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Date: Thu, 13 Dec 2007 13:42:39 -0800
From: Jason Pelc 
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-------- Original Message --------
Subject: 	Re: Copyright agreement
Date: 	Thu, 13 Dec 2007 13:22:47 -0500
From: 	LeRoy Alaways 
To: 	Jason Pelc 
References: 	<476172C9.5060200@stanford.edu>

Jason,

You have my permission to use the figures from my Ph.D. dissertation in 
your report and your website on the Physics of the Curveball and any 
other contributing website.

Dr. LeRoy Alaways
Villanova University

FYI in your report you state -- "This result, however, does not agree 
with the Kutta-Zhukovsky theorem from aerodynamics, which states that a 
net circulation of an inviscid fluid about a two-dimensional object 
results in a force proportional to the product of the velocity and the 
circulation [8]. " This is concerning Sikorsky ersonally talked with 
Ralph Lightfoot who 60 years ago did the work for Sikorsky. Watt's 
mistakenly assumes that the "circulation" in Drury's paper is angular 
velocity but in the 1950's and earlier "circulation" was also the term 
used for Lift Coefficient which is a dimensionless variable 
characterizing lift. Sikorsky did not violate the Kutta-Z theorem, he 
could have wrote that theorem.

On Dec 13, 2007, at 12:58 PM, Jason Pelc wrote:

> Hi Dr. Alaways,
>
> Thanks very much for agreeing to allow me to use work from your 1998
> Ph.D. dissertation entitled "Aerodynamics of the Curve Ball: An
> Investigation of the Effects of Angular Velocity on Baseball
> Trajectories".  If it's not too much trouble, please reply to this
> message indicating that you gr o figures from
> your dissertation on the internet as part of my report.
>
> Please find a .tar.gz of the report attached.  To view the report,
> simply open the index.html file in a web browser.  The report will also
> be "published" on this website
>
> http://large.stanford.edu/rbl/courses/ph210/
>
> shortly.
>
> Warmest regards,
>
> Jason Pelc
> Stanford University
>