View Single Post
Old 12-24-2010, 09:11 PM   #4
quorneng
Super Contributor
 
quorneng's Avatar
 
Join Date: Jul 2008
Location: Cheshire, UK
Posts: 1,639
Thanked 55 Times in 54 Posts
Club: A lone flyer!
Awards Showcase

Scratchbuilders Award  Scratchbuilders Award 
iTrader: (0)
Friends: (7)
Default

It is indeed a PC case fan. They are remarkably well balanced and it certainly runs happily up to about 12000 rpm.
My design is very loosely based on the Optica simply because it is a good practical layout for a fan. When does a prop become fan? The Optica had a 5 blades.
My Ductfan park flyer will be 36" span and weigh no more than 12oz. It is intended to explore the feasibility of the power system and layout.
I have got this far.
Click image for larger version

Name:	TrialAssy1.JPG
Views:	770
Size:	48.9 KB
ID:	140939
The ailerons will be cut out and the servos, radio and motor added before the top skin goes on.


quorneng is offline  
  Reply With Quote
 
Page generated in 0.03388 seconds with 18 queries