Full Scale Coaxial Heli
#1
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Full Scale Coaxial Heli
I was looking around doing some research on starting a career as a heli pilot (never taken the sticks of a real heli, but have flown a UH-60 full motion simulator), and stumbled across PHPA's (Professional Helicopter Pilot's Association) website. I noticed that they had a heli screensaver, so I downloaded it and installed it on my computer. While watching the images of Eucril's, Jet Rangers, MD/Hughes 500's, KMaxes and the like, one in particular caught my eye. A counter rotating, coaxial helicopter!!! I stopped in my tracks to do a double take, as I've never heard of or seen a full size heli like that. I've seen and flown in CH-47's, seen pics of the KMax, and seen pics/videos of the CH-46, but never one with the blades right on top of each other, such as seen on the current breed of coaxial electric RC helis. It was late when I noticed it, so I didn't look it up until just a bit ago. Difficult to find info on when you don't even know who makes the thing or a model number. After a few minutes of searching, I stumbled on an engineer's forum that was talking about coaxial rotor heads, and low and behold, there was a link to one that was done. I followed the link, and guess what. It was the same type in the picture on the screen saver. Come to find out, it's a Russian made Kamov KA-32A, found [link=http://www.aerospace-technology.com/projects/kamov32/]here.[/link]
Whoa!!! While I was posting this, I went to Google to look for a company page or something of the like, and found a timeline of Kamov helicopter's production, found [link=http://www.aviastar.org/helicopters_eng/kamov.html]here.[/link] They have made several models, including the V-80/KA-50 "Black Shark" attack helicopters. Just about all of their models have been coaxials, except for the late 1990's (about 1998), when they made a couple of "standard" configuration helis. Cool.
Now if only the RC companies would make a fuselage that looks like that for their coaxials, we could actually have scale counter rotators, ushering in a new era of scale RC helis. People would be stuck with more counter rotating Jet Rangers, Blackhawks, Bell 222's, etc... if they were to do that. They could choose them if they wanted, but they would have the choice of getting a fuse that would actually make it more "true scale" (same fuse design and head configuration as the full size) vs. the current "partial scale" (same fuse design, but with a coaxial head instead of the single main + tail rotor of the full size). I wonder how a larger nitro, gas or turbine version would fly, hmmmm.
Just thought I'd share this find with the RCU heli community for those who are like me and never heard of a full scale coaxial.
Happy flying.
Whoa!!! While I was posting this, I went to Google to look for a company page or something of the like, and found a timeline of Kamov helicopter's production, found [link=http://www.aviastar.org/helicopters_eng/kamov.html]here.[/link] They have made several models, including the V-80/KA-50 "Black Shark" attack helicopters. Just about all of their models have been coaxials, except for the late 1990's (about 1998), when they made a couple of "standard" configuration helis. Cool.
Now if only the RC companies would make a fuselage that looks like that for their coaxials, we could actually have scale counter rotators, ushering in a new era of scale RC helis. People would be stuck with more counter rotating Jet Rangers, Blackhawks, Bell 222's, etc... if they were to do that. They could choose them if they wanted, but they would have the choice of getting a fuse that would actually make it more "true scale" (same fuse design and head configuration as the full size) vs. the current "partial scale" (same fuse design, but with a coaxial head instead of the single main + tail rotor of the full size). I wonder how a larger nitro, gas or turbine version would fly, hmmmm.
Just thought I'd share this find with the RCU heli community for those who are like me and never heard of a full scale coaxial.
Happy flying.
#3
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RE: Full Scale Coaxial Heli
Very cool "Alligator". To bad none of the major scale manufacturers make a .50 or .90 size glow/electric version of it. I guess that system with collective pitch (vs. fixed pitch on the beginner RC coaxials) mandates a larger bird.
Happy flying.
Happy flying.
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RE: Full Scale Coaxial Heli
That is awesome! I'm still drooling over the pictures from his build. I'm still trying to get the mental picture of how yaw is controlled with his rudder servo. I read the part about it but it's still confusing me.
Anyway, back on topic. Those Kamovs are very cool. I wouldn't mind flying the Ka-115. I haven't heard much of it's progress lately.
Anyway, back on topic. Those Kamovs are very cool. I wouldn't mind flying the Ka-115. I haven't heard much of it's progress lately.
#7
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RE: Full Scale Coaxial Heli
ORIGINAL: mydartswinger
Doesn't speak well for the quality of the aircraft.
Doesn't speak well for the quality of the aircraft.
Are you referring to the engine shutting down and the heli autoing down?
Engines stop all the time for various reasons. The fact that the heli was able to auto down (and I'm assuming that it landed in one piece) speaks volumes for the design, and the skills of the pilot. The engine shut down although important is out of the control of the designer.
Rafael
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RE: Full Scale Coaxial Heli
Are you referring to the engine shutting down and the heli autoing down?
Engines stop all the time for various reasons.
Engines stop all the time for various reasons.
The fact that the heli was able to auto down (and I'm assuming that it landed in one piece) speaks volumes for the design, and the skills of the pilot.
The engine shut down although important is out of the control of the designer.