I've been kit bashing together a cluster that is a bit too heavy to use only BP motors (29mm core, 2x 18mm boosters). I'd like to be able to use Estes BP motors on the boosters because of the option to get 0 delay ones for fall-away boosters in flight. But I know I can't just wire together and ignite composite and BP at the same time because of different ignition speeds. I was thinking of making a flash pan that is initiated by the flame of the composite motor. One other complexity is that the boosters are displaced vertically and horizontally somewhat far from the core. I saw this "spider" contraption that has brass flame guides from a central BP pan. http://meatballrocketry.com/wp-content/gallery/articles/spider/spiderdwgnew1.pdf, and was thinking of making something like that out of brass tubes, with an open central pan and tiny hole, then more BP inside the larger tube. It would be secured to and kept upright by the the launch rail, before putting the rocket on. Any thoughts on this?
I know airstart is also an option, as is using all composites, but I am curious about if this approach seems feasible.
I know airstart is also an option, as is using all composites, but I am curious about if this approach seems feasible.