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Hey, I resemble that comment! Yes, here is the you tube link of the test that Dan hosted on his website. https://youtu.be/9rGubnIWpfA If you look into my videos, you will see the view from the cockpit as well. :) CJ |
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Hey Cap'n John, I searched and found nothing. How about coughing up the build details?
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I was only the project manager. It is basically a copy of Dan's. They both employ the bungee release mechanism, but the one we built runs on a linear actuator instead of a mechanical release. This allows you to trigger with a single power wire.
;) CJ |
Yes, CJ commanded the project and BillyH engineered it. I just supplied parts. Actually there were three projects of similar launchers under way in different parts of the country but two hasn't matured yet. One is very attractive it's a machined tube with manual cable activation and controlled flow head.
The one our kolkhoz built is below. FSDO looked at it and recommended 5 hours of flight testing which I did. ![]() This is the bombardier panel hard wired to the cockpit. ![]() First "rider" was John's flying dog Wyatt. A writeup is here. We had a lot of fun. The launcher attaches to an inspection cover and bolted to the tie down. Gives you some yaw. We tweaked the front hatch a bit and it can open now at 120 knots. Thanks DanH for a leverage idea and calculations. Several prominent aviators are waiting for the ride but our schedule and wx often don't match. I did some mods to the launcher replaced electrical connectors with more robust and weather proof automotive. Thanks Julian for help. If anybody wants to borrow the device please feel free to pickup. Captain John also has a modified attach point. ![]() ![]() |
My attach point will fit 7 and 8 wings. Let me know if you want to borrow it.
;) CJ |
Design work and experiment before launch
A friend of mine designed a release mechanism to drop the ashes out the window of his Cessna. He said when he opened it, most of the ashes ended up in his mouth and ears and down his shirt. His passenger was the widower. Not much was said after they both consumed the ashes. After they landed I knew something wasn?t right when I opened his door and the shear volume of powder in his lap, nose, and ears. I couldn?t help but get tickled about it but he didn?t find the humor, especially since he later claimed it gave him an upset stomach for two days.
I suggest filling your device with talcum powder and trying it out before family arrives. Good luck! |
Venturi design
I always thought if I did this that I?d design a hopper with a Venturi in the bottom. I had a friend who had been a crop duster, and after he retired he started flying radio controlled models. He built a hopper for one of his models that he could put Sevin garden powder in and dust his garden.
The bottom of the hopper had a venturi of rectangular cross section with a simple 90 deg valve in the throat operated by a servo. I did see it on display but I never got to see him demonstrate it. He claimed it would suck all the powder from the bottom of the hopper. Every time this topic of spreading cremains comes up, I wonder if Jack?s garden duster design would work. |
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I did practice a dispersal before my mate's 'final flight', but if you do plan on trying something like this - particularly if you have the wife/husband/son etc going with you - perform a test run first. I used ground concrete dust & tiny pebbles I had on hand, which turned out to be a very good simulation when viewed against the real thing. The actual flight is not the time to find out you have botched your design for their loved one. :eek: |
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