My 4" Madcow Patriot Build

[Ez2cDave]

Still more . . .

 

[Doug Rocket]

This is great thanks!!

 

[Doug Rocket]

Thanks for the schematics! Now I'm filling the gaps in the fins and the tailcone.

 

[Doug Rocket]

Mixed up some sawdust and wood glue. Worked great on a test piece.

 

[Doug Rocket]

Back on track after a little hiatus. Sanded down side rails, drilled holes for two #2 shear pins on the nise cone

 

[Doug Rocket]

Just did my ground test for drogue section. I used 1.6grams black powder. Based on the extension probably a bit much on BP. Motor I'm using Aerotech J270 has about 1.4 grams. Rocksim says to use 0.98g.

I already did main ground testing. Using .95 grams of black powder with two shear pins. I used the new Rocksim tool to compare. Rocksim said to use about 0.9 for a 9psi internal pressure.

 

[ZeroGPrints]

Just did my ground test for drogue section. I used 1.6grams black powder. Based on the extension probably a bit much on BP. Motor I'm using Aerotech J270 has about 1.4 grams. Rocksim says to use 0.98g.

I already did main ground testing. Using .95 grams of black powder with two shear pins. I used the new Rocksim tool to compare. Rocksim said to use about 0.9 for a 9psi internal pressure.

Is the motor eject just a backup for the drogue or are you not using electronics for the drogue?

 

[Doug Rocket]

Is the motor eject just a backup for the drogue or are you not using electronics for the drogue?

I'm using the motor ejection as primary and then electronics as backup for the drogue secrion.

 

[Doug Rocket]

Finally painted and got my Stickershock decals on.

 

[Doug Rocket]

Successful L2 launch at NSL East!

 

[Doug Rocket]

Flew on a J270-14 to about 2669ft. It leaned over a bit right after launch so not a completely straight up launch...perfect weather.

 

[bad_idea]

Successful L2 launch at NSL East!

Congratulations!