[NSRCA-discussion] Fw: Serious Torque on the Nose of the Model - RESUBMITTED

[Bob Kane]

Charlie was spot on with his comment on torque, but there are two torque vectors at work, the first is the obvious force required to turn the prop and the "equal but opposite" torque the motor transmits to it's mount. If that was all we had to worry about, the single mount would probably be fine. But there is the other torque (gyroscopic precession)  resulting from attempting to move a rotating mass in the pitch or yaw axis.  Here is a good youtube video demonstrating the effect . .. .  



http://www.youtube.com/watch?v=ty9QSiVC2g0


 
Bob Kane
getterflash at yahoo.com


________________________________
 From: mike mueller <mikemueller at f3aunlimited.com>
To: Bob Kane <getterflash at yahoo.com> 
Sent: Tuesday, December 4, 2012 4:34 PM
Subject: Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED
 

Say what?
"a large reactionary force called gyroscopic precession"
 I feel infinitlty smarter
 Is it violent warble?
 What prop were you running????
 Mike

From: Bob Kane <getterflash at yahoo.com>
To: "vicenterc at comcast.net" <vicenterc at comcast.net>; General pattern discussion <nsrca-discussion at lists.nsrca.org> 
Sent: Tuesday, December 4, 2012 7:54 AM
Subject: Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED


The Q80 has a large diameter rotating mass, and it brings with it a large reactionary force called gyroscopic precession when it is spinning.  In laymen terms it will strongly resist changing direction in yaw or pitch.  A rear brace would help keep this force in check. 

 

Bob Kane
getterflash at yahoo.com

From: "vicenterc at comcast.net" <vicenterc at comcast.net>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org> 
Sent: Tuesday, December 4, 2012 8:27 AM
Subject: Re: [NSRCA-discussion] Serious Torque on the Nose of the Model - RESUBMITTED

I understand that a rear brace is a must for this motor.  

Vicente "Vince" Bortone
Sent via BlackBerry by AT&T

-----Original Message-----
From:
 "Charlie Barrera" <charliebarrera at consolidated.net>
Sender: nsrca-discussion-bounces at lists.nsrca.org
Date: Tue, 4 Dec 2012 07:02:47 
To: <nsrca-discussion at lists.nsrca.org>
Reply-To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Subject: [NSRCA-discussion] Serious Torque on the Nose of the Model -
   
 RESUBMITTED

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