| Manufacturer: | Scratch |
3 Stage Cluster Cone
By Art Applewhite
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.
Cutaway Views
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
| Material
List |
|||
| Description |
Source |
Quantity |
Cost
|
| Fluorescent
Posterboard |
Hobby Lobby |
1 Sheet |
$0.79 |
| Foam-backed
Posterboard |
Hobby Lobby |
1 Sheet |
$1.99 |
| Cardstock 8.5"
x 11" |
Walmart |
2 Sheets |
$0.07 ($4.97/150)
|
| Total:
|
$2.89 |
||
Cardstock and foamboard patterns (descon14.pdf)
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.
| Flight
Reports |
|||
| Date |
Configuration |
Motors |
Results |
| August 21, 2004 |
2 Stage |
Stage 1
- A10-PT Stage 2 - B6-0 |
Good straight flight
in light winds, good recovery |
| August 21, 2004 |
3 Stage cluster |
Stage 1
- A10-PT Stage 2 - B6-0 Stage 3 - D12-0, 2 x D11-P |
This is the full
power configuration. Good initial Stage 3 boost on 3 "D"
motors. Stage 2 ignition was good but Stage 1 separated from Stage 2 in
the middle of its boost. Stage 2 continued to fly straight without Stage
1. All stages returned safely because of the ultra-reliable aerobrake
recovery method used for all 3 stages. |
| August 21, 2004 |
2 Stage |
Stage 1
- A10-PT Stage 2 - C6-0 |
Good flight with
slight weather cocking in a moderate wind, good recovery |
Flight Photos
First Flight
2 stage version waiting on the pad
|
2 stage version after flight |
2 stage version Bottom after flight
with some minor scorching on the bottom of Stage 1 |
3 Stage, cluster version waiting on
pad
|
3 stage, cluster version after flight
with some minor scorching on the top of Stage 3 |
 3rd Stage landing |
3 stage version being flown in 2 stage configuration using A10-PT C6-0 motors
Art Applewhite - www.artapplewhite.com
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