|3 Stage Cluster
This is a 3 stage, Clustered Cone rocket with 5 motors in it's full power configuration
Stage 1 - Top - 13mm A10-PT
Stage 2 - Middle - 18mm C6-0
Stage 3 - Bottom - 3 x 24mm inline motor cluster, D12-0 center, 2 x D11-P outboard
The rocket is 8" high and 9.25" in diameter at the base. It is constructed entirely out of cardstock and foambacked posterboard using white glue. All 3 stages use ultra reliable aerobrake recovery.
Parts - Stage 1, top leftmost, Stage 2, the rest of the top row, Stage 3, entire bottom row
Another view of the parts - Orange = posterboard, Yellow = Cardstock, White = Foam backed Posterboard
Cardstock and foamboard patterns (descon14.pdf)
The motors are stacked for insertion into the rocket. (Click on the picture for more detail.
The nozzle end of the motors are inserted about 0.25" into the forward end of the next motor.
The motors are inserted into the rocket bottom stage first and then second stage and top stage in turn.
Only the top stage(A10-PT) needs to be friction fitted, the others are held in place by the top stage and aerodynamic forces.
2 versions were built. The first is a 2 stage version made from 65 lb yellow cardstock and printed on a laser printer. The seconds version is the full 3 stage, cluster made from Orange "Royal" brand posterboard shrouds, yellow cardstock motor mounts and white foam backed posterboard.
3 stage version being flown in 2 stage configuration using A10-PT & C6-0 motors
Art Applewhite - www.artapplewhite.com