Sep 25, 2018 at 4:18 PM
  10. Wallace

    Loc Pk-66 Ultimate; Now a build thread w/pictures.

    Wallace, Jun 23, 2018 ... 3 4 5
    Replies:
    135
    Views:
    3,542
    Wallace
    Sep 25, 2018 at 2:19 PM
  11. 5x7

    Repair of a Wildman Extreme gelcoat nosecone

    5x7, Nov 6, 2014
    Replies:
    11
    Views:
    1,019
    5x7
    Sep 25, 2018 at 11:12 AM
  12. Thorfire

    CTI Hubcap availability

    Thorfire, Sep 24, 2018 at 6:38 PM
    Replies:
    4
    Views:
    177
    dhbarr
    Sep 25, 2018 at 2:41 AM
  13. jahall4

    ISO someone to 3D print a nosecone that can survive a short time at Mach.

    jahall4, Sep 25, 2018 at 1:38 AM
    Replies:
    0
    Views:
    61
    jahall4
    Sep 25, 2018 at 1:38 AM
  14. KC3KNM

    Madcow Level-2 Build

    KC3KNM, Jul 19, 2018
    Replies:
    25
    Views:
    1,144
    Andrew_ASC
    Sep 25, 2018 at 12:41 AM
  15. billdz

    Are the Aerotech DMS Thrust Ring Advisories Still in Effect?

    billdz, Sep 24, 2018 at 6:58 PM
    Replies:
    6
    Views:
    139
    markkoelsch
    Sep 25, 2018 at 12:34 AM
  16. ActingLikeAKid

    If I'm going to use shear pins... what do I use now?

    ActingLikeAKid, Sep 24, 2018 at 2:26 PM
    Replies:
    9
    Views:
    223
    snrkl
    Sep 24, 2018 at 11:50 PM
  17. billdz

    Detecting and accounting for upper air wind?

    billdz, Sep 24, 2018 at 5:24 PM
    Replies:
    7
    Views:
    122
    markkoelsch
    Sep 24, 2018 at 7:23 PM
  18. wadavidson

    Monster Projects for Argonia LDRS

    wadavidson, Jun 30, 2018 ... 2
    Replies:
    43
    Views:
    1,930
    pendrin2020
    Sep 24, 2018 at 7:01 PM
  19. David Schwantz

    The REAL High Power Stuff

    David Schwantz, Sep 23, 2018 at 3:16 AM
    Replies:
    2
    Views:
    206
    David Schwantz
    Sep 24, 2018 at 5:04 PM
  20. J Blatz

    Looking at getting an Altaira Friede

    J Blatz, Sep 24, 2018 at 1:46 AM
    Replies:
    5
    Views:
    178
    Nytrunner
    Sep 24, 2018 at 3:33 PM
  21. JimJarvis50

    So, maybe I'll try a three-stager

    JimJarvis50, Jun 22, 2014 ... 18 19 20
    Replies:
    580
    Views:
    76,472
    SpaceManMat
    Sep 24, 2018 at 12:43 PM
  22. VonRecktofen

    MadCow 3" Sport X L1 Cert Build

    VonRecktofen, Jul 18, 2018 ... 2 3
    Replies:
    66
    Views:
    1,547
    VonRecktofen
    Sep 24, 2018 at 11:42 AM
  23. Max Peters

    Opening Fiberglass Fin Slots

    Max Peters, Sep 23, 2018 at 1:05 AM
    Replies:
    9
    Views:
    187
    Rex R
    Sep 24, 2018 at 9:18 AM
  24. Andrew_ASC

    X1.4: A 24mm MD prototype story.

    Andrew_ASC, Aug 17, 2018 ... 11 12 13
    Replies:
    387
    Views:
    11,174
    Rainmaker
    Sep 24, 2018 at 8:24 AM
  25. ActingLikeAKid

    Small Eyebolt vs. Epoxy to Motor Mount

    ActingLikeAKid, Sep 21, 2018 at 1:36 PM
    Replies:
    9
    Views:
    255
    Eric
    Sep 24, 2018 at 5:30 AM
  26. rharshberger

    Rich's 4" Loc V2 build

    rharshberger, Jul 30, 2018
    Replies:
    28
    Views:
    898
    rharshberger
    Sep 23, 2018 at 4:31 PM
  27. David Schwantz

    A few more pics

    David Schwantz, Sep 23, 2018 at 3:22 AM
    Replies:
    6
    Views:
    161
    David Schwantz
    Sep 23, 2018 at 4:15 AM
  28. Jack Hydrazine

    3D Printed Rail Buttons and Guides

    Jack Hydrazine, Sep 2, 2018
    Replies:
    16
    Views:
    303
    Jack Hydrazine
    Sep 23, 2018 at 3:47 AM
  29. Arsenal78

    BSD Thor - My L2 Rocket

    Arsenal78, Sep 20, 2018 at 3:32 AM
    Replies:
    26
    Views:
    399
    Nytrunner
    Sep 22, 2018 at 6:32 PM
  30. mpitfield

    MAC Performance RainMaker 54 Build

    mpitfield, Oct 17, 2017 ... 2 3
    Replies:
    66
    Views:
    3,852
    mpitfield
    Sep 22, 2018 at 4:18 PM
  31. DM1975

    Upscale Time!!!

    DM1975, Sep 15, 2018 ... 2 3
    Replies:
    63
    Views:
    912
    DM1975
    Sep 21, 2018 at 3:41 PM
  32. ColumbiaNX01

    Sourcing Carbon Fiber plate for fins

    ColumbiaNX01, Sep 8, 2018
    Replies:
    4
    Views:
    274
    shonc182
    Sep 21, 2018 at 3:39 PM
  33. mrwalsh85

    Madcow Adventurer 2.2"

    mrwalsh85, Nov 22, 2017 ... 2
    Replies:
    54
    Views:
    4,272
    mrwalsh85
    Sep 21, 2018 at 11:32 AM
  34. ChrisAttebery

    Insanity Plea: A sub minimum diameter M2245 project.

    ChrisAttebery, Dec 20, 2017 ... 4 5 6
    Replies:
    166
    Views:
    11,856
    OverTheTop
    Sep 21, 2018 at 8:48 AM
Showing threads 1 to 30 of 10,125

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