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1987-06-15
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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
Addendum by: David Foster
1060 Hemlock Drive
Rochester, MI 48063
To include first order approximation of the effect of circulation
induced by incidence.
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
The revision was done on a machine with Starboard extended memory,
and the link step was changed to:-
ln -v +C airfoil.o -lm -lc
to force the program and data to use chip memory, as it was found
that the small control icons did not display otherwise.
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.
Revised program sent to Fred Fish.
================================================================================
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
================================================================================