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HYBRID MOTOR TIPS

 

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1. Arrangement for an L Class Hybrid Motor

SPECIFICATIONS: 
800 lb-sec total impulse at 150 sec and 350 psi.

Oxidizer Tank:
Dimensions
Weight
Volume
Wall Thickness
5-3/8 in OD x 17 in L 9-1/2 lbs with valve 220 cubic inches. Will take 5 lbs of N2O.
.13 in

Fuel grain - 22 cubic inches:

Grain ID
Burn Time
Surface Area
Length
G
Nozzle
Orifice
2 in
5 secs
345 sq in
55
.318
.456 in
.131 in
2"
10 secs
173 sq in
27-1/2"
.159
.322 in
.093 in
3 in
5 secs
--
36 in
.138
.456 in
.131 in
3 in
10 secs
--
18"
.069 (too low)
.322 in
.093 in

CONCLUSION: 
Use 2" grain with 10 second burn or 3" grain with 5 second burn.

2. Off the shelf (OTS) Rubber Hose successfully tested as Hybrid Fuel (1994). 


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