Boosted Stretched Super Big Bertha

Discussion in 'Mid Power Rocketry (MPR)' started by heada, Nov 13, 2019.

Help Support The Rocketry Forum by donating:

  1. Nov 13, 2019 #1

    heada

    heada

    heada

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,818
    Likes Received:
    280
    Gender:
    Male
    Location:
    Indianapolis, Indiana
    I have a Super Big Bertha kit and some BT80 tubes with couplers. I'm trying to decide if I want to stretch the SBB, add a booster or both. I like the look of a stretched SBB but I also want to stage it using LOC interchangable MMTs (4x18mm, 1x24mm, 3x24mm and 1x29mm)

    Thoughts?
     
  2. Nov 13, 2019 #2

    BABAR

    BABAR

    BABAR

    Builds Rockets for NASA TRF Lifetime Supporter TRF Supporter

    Joined:
    Aug 27, 2011
    Messages:
    5,111
    Likes Received:
    776
  3. Nov 13, 2019 #3

    heada

    heada

    heada

    Well-Known Member

    Joined:
    Jan 18, 2009
    Messages:
    2,818
    Likes Received:
    280
    Gender:
    Male
    Location:
    Indianapolis, Indiana
    1x29mm for sustainer which is the standard with the kit. The interchangable mounts in the booster only. I'm HPR L2 so I could do 3x24mm to 3x24mm but that gets too expansive.

    I was thinking direct staging and keeping it without electronics.
     
  4. Nov 16, 2019 #4

    Lynn McCall

    Lynn McCall

    Lynn McCall

    Well-Known Member

    Joined:
    Jun 12, 2019
    Messages:
    78
    Likes Received:
    22
    Gender:
    Male
    My experience is cluster staging is really tough. If one or two don't light, the odds for a pile driver go way up. I would go with 1x29.
     
  5. Nov 16, 2019 #5

    Lynn McCall

    Lynn McCall

    Lynn McCall

    Well-Known Member

    Joined:
    Jun 12, 2019
    Messages:
    78
    Likes Received:
    22
    Gender:
    Male
    Thinking about it... 3x24 in the booster might work, but go with gap staging. Will you be using dual deployment?
     

Share This Page

Group Builder