Hospital_Rocket
Well-Known Member
- Joined
- Dec 24, 2003
- Messages
- 4,009
- Reaction score
- 2
I have a question that may be weird to ask now - considering I want to do my L1 next week.
To date I have only used SU motors.
I opened up a G64 reload to practice assembling it, (The certification will be on an H165R) and looked at how it all goes together.
In a BP motor the fuel burns from the bottom up, and when it gets to the top, the delay starts burning, then the ejection charge pops. Simple....
In a composite, the fuel burns along the lenght of the grain, and the delay must begin burning at ignition. Does this mean what happens is the delay burs while under boost and essentially is just timed to last the delay period plus the burn period?
To date I have only used SU motors.
I opened up a G64 reload to practice assembling it, (The certification will be on an H165R) and looked at how it all goes together.
In a BP motor the fuel burns from the bottom up, and when it gets to the top, the delay starts burning, then the ejection charge pops. Simple....
In a composite, the fuel burns along the lenght of the grain, and the delay must begin burning at ignition. Does this mean what happens is the delay burs while under boost and essentially is just timed to last the delay period plus the burn period?
