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mdnanwelch7(at)hotmail.co Guest
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Posted: Sat Mar 31, 2007 3:29 am Post subject: Torque effects reduced |
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Ed in JXN,
You failed to mention in your explaination of "p" factor, and
gyroscoptic moments that the effects of torque on your airplane can be
GREATLY reduced by thoroughly cleasing your propeller
with "Bubba Jones' PURIFIED PROPWASH". (available at only the best
aviation parts suppliers.)
Mike in SW Utah
[quote]From: "Ed Chmielewski" <edchmiel(at)mindspring.com>
Reply-To: kolb-list(at)matronics.com
To: <kolb-list(at)matronics.com>
Subject: Re: Re: Rudder Trim tabs for MIIIC w/ 912UL
Date: Fri, 30 Mar 2007 22:42:34 -0400
Hi David,
The culprit is a combination of forces present in all single-engine
prop-driven aircraft (and most twins), too. They are:
Torque: The twisting force the engine exerts on the prop.
Spiraling slipstream: The 'corkscrew' effect of the airflow over
the aircraft structure, especially the tail group.
Gyroscopic precession: Think of the prop as a huge gyroscope,
which it is.
'P' factor: The uneven (asymmetric) loading of the prop, more
prevalent at slow airspeeds and high angle-of-attack.
The need for trim tabs isn't the fault of the designer. Maybe Sir
Isaac Newton.
The forces most prevalent in cruise are torque and spiral
slipstream. A good explanation for things like this is "The Pilot's
Handbook of Aeronautical Knowledge", AC 61-23(X?), I don't know what the
latest version is. You can order it from the GPO or Sporty's
(sportys.com).
For those desiring even more punishment, "Aerodynamics for Naval
Aviators" should keep you occupied. Recommended only for those lacking any
type of social life.
Ed in JXN
MkII/503
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knowvne(at)aol.com Guest
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Posted: Sat Mar 31, 2007 5:43 am Post subject: Torque effects reduced |
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HAHAHAHAHAHAHA
Mike
Does that come in Powder or a Liquid?
hahahaha
Mark Vaughn
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David Lucas
Joined: 10 Jan 2006 Posts: 79 Location: Europe. based Amsterdam NL
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Posted: Sat Mar 31, 2007 2:29 pm Post subject: Re: Torque effects reduced |
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Quote: | "Bubba Jones' PURIFIED PROPWASH". (available at only the best
aviation parts suppliers.) |
You'll find it just down the aisle opposite the Sea Foam stocks !
David.
Do Not Archive !
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Ed in JXN
Joined: 24 Mar 2006 Posts: 122
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Posted: Mon Apr 02, 2007 9:46 am Post subject: Torque effects reduced |
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Hey Mike,
Too funny! Somebody beat me to it with the 'Seafoam' comment, too.
I would've gone on to explain about the influence of the flux
capacitor, but didn't want to bore anyone with the obvious.
Ed in JXN
MkII/503
Do Not archive
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