Mailing List lml@lancaironline.net Message #46413
From: Brent Regan <brent@regandesigns.com>
Sender: <marv@lancaironline.net>
Subject: Re: Recovery from wheel off runway
Date: Sat, 08 Mar 2008 23:04:47 -0500
To: <lml@lancaironline.net>
Mike writes:

<<<Brent,
 
I apologize for making any incorrect comparisons.  I based my statement on the NTSB report, here's a brief excerpt.
 
"The aircraft then veered further right off the runway as the pilot applied power for a go-around, with the aircraft eventually impacting conifer trees growing 30 feet south of the runway's edge."
 
 
Mike Easley
Colorado Springs>>>


No apology needed Mike. The NTSB text would be more accurate if "veered" was replaced with "continued".  The aircraft didn't veer until the right wing tip hit a series of trees. The attached photo shows the first , and only, skid marks from the left main tire. Note that they are already pointing at an angle to the centerline.

It should be understood that asymmetrical drag will cause the airframe to yaw but it will continue to travel in a straight line UNTIL it is acted on by a lateral force. During a taxi turn, differential braking causes the airframe to yaw and camber thrust on the tires accelerates the airframe to the new vector. If you don't believe me you can ask Newton.

Regards
Brent Regan

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