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Mpeirwe David, e-mail, 01.02.2017 08:35
technology is a good thing. I would love to own this small helicopter for personal use if it was in my means.
Gerald L. Wiles, e-mail, 14.07.2016 20:34
Whoops! I goofed. My earlier answer to Marc de Poinlenc was mixed up, being more about Aeromarine's Navy smokescreen generator than the pj for AHC. The "Siamese" pj we made for AHC was a single power plant but utilized 2 separated tailpipes and one blended com-bustion chamber; there was no gate valve in the system. The c-cs were about 6 in. diameter but were joined into a figure "8", making them about 12 in. wide. The exhaust pipes were about 3.5 in. dia. and 15 in. long. A single, 11 in. wide X 3.5 in. high bank of reeds was incorporated, vaguely similar to those in the Argus pj that powered WWII's V-1. However, our reeds were I piece, ea., and were left flat rather than being curved as in the V-1. Jerry
Gerald L. Wiles, e-mail, 14.07.2016 19:14
To Marc de Piolenc, I'm answering your question after a delay of 3 years! Sorry. Aeromarine's pj for American Helicopter was composed of 2 blended sections. Its combustion chambers and tailpipes were separate. A gate valve was placed between the c. chambers,just downstream of the reed valves,and their exhaust outlets were merged into a single, larger discharge. With the gate being closed, one of the sections was started normally then the gate was opened. hot gasses from the operating section then blasted into the idle section, inducing air and fuel to flow into it. The heat ignited the fresh charge, starting a flow through the second tailpipe. Almost instantly, the 2 sections became synchronized and they continued operating as a single pj. Jerry
Marc de Piolenc, e-mail, 21.08.2013 08:58
This is a question for Gerald Wiles: what do you mean by "Siamese" pulsejet? Could you elaborate or perhaps give a link?
Gerald L. Wiles, e-mail, 23.05.2013 21:10
In 1951-52, Aeromarine Co. (originators of the Dyna-Jet,) created a Siamese p-j for powering the AHC XA-6. I helped in its being tested and shipped to AHC. They enclosed it in a dedicated housing that improved performance but we were never credited.
Mike, e-mail, 26.03.2012 08:55
My comment is in response to the question that Thomas made. I'm not sure of you'd received an answer yet but there is no torque to counter act against as yhe locomotion to drive the rotor is generated at the blade tips and not through a conventional gearbox mounted to tge air frame. The rudder/ air foil in the rear allows the aircraft to yaw from both the down wash of the rotor and the force of the air moving around the aircraft while in forward flight (relative wind). Well, I hope that my two cents worth makes at least a little sense to you. I've always loved these weird type of flying contraptions too. Best Regards
Thomas, e-mail, 15.11.2011 03:26
What I'd like to know, is what counteracted the torque of the rotor? I dont see anything on the tail. Would the pilot just hold the rudder slightly faced in a certain direction?
Romain, e-mail, 29.05.2009 11:58
Hi, does anybody have some details about this project. I would be very happy to know more about this. If you can provide information, please contact me. Regards.
kiran, e-mail, 20.04.2009 16:37
will u send me model sketch of your project let me know something about your project please
emmy samuel, e-mail, 03.05.2007 03:25
i must say it is the world most tiniest invention, for personal and hobby use. it a good work keep it up, cheer the world tiniest vtol ever built.
Dr. Layth.A.W.Ayoub, e-mail, 12.02.2007 16:03
Nice ultralight project,easy to built,easy to drive ,easy to transfer,with no moving parts engine, but with high noise.I encourage developing it for personal local use with changing pulse jet to ramjet so its pulsed noise may be reduced when it becomes continious. Thank you for this picture.I like to keep contact with you .I remain
