Rocket Tuning - Propellant Burn-Rate Test
Date: 2006-04-11
Description
A quick burn-rate test for a new batch of 7:3:1 meal to determine its usability for core-burning rockets. Standard 1/4" x 2" pyrotube burn rate test.
Comments
Fairly fast; 7.3 mm/s.
Perhaps too fast for core-burning rockets, all "standard" core-burners over 1/4" I've built before have used propellants with a burn rate below 6 mm/s. CATOs are very likely I'd say, but "old 6:3:1" at 5.4 mm/s has been noted for being quite cool for 2 oz, and fairly cool for 4 oz motors.
RP is a little quicker at 7.5 mm/s, but the geometry of the rockets it was designed for is quite different, a shorter core and a narrow nozzle. Other users of RP have mentioned it is quite suitable for standard 4 oz motors, but I have no burn-rate figures from them to compare. I use quite hot charcoal in my RP, while they may use standard airfloat.
Only a test with a rocket will prove it one way or the other.
Attachments
| title | type | size |
|---|---|---|
| Test Video | video/x-msvideo | 4.355 Mbytes |
| Updated Result Table | text/html | 4.010 kbytes |