 |
I used an A10-3T as an upper stage motor one time, and the
result was a zipper. 3 seconds is just too short a delay, but there
are no long delay sustainers in the T-motor series; the A3-6T is long
gone.
A friend issued a challenge to make a 2-stage rocket which could withstand the
short delay. I thought something fat and draggy with a long shock
cord should do the trick, so I came up with this. Rocksim says it's
not so draggy, but I think it looks kewl. It uses BT-55 airframe
tapering to a BT-5 motor tube,
The upper fins were inspired by the Midget. I had planned to share
a booster with my Tridget, but after acquiring
some old MPC B3 booster motors (2.5"x13mm), I decided to build this extra
long Midget-style booster to use that motor. We'll see how things
work out. It could easily fall victim to a cato using those old motors,
so I plan to first fly it on some newer standard T-motors before exposing
it to the higher risk MPC motors.
With the long taper, the launch lug placement was a little more complicated.
I solved that by putting the lower lug on the fin. |
