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:
    48
    Views:
    20,627
    curtisheisey
    Feb 5, 2020
  2. flynfrog
    Sticky

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

    flynfrog, Sep 15, 2013 ... 2 3
    Replies:
    88
    Views:
    44,501
    slothead
    Mar 10, 2019
  3. bobkrech
    Locked Sticky

    Discussions of Amateur Rocket Motors belong in the Reseach Forum

    bobkrech, Sep 13, 2015
    Replies:
    0
    Views:
    5,837
    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:
    18,717
    Wayco
    Jun 1, 2013
  5. Cmac

    I'm starting my L1 cert. research

    Cmac, Feb 17, 2020 ... 2 3
    Replies:
    80
    Views:
    1,632
    K'Tesh
    Feb 25, 2020 at 2:48 AM
  6. dr wogz

    Seawolf (Madcow) how it flies, how it don’t..

    dr wogz, Feb 24, 2020 at 6:04 PM
    Replies:
    7
    Views:
    151
    Flyfalcons
    Feb 25, 2020 at 2:12 AM
  7. ECayemberg

    MAC Performance 4" Bolt Two Stage Build

    ECayemberg, Jan 2, 2020
    Replies:
    24
    Views:
    1,209
    spigalau
    Feb 25, 2020 at 12:33 AM
  8. NateB

    Punisher 3 for Level 1

    NateB, Jan 13, 2020 ... 2
    Replies:
    35
    Views:
    1,436
    NateB
    Feb 24, 2020 at 9:18 PM
  9. Chuck Rogers

    New Version of the Free RASAero II Software Released

    Chuck Rogers, Aug 10, 2016
    Replies:
    20
    Views:
    1,327
    Dr. Shamoon Jamshed
    Feb 24, 2020 at 1:31 PM
  10. Mugs914

    LOC 4" Nike Zeus build thread (With mods)...

    Mugs914, Jan 19, 2020 ... 2
    Replies:
    36
    Views:
    1,359
    Theory
    Feb 24, 2020 at 12:11 PM
  11. SCP

    Cluster Thrust Plate production run - custom size "poll"

    SCP, Feb 21, 2020 at 4:11 PM
    Replies:
    5
    Views:
    266
    MikeyDSlagle
    Feb 23, 2020 at 2:27 PM
  12. Rocketjunkie

    Variable Drag Project

    Rocketjunkie, Jan 14, 2020 ... 2
    Replies:
    35
    Views:
    1,028
    Rocketjunkie
    Feb 22, 2020 at 10:29 PM
  13. Chris_H

    Source for fin jig for 38mm

    Chris_H, Feb 20, 2020 at 3:57 PM
    Replies:
    9
    Views:
    418
    Chris_H
    Feb 22, 2020 at 6:41 PM
  14. Steven88

    Rail button spacer

    Steven88, Feb 20, 2020 at 11:35 PM
    Replies:
    9
    Views:
    291
    o1d_dude
    Feb 22, 2020 at 8:21 AM
  15. Cmac

    What altitude for visual tracking?

    Cmac, Feb 17, 2020 ... 2
    Replies:
    33
    Views:
    622
    HVArcas
    Feb 21, 2020 at 10:26 PM
  16. Nodroc

    Penguin 1: Supersonic Ice Cream Sandwich (Build Thread)

    Nodroc, Jan 21, 2020 ... 2
    Replies:
    31
    Views:
    1,202
    Pariah Zero
    Feb 21, 2020 at 7:23 AM
  17. DAllen

    Adhesive Vinyl for a Circut

    DAllen, Feb 17, 2020
    Replies:
    11
    Views:
    403
    rharshberger
    Feb 21, 2020 at 6:23 AM
  18. Hooked On Rockets

    4" Madcow Black Friday AGM 33 Pike "Overbuild" Thread

    Hooked On Rockets, Dec 28, 2019 ... 2
    Replies:
    31
    Views:
    1,613
    Hooked On Rockets
    Feb 21, 2020 at 2:59 AM
  19. Flyfalcons

    LOC Precision 5.5" Patriot Missile video build

    Flyfalcons, Feb 19, 2020 at 6:57 PM
    Replies:
    6
    Views:
    252
    SeanW78
    Feb 20, 2020 at 4:26 PM
  20. downhill_D

    Hyperloc 835 Build (updated kit) - Level 2 kit

    downhill_D, Jan 7, 2020 ... 2
    Replies:
    39
    Views:
    1,515
    downhill_D
    Feb 20, 2020 at 1:46 PM
  21. Magin

    Is that stability graphic is fine?

    Magin, Feb 19, 2020 at 6:23 PM
    Replies:
    5
    Views:
    209
    Magin
    Feb 20, 2020 at 12:22 AM
  22. Scrapmaster87

    Altimiter in a pyramid?

    Scrapmaster87, Feb 14, 2020
    Replies:
    3
    Views:
    263
    DAllen
    Feb 19, 2020 at 11:37 AM
  23. DAllen

    The Flying Disc Golf Basket of Death and Distruction

    DAllen, Dec 1, 2018 ... 3 4 5
    Replies:
    136
    Views:
    7,187
    DAllen
    Feb 18, 2020
  24. Glasspack

    Glasspacks' LVL II Build

    Glasspack, Feb 9, 2020
    Replies:
    8
    Views:
    359
    Glasspack
    Feb 18, 2020
  25. dr wogz

    Upsale Big Daddy or Der red Max?

    dr wogz, Jun 6, 2018 ... 2
    Replies:
    39
    Views:
    2,795
    kuririn
    Feb 18, 2020
  26. cwbullet

    High Power Helicopter Recovery?

    cwbullet, Jan 3, 2013 ... 2
    Replies:
    37
    Views:
    3,239
    cwbullet
    Feb 18, 2020
  27. Bat-mite

    My quest for an O motor launch.

    Bat-mite, Apr 17, 2019 ... 10 11 12
    Replies:
    350
    Views:
    21,833
    Bat-mite
    Feb 18, 2020
  28. kjkcolorado

    Using Kevlar as recovery harness attachment on 38mm min diam project

    kjkcolorado, Feb 13, 2020
    Replies:
    20
    Views:
    574
    HVArcas
    Feb 18, 2020
  29. douglas423

    Rocket nozzle design

    douglas423, Feb 18, 2020
    Replies:
    1
    Views:
    152
    Nytrunner
    Feb 18, 2020
  30. ktc

    test stand

    ktc, Feb 17, 2020
    Replies:
    1
    Views:
    140
    ktc
    Feb 17, 2020
  31. prfesser

    Another Open Rocket question (applies to Rocksim too)

    prfesser, Feb 16, 2020
    Replies:
    3
    Views:
    145
    dhbarr
    Feb 17, 2020
  32. Tim51

    3" / 38mm scratch build

    Tim51, Feb 13, 2020
    Replies:
    4
    Views:
    235
    Tim51
    Feb 16, 2020
  33. AfterBurners

    L2 Questions?

    AfterBurners, Feb 1, 2020 ... 2
    Replies:
    35
    Views:
    908
    ThirstyBarbarian
    Feb 16, 2020
  34. Steven88

    Open Rocket

    Steven88, Feb 16, 2020
    Replies:
    4
    Views:
    183
    neil_w
    Feb 16, 2020
Showing threads 1 to 30 of 10,827

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