Rschub
Well-Known Member
I have been a little obsessed with the Sprint missile recently, I saw a launch video of the full size version about a year ago and it kick started my childhood rocket hobby back to life. So I did the needful and built a LOC Minnie Magg and got certified level one last month. Now for the white whale. I got this.
I have done a fair bit of research and found a drawing I thought I could use, time to fire up the old computer.
Luckily I am a Solidworks nerd, so things proceeded quickly.....
The nosecone will be turned from wood, the nose tip and fin can will be 3D printed, and the body will be hot wired pink foam.
I am not really familiar with whiz bang electronics yet, so here is where it gets interesting.
I am planning on a 6 engine cluster with gap staging to a 3 engine cluster on the sustainer. The center ring will direct ejection gasses to the center tube for rear parachute ejection, and angle the upper tubes towards the upper stage engines. The plan is to use Estes 29mm motors on both stages.
The sustainer will be pinned loosely to bushings in the booster.
One of the things I stressed over was how to launch this thing. Every method of rail launching I came up with was either unworkable or just plain ugly. Then one day I chanced to look at a seldom used view...
...and realized that with a slight deviation from the drawings, my problem was solved.
I think an 8 foot launch tube will allow this pig to get to a respectable velocity before people have to start running. With any luck I'll get a nice smoke ring.
I am using LOC tubing and will be sending out the files for laser cutting the plywood bulkheads shortly. Wish me luck.
I have done a fair bit of research and found a drawing I thought I could use, time to fire up the old computer.
Luckily I am a Solidworks nerd, so things proceeded quickly.....
The nosecone will be turned from wood, the nose tip and fin can will be 3D printed, and the body will be hot wired pink foam.
I am not really familiar with whiz bang electronics yet, so here is where it gets interesting.
I am planning on a 6 engine cluster with gap staging to a 3 engine cluster on the sustainer. The center ring will direct ejection gasses to the center tube for rear parachute ejection, and angle the upper tubes towards the upper stage engines. The plan is to use Estes 29mm motors on both stages.
The sustainer will be pinned loosely to bushings in the booster.
One of the things I stressed over was how to launch this thing. Every method of rail launching I came up with was either unworkable or just plain ugly. Then one day I chanced to look at a seldom used view...
...and realized that with a slight deviation from the drawings, my problem was solved.
I think an 8 foot launch tube will allow this pig to get to a respectable velocity before people have to start running. With any luck I'll get a nice smoke ring.
I am using LOC tubing and will be sending out the files for laser cutting the plywood bulkheads shortly. Wish me luck.