Mail to Robert DeHate
The sustainer will use dual deployment. For this I will
use Roctronics. I will also add some sort of redundancy.
I have concidered a
MAD for backup.
For sustainer ignition I will be using my "Simple Alt". I
have modified it by removing some of the connectors so that it would fit in the space between the 54mm MMT and the 4in BT.
I want it to check itself for safe conditions before lighting the sustainer.
Here is a flow chart of how I would like it to work. If you see any mods that will make it better let me know.
I could not find a reasonable source for the magnetic sensors so I may just use the accelerometer to detect motor burn out.
Terrier details.
I will fly the Terrier booster with and without the Sandhawk sustainer.
The first flight of the Terrier was
at NYPOWER 2001
. I flew it for my successful L2 cert.
Stats:
Diameter- 5.38
Length- ??in
(66in with nose
cone)
Weight- 8LB
Motor- J350,Pro38 J360,K550
MMT-54mm
Motor
retention- Aeropack with 54/38 adaptor
Launcher- Rail
Recovery- Rocketman R9C chute
Fins and Centering rings were made out of 3/16in ply.
I will fly the Sandhawk sustainer with and without the
Terrier booster.
The first flight of the Sandhawk will be in the two stage
format at NYPOWER 2002.
Then if all goes well I will also fly the Sandhawk
stand alone.
Stats:
Diameter- 4
Length- ~84in
Weight-
8lb
Motor- J360
MMT-54mm
Motor retention- Slimline with 54/38 adaptor
Launcher- Rail
Recovery- Dual deployment Drogue, Main Rocketman R7C chute
Fins and Centering rings were made out of 3/16in ply..
This unit attaches the 5.5in Terrier to the 4in Sandhawk.
Stats:
Diameter- 4 -5.5in
Length- ~8in
Weight- 1lb
Thanks to:
Virginia High Power Rocketry at http://www.vahpr.com/index.html
John Lyngdal (for the 5.5in tube)