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Cross Form Parachute and More

A project log for High Power Experimental Rocket Platform

Experimental high power rocket with active stabilization, live telemetry, autonomous GPS guided recovery and HD video

j-m-hopkinsJ. M. Hopkins 01/14/2016 at 22:460 Comments

This weekend is my next club rocket launch. After last month's motor failure I have built a new rocket and several parachutes to accommodate the lighter airframe.

You can see from the above picture the high contrast color scheme with asymmetric coloring for rotation analysis.

The seams are full French fell seams with aggressive hatched over stitch.

Contrary to normal cross form parachutes this design utilizes two darts per arm, giving a slight curvature and hopefully slightly higher Cd when compared to standard designs.

This parachute will be deployed at 1,000 feet AGL and the drogue from last post will be at apogee.

The new motors that will be flown are actually larger than last month, but will be operating at a lower pressure, even though having a higher mass flux. They are nearly 20" long, utilizing nearly 1-1/2lbs of fuel.

The obligatory storage case turned out quite well, with room for the drogue on top.

The new airframe will be painted tonight and the AV bay and final prep work will be done tomorrow.

Using a mock up I've successfully tested my ejection charges as well, so all in all the program is getting back on track!

There might be a Mobius action cam running on this next rocket, so that should be interesting as well.

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