Comments on: How I Solved the Helicopter Problem (Sep, 1930) http://blog.modernmechanix.com/2008/06/26/how-i-solved-the-helicopter-problem/ Yesterday's tomorrow, today. Fri, 10 Feb 2012 21:07:04 +0000 hourly 1 http://wordpress.org/?v=3.1.4 By: Paul Robbins http://blog.modernmechanix.com/2008/06/26/how-i-solved-the-helicopter-problem/comment-page-1/#comment-1102787 Paul Robbins Wed, 25 Jan 2012 23:58:24 +0000 http://blog.modernmechanix.com/?p=4691#comment-1102787 What you need is :- Radio Control Helicopter Models by John Drake ISBN 13: 9780852425190 ISBN 10: 0852425198 What you need is :-
Radio Control Helicopter Models
by John Drake
ISBN 13: 9780852425190
ISBN 10: 0852425198

]]> By: dheeraj http://blog.modernmechanix.com/2008/06/26/how-i-solved-the-helicopter-problem/comment-page-1/#comment-1079899 dheeraj Thu, 05 Aug 2010 18:02:49 +0000 http://blog.modernmechanix.com/?p=4691#comment-1079899 sir, i m a student and i m trying to build a rc heli craft. sir i want to know that what should be the size of blades? and how much weight it could lift? i came to know a formula L = CL * d * [ (V*V)/2 ] *A where CL= coefficient of lift d=density of air V= velocity of air A=wing area sir i want to know what the value of CL and what is A(wing area)?- is it actual physical area of two or four blades OR its the area of rotator disk? sir plz help me out thanking you........... sir,
i m a student and i m trying to build a rc heli craft.
sir i want to know that what should be the size of blades? and how much weight it could lift?

i came to know a formula

L = CL * d * [ (V*V)/2 ] *A

where
CL= coefficient of lift
d=density of air
V= velocity of air
A=wing area

sir i want to know what the value of CL and what is A(wing area)?- is it actual physical area of two or four blades
OR its the area of rotator disk?

sir plz help me out
thanking you………..

]]> By: JakeofAllTrades http://blog.modernmechanix.com/2008/06/26/how-i-solved-the-helicopter-problem/comment-page-1/#comment-1057507 JakeofAllTrades Sun, 29 Jun 2008 17:16:01 +0000 http://blog.modernmechanix.com/?p=4691#comment-1057507 Wow Wee Toys' new RC helicopter, the BladeStar, operates on the same principle. Perhaps there is something to it! http://www.rchelicopter.com/2008/01/29/wowwee-announces-flytech-bladestar-rc-helicopter/ Wow Wee Toys’ new RC helicopter, the BladeStar, operates on the same principle. Perhaps there is something to it!

http://www.rchelicopter.com/20.....elicopter/

]]> By: Justin M http://blog.modernmechanix.com/2008/06/26/how-i-solved-the-helicopter-problem/comment-page-1/#comment-1057395 Justin M Fri, 27 Jun 2008 01:44:07 +0000 http://blog.modernmechanix.com/?p=4691#comment-1057395 I don't see much for yaw control ... granted, the propellers on the "wings" won't torque the body in the opposite direction like a modern helicopter's engine does, but you would like to point the thing in one direction or another while hovering. That and a lot of complexity shows why this idea didn't stick around. There was a similar idea much later however. Without the tails on each wing, and with small jet engines (or rockets!) in place of propellers and drive shafts, you have a tip-jet rotor helicopter. http://www.aerospaceweb.org/question/helicopters/q0141.shtml I don’t see much for yaw control … granted, the propellers on the “wings” won’t torque the body in the opposite direction like a modern helicopter’s engine does, but you would like to point the thing in one direction or another while hovering. That and a lot of complexity shows why this idea didn’t stick around.

There was a similar idea much later however. Without the tails on each wing, and with small jet engines (or rockets!) in place of propellers and drive shafts, you have a tip-jet rotor helicopter.

http://www.aerospaceweb.org/qu.....0141.shtml

]]>