Mailing List flyrotary@lancaironline.net Message #28431
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: "P" factor? Re: Static Engine RPM
Date: Tue, 13 Dec 2005 00:15:27 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Ok, Thanks, Bob.
 
Sounds like a lot of airplane! 
 
Yes, sometimes luck is with you. It was done before I could even object by my quick moving nephew.    I think the volume of liquid took sufficient heat out of the fire (before the glycol reach it's own flash point), to put out the fire externally (on outside of the wheel pant).  But, it did buy us time to get a real fire extinguisher on it before it could ignite the wheel pant (and glycol) again.  As I said, sometime luck is with you. 
 
Thinking about getting a couple of  a big fire extinguisher and mount one on each side of the fuselage pointed at the wheels - to be automatically activated when the brake temps reach 400F {:>). 
 
All kidding aside, this was a potentially very serious combustion event and I have taken a number of steps to hopefully never encounter it again.
 
Ed
----- Original Message -----
From: Bob Darrah
Sent: Monday, December 12, 2005 11:37 PM
Subject: [FlyRotary] Re: "P" factor? Re: Static Engine RPM

Ed,
The SA-16 Albatross built by Grumman is a huge amphibian capable of open sea landings, powered by a pair of Wright R-1820 engines turning the same direction.  One big muther.
 
By the way, you are one fortunate guy.  That antifreeze that was used to put out your brake fire, well, it has a flash point of 220-260 degrees F, depending on where you look.
 
Bob Darrah 
----- Original Message -----
Sent: Monday, December 12, 2005 9:51 AM
Subject: [FlyRotary] Re: "P" factor? Re: Static Engine RPM

No familiar with the SA-16, Bob, but are both props turning same direction or opposite - would make a significant difference in whether there is a swirl (my spell checker says OK {:>)) effect or not.  If in opposite directions then I would agree, if both props rotating in same direction then harder to say.
 
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