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	Airfoil generator utilizing the Joukowski transformation

	Written by:  Russell Leighton
		     762 1/2 W. Newgrove
	             Lancaster, CA  93534
	             22 March 1987

	Any comments?  Just leave me a message on the Lighthouse BBS,
	(805) 272-1812 (my user name is under Russ Leighton) or write to
	me at the address above.

	This program was mostly an exercise in C programming using the 
	intuition and graphics routines found in the ROM kernal.  It 
	should, at least, serve as a fairly good example of how to use 
	these routines especially in combination (not as straight forward 
	as the manuals imply).

	The program was compiled using the MANX Aztec C compiler version
	3.40a.  The following lines show the command sequence I used.

		cc airfoil.c
		ln -v airfoil.o -lm -lc

	This program is free to do with as you please as long as you give
	me a little credit if you use the transformation algorithms.  Also,
	if you make any improvements or additions please let me know about
	them.  Please include this documentation with the program if you
	choose to give it to anyone else.

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	This program generates airfoils as well as their corresponding
	streamline and pressure distributions.  The equations used are
	described in airfoil.doc.  To use this program first run it 
	(either by selecting its' icon or typing "run airfoil" at the CLI 
	prompt) then bring up the requester by double clicking the right 
	mouse button (the menu button).  This requester can be brought up 
	at any time (even during plotting) by double clicking the right 
	mouse button.  The requester gadgets are located and described as 
	follows.

	Gadget     Location                Description
	------     --------                -----------

	Quit       Upper left corner       Exits from program
	Close      Upper right corner      Starts or continues plot
	ShowTitle  Upper center            Toggles screen title bar
	Airfoil    Below ShowTitle gadget  Toggles streamline/pressure plot
	Camber     Below Airfoil gadget    Mid-chord camber entry
	Thickness  Below Camber gadget     Mid-chord thickness entry
	Angle      Below Thickness gadget  Angle of attack entry
	Velocity   Bottom edge             Slider for velocity entry

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