Well I am going to start my Level three certification process. I am Tripoli member in good standings and have had a Level 2 for a few years. For those who don’t know the size of rocket motors here is a little chart to get an idea of power vs. impulse designation.
| Class |
Total Impulse |
Total Impulse |
|
A |
1.26-2.50 N·s |
0.29-0.56 lbf·s |
|
B |
2.51-5.00 N·s |
0.57-1.12 lbf·s |
|
C |
5.01-10.00 N·s |
1.13-2.24 lbf·s |
|
D |
10.01-20.00 N·s |
2.25-4.48 lbf·s |
|
E |
20.01-40.00 N·s |
4.49-8.96 lbf·s |
|
F |
40.01-80.00 N·s |
8.97-17.92 lbf·s |
|
G |
80.01-160.00 N·s |
17.93-35.96 lbf·s |
|
H |
160.01-320.00 N·s |
35.97-71.92 lbf·s |
|
I |
320.01-640.00 N·s |
71.93-143.83 lbf·s |
|
J |
640.01-1280.00 N·s |
143.84-287.65 lbf·s |
|
K |
1,280.01-2,560.00 N·s |
287.66-575.30 lbf·s |
|
L |
2,560.01-5,120.00 N·s |
575.31-1150.60 lbf·s |
|
M |
5,120.01-10,240.00 N·s |
1150.61-2301.20 lbf·s |
|
N |
10,240.01-20,480.00 N·s |
2301.21-4602.40 lbf·s |
|
O |
20,480.01-40,960.00 N·s |
4602.41-9204.80 lbf·s |
I have flown everything from a A motor to a L motor. I have clustered J motors, air started I, J and K motors, and I have even made two stage cluster AP combinations. I have helped on lots of rockets in the M, N and O range. Now I figure it was time for me to get my L-3 out of the way.
The requirements for the rocket are as follows.
Motor: I have changed my mind about using a Hybrid motor. The motor of choice is now the Animal Motor Works M 2200 Skid Mark Squirrel.
Motor mount: 3″ x 48″
Outside diameter: 4″ length 9″
Material: Carbon fiber / Kevlar composite over phenolic resin. Fiberglass and carbon fiber fins. Solid urethane nose cone.
Electronics: One barometric Altimeter one Accelerometer based altimeter.
Shock cord: 5/8″ tubular Kevlar 40′ two each
Recovery: two each 72″ parachutes.
Design: (3fnc) Three fins and a nose cone. Booster section to house the motor and drogue shock cord. Electronics bay. Upper air frame section for main parachutes.
Simulation: Roc Sim software.
Launch date: September 2009
Launch location: Balls (Black Rock Desert)
I also need a name for this rocket. Suggestions are welcome.
More details coming up.
