Don Perry's Rocketry Experiments
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Odor-less BP test
donperry1
50 views
71 KnO3, 23 Charcoal (coffee grinded), 4 sulfur
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Ejection Piston test - way more powerful than expected
donperry1
19 views
This is a failed test with quarter tablespoon of KNo3/sugar in the ejection piston. I stuffed the parachute tightly inside the tube and yet the piston was able to do this! ...
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Hurricane Rocket Model
donperry1
4 views
Model I made with Rocksim Demo
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Nichrome vs bridgeless igniters
donperry1
30 views
For my 12.5 seconds parachute deployment system
I wanted to see if the dipped - bridgeless igniters were capable to produce consistent results.
the dipped igniters are no...
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Nosecone From Body Filler
donperry1
64 views
Best one I've made so far. Two coats of filler, one each day for two days. The mold was made out of wood and a condom acted as the sheet for quick release of the cone.
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Deployment Timer Test
donperry1
22 views
Ejection Timer test with fingernail quantity of BP
Schematics of timer: http://2.bp.blogspot.com/-bI7A29dcYxI/Ty8n1Qt-SEI/AAAAAAAAA2o/B6dxDL60p9U/s1600/Untitled.png
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Ejection Timer Test
donperry1
45 views
555 IC used in 14 second ejection device
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Ejection plunger first attempt
donperry1
56 views
Visit http://www.PVCrocketry.com
PVC piston made from epoxy.
Will try other compounds soon.
(polyurethane, RTV silicone, etc)
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I class motor test (I-574)
donperry1
63 views
I need to test 2 more of these before I can launch it. This motor a little over the safe pressure limit. Max pressure estimated at 900psi.
specs:
1.25 ID
2.5 length grains...
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Drifting in CVM
donperry1
49 views
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