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Joined Jan 2013
364 Posts
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Blue edge blade
Listen to the difference ...im tryen to find better pic of the blades video has audio ...big difference.looks like most helis designed have 5 blades but theres some flap on theblade as well.i might dig into wikileaks and see if anythi.g is posted there http://www.aviationweek.com/Blogs.as...1-ae29820a4a62 |
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United States, TX, San Antonio
Joined Feb 2007
12,911 Posts
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Hi A,
I've flown multicopters with tri-blades and quad-blades over the years experimentally and while there is a difference in sound, the db level is not significantly different for props size at the same RPM. The main reason the better performing multicopters have 2 blades is because of their lighter mass and responsiveness of the 2-bladed prop and motor to the PID commands from the flight controller. Not trying to discourage you from your goal, just know that the path has been well-traveled. The quietest large multicopters have low Kv motors of about 300kv and swing large two-bladed props of about 16 inches and 5 or more pitch. The "Blue-edge" rotor technology might help, but I'm not holding my breath for that one for RC use... ![]() Also see: Are More Propeller Blades Better? - Air and Space Magazine Cheers, Jim Quadrocopter and Tricopter Info Mega Link Index Quote:
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Limited Freebie (balance charging cable): http://www.rcgroups.com/forums/showp...9&postcount=30
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UDI U817: http://www.banggood.com/Wholesale-Ud...9-p-53890.html
With CAMERA module: http://www.banggood.com/Wholesale-Ud...1-p-64259.html |
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Quote:
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Joined Jun 2012
1,009 Posts
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Quote:
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Joined Jun 2012
1,009 Posts
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One transmitter to rule them all....http://www.banggood.com/Wholesale-Wl...2-p-63784.html
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Joined Jan 2013
4 Posts
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Dunno if you guys have seen this yet: http://www.bitcraze.se/2013/02/pre-order-has-started/
It's an open development platform, and not really a bind/fly type solution, but it's tiny at 9*9cm, if a tad expensive, but interesting nonetheless
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