I'm in final stages of prepping my first big 2-stage I'll be launching at Airfest next week (I am giddy with excitement).
4" Wildman Argonia (11'9") L1090 in the booster and K250 in the sustainer
I have three questions and would love input. I already tried searching but didn't find answers.
* Do I use shear pins to secure the aft sustainer airframe?
Seems like I should to avoid drag separation in both sustainer sections, but figured I'd ask to make sure this is correct.
Planning for 4 4-40 shear pins in each (maybe this is overkill, might leave one out and go with 3. Trying to figure out the math now)
* I'm using a Flyaway rail guide. Is a single Flyaway Rail Guide placed on the Booster OK? Or do I need two rail guides? Or should one be placed on the Sustainer?
* When setting up at the pad, what is the best order of operations for installing the sustainer igniter?
Given the size of the rocket it will be tough to install the sustainer igniter when it is upright, and should the flight computer already be armed? (Blue Raven)
Seems a bit scary to be installing the igniter into an armed sustainer if it isn't upright on the pad.
Here is what I am thinking for at the pad:
Install and secure the igniter into the sustainer (dowel and tape).
Load the rocket onto the rail and point upward
Arm the flight computers
Install the booster igniter
Thanks!
Jason
4" Wildman Argonia (11'9") L1090 in the booster and K250 in the sustainer
I have three questions and would love input. I already tried searching but didn't find answers.
* Do I use shear pins to secure the aft sustainer airframe?
Seems like I should to avoid drag separation in both sustainer sections, but figured I'd ask to make sure this is correct.
Planning for 4 4-40 shear pins in each (maybe this is overkill, might leave one out and go with 3. Trying to figure out the math now)
* I'm using a Flyaway rail guide. Is a single Flyaway Rail Guide placed on the Booster OK? Or do I need two rail guides? Or should one be placed on the Sustainer?
* When setting up at the pad, what is the best order of operations for installing the sustainer igniter?
Given the size of the rocket it will be tough to install the sustainer igniter when it is upright, and should the flight computer already be armed? (Blue Raven)
Seems a bit scary to be installing the igniter into an armed sustainer if it isn't upright on the pad.
Here is what I am thinking for at the pad:
Install and secure the igniter into the sustainer (dowel and tape).
Load the rocket onto the rail and point upward
Arm the flight computers
Install the booster igniter
Thanks!
Jason