                  PROGRAM NAC4GEN Version 2.0D"
             (C) BY Mr. Harold Ginsberg;    Dec 1995"
                  B.S. AEROSPACE ENGINEERING"
     

This program calculates & plots naca 4-digit airfoil section"
It is written in Microsoft Fortran Ver 5.1.

It is based on formulas published in several books. It is
accurate to .01% of the chord compared to published data.
Circulated as shareware you can circulated it, but change it in
any way.

This is version 2.  It CORRECTS a small problem that was causing
a warning about Math Error after program ran for one Airfoil
section.  This error did not affect results.  It also, allows
your to scale greater than 100, so you can uses Centimeter,
Millimeters, or large foils. Also allows you to repeat the
program with out going thought dos.

IF YOU LIKE THIS; PLEASE REGISTRATION IT AND YOU WILL GET A COPY
THAT SAVES THE COORDINATE TO A FILE FOR $10 US 
FILL OUT THE REGISTRATION FORM BELOW and MAIL IT TO:
    
      Mr. Harold Ginsberg
      9727 Hagel Circle
      Lorton, VA 22079
      76660,3274@compuserve.com
You can also registering this software on CompuServe.
 Author:            HAROLD GINSBERG
 CompuServe ID:     [76660,3274]

 Program Title:     NACA4GEN VERSION 2
 Registration ID:   8844
 Fee (US$):         10.00
 This gives you file that save DOS data on airfoil.
 Shipping & Handling Fees (US$): $5.
     
THE AUTHOR HAS A VERSION THAT GENERATES A DXF PLOT DXF CAN BE
IMPORTED INTO MOST CAD & DRAFTING PROGRAMS

NACA.dxf is an example of the DXF file generated by the NAC4DXF
program.  I recommend that you try importing it into your CAD
program before buying it.

Author assume not responsibility for misuse of the DATA from
output from this program.  WARNING: COMPUTER SCREEN MAY DISTORT
THE FOIL SHAPE.

                       NAC4GEN  ORDER FORM (AB028)
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ITEMS
_______________________________________________________________
Quantity         Description            Amount     Sub-Total

                 NAC4GEN Version 1.0D
                 SAVE TO SCREEN ONLY
........         REGISTRATION             $ 2.0      .........
........         Disk Copy& REGISTRATION  $ 5.0      .........


                 NAC4SAV Version 1.0
                 SAVE TO Coordinates to a file
........         REGISTRATION             $ 5.0      .........
........         Disk Copy& REGISTRATION  $10.0      .........

                 NAC4DXF Version 1.0
                 SAVE DXF FILE FOR CAD
........         REGISTRATION             $15.0      .........
........         Disk Copy& REGISTRATION  $20.0      .........

        
                  Shipping .... # of disk * $5.0     .........
                                      
disks   3&1/2 ........        5& 1/4 ........

High Density ........         Low Density ........ 
                                                TOTAL .........

For Site licenses Please call.

To order please mail this form with your payment to:
      Mr. Harold Ginsberg
      9727 Hagel Circle
      Lorton, VA 22079
      76660,3274@compuserve.com
      (703) 541-0766