Dave Herbert wrote:*Please read before commenting* This "Proof of Concept" is tested by using a full lifting, powered rotor head. This is not an autogiro. I have been informed that others have tried this in other countries but I did my own design on my own. Kudos to those who have done this already. "He who dares nothing, need not expect anything" is my motto. Since making a video 3 days ago on Single Bladed Props for airplanes, I have been asked if the theory could be applied to helicopters. I guessed yes, but needed to find out for sure.
The theory says "one blade causes some turbulence that is encountered by the other blade. Remove the one blade and make the single one a bit longer. It will use less power and be quieter. Using my Kyosho Hyperfly Apache as a test bed, I have come up with a flying machine that is quieter, uses less power, and is just as maneuverable, if not more than the stock setup. On top of that, it has no tail rotor to boot!
I have submitted the concept to my patent attorney to see if a missing blade constitutes warranting a patent, but I doubt it. So you may find more and more 1 bladed flying machines come into being after this proof of concept video gets analyzed. If so, great, for that is what drives us all to succeed, however. I think the reason a lot of our equipment is manufactured overseas, is because people here are afraid to try stuff, fearing danger or failure based on guesswork. But for me, I will try anything, no matter how wild, win or lose and will present the truth. Also Note, I tried it on the Blade MSR first, having to use a bigger blade as per theory, and of course bigger counterweight. It flew very low in ground effect, but no higher, as the counterweight for the bigger rotor blade, exceeded the power of that tiny heli. So for that reason, I had to use a bigger heli that was capable of more lift. I decided the 1-2/3 lb. NOTAR Hyperfly would be a good choice, as it flies without a tail rotor and adds to the mystique. And believe me, as the designer, it flies better than it ever did.
Definition of a helicopter on the Web: * an aircraft without wings that obtains its lift from the rotation of overhead blades wordnetweb.princeton.edu/perl/webwn
Stay tuned for more experiments like this and thanks kindly for all your support and subscriptions.
Best Regards, Dave Herbert Academy of Model Aeronautics # 8221 Contest Director, Leader Member, Scientific.
udah lama mo nyoba, tapi ga tau mo bikin counter weight nya dari apa... lumayan kan buat ngirit crash cost...
Dave Herbert wrote:*Please read before commenting* This "Proof of Concept" is tested by using a full lifting, powered rotor head. This is not an autogiro. I have been informed that others have tried this in other countries but I did my own design on my own. Kudos to those who have done this already. "He who dares nothing, need not expect anything" is my motto. Since making a video 3 days ago on Single Bladed Props for airplanes, I have been asked if the theory could be applied to helicopters. I guessed yes, but needed to find out for sure.
The theory says "one blade causes some turbulence that is encountered by the other blade. Remove the one blade and make the single one a bit longer. It will use less power and be quieter. Using my Kyosho Hyperfly Apache as a test bed, I have come up with a flying machine that is quieter, uses less power, and is just as maneuverable, if not more than the stock setup. On top of that, it has no tail rotor to boot!
I have submitted the concept to my patent attorney to see if a missing blade constitutes warranting a patent, but I doubt it. So you may find more and more 1 bladed flying machines come into being after this proof of concept video gets analyzed. If so, great, for that is what drives us all to succeed, however. I think the reason a lot of our equipment is manufactured overseas, is because people here are afraid to try stuff, fearing danger or failure based on guesswork. But for me, I will try anything, no matter how wild, win or lose and will present the truth. Also Note, I tried it on the Blade MSR first, having to use a bigger blade as per theory, and of course bigger counterweight. It flew very low in ground effect, but no higher, as the counterweight for the bigger rotor blade, exceeded the power of that tiny heli. So for that reason, I had to use a bigger heli that was capable of more lift. I decided the 1-2/3 lb. NOTAR Hyperfly would be a good choice, as it flies without a tail rotor and adds to the mystique. And believe me, as the designer, it flies better than it ever did.
Definition of a helicopter on the Web: * an aircraft without wings that obtains its lift from the rotation of overhead blades wordnetweb.princeton.edu/perl/webwn
Stay tuned for more experiments like this and thanks kindly for all your support and subscriptions.
Best Regards, Dave Herbert Academy of Model Aeronautics # 8221 Contest Director, Leader Member, Scientific.
udah lama mo nyoba, tapi ga tau mo bikin counter weight nya dari apa...
lumayan kan buat ngirit crash cost...
lumayan kan buat ngirit crash cost... -> benerr banget ...
Re: Single blade?
Posted: 03 Oct 2012, 11:12
by ahmadbenny
DedDredd wrote:teknik ini bisa diterapkan pada propeler pesawat yang patah salah satunya, bahkan katanya akan lebih menghemat batre... Sepertinya cocok diterapkan pada aeromodeller yang minimalis realistis.... tapi kira2 efeknya apa ya kalo dipake dalam jangka panjang...
Saya ada ide om........gmn om deddredd cobain d heli'y... pasti heboh nih d gaero..........
Re: Single blade?
Posted: 03 Oct 2012, 12:41
by DedDredd
ahmadbenny wrote: Saya ada ide om........gmn om deddredd cobain d heli'y... pasti heboh nih d gaero..........
Heehehehehe, sebenarnya pengen coba, cuman waktunya yg belum ada...
Re: Single blade?
Posted: 03 Oct 2012, 13:04
by ahmadbenny
DedDredd wrote:
ahmadbenny wrote: Saya ada ide om........gmn om deddredd cobain d heli'y... pasti heboh nih d gaero..........
Heehehehehe, sebenarnya pengen coba, cuman waktunya yg belum ada...
Kalau dah siap dan waktu'y ada kasih kabar om,nanti saya jadi kameramen'y........
Re: Single blade?
Posted: 03 Oct 2012, 13:07
by liloterbang
Sayang kemarin2 propeler (airplane) yg patah pd dibuangin.. banyak yg cuma patah sebelah ..
nanti mau pake cara gini juga .... pasti bisa juga (kaya'nya) s
Re: Single blade?
Posted: 03 Oct 2012, 16:25
by justinus
Ga ada lagi masalah blade kelihatan dobel.
Re: Single blade?
Posted: 03 Oct 2012, 17:36
by DedDredd
justinus wrote:Ga ada lagi masalah blade kelihatan dobel.
Betul Suhu, nggak ada out of track lagi....ngirit waktu juga buat setting pitch...
Re: Single blade?
Posted: 04 Oct 2012, 00:47
by agusfirmansyah
DedDredd wrote:
justinus wrote:Ga ada lagi masalah blade kelihatan dobel.
Betul Suhu, nggak ada out of track lagi....ngirit waktu juga buat setting pitch...
di RC Helli kan ada double blade(coaxial), single blade,dan 3 blade rotor head, nah kalau yang ini kan bladenya sepauh....... apa namanya yaaaa.......
tapi kira2 efeknya apa ya kalo dipake dalam jangka panjang... 
pasti heboh nih d gaero.......... 
s