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281.UPDATE.NOT
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1986-05-12
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49 lines
Corrections required to update version 2.05 to 2.06
These may be ignored if your version is 2.06 or greater.
To correct the program I made the following changes to
Function Flight_Speed within the file, WING.PAS :
#1) Calculation of Parasite_Drag_Coef changed to read :
Parasite_Drag_Coef :=
Tail_Drag_Coef + ( 0.004 * ( Sqr ( Lift_Coef )));
#2) Remove the term Tail_Drag_Coef from the calculation of Total_Drag_Coef.
The line now reads :
Total_Drag_Coef :=
Profile_Drag_Coef + Induced_Drag_Coef + Parasite_Drag_Coef;
#3) Remove the term 0.0085 from calculation of Tail_Drag_Coef and change
the line to read as follows :
Tail_Drag_Coef := (( 3.75615 / Sqrt ( Reynolds )) / Wing_Area );
& To Procedure Reset_Defaults if the same file, WING.PAS :
#4) Tail_Drag_Coef := 0.005;
(* Initial value of Tail_Drag_Coef changes after first run of Functions *)
The above value was := 0.01;.
Also there are changes in the notes at the above places that read :
(* Note changes made upon the advice of Herk Stokely to correct CD *)
and corrections to the descriptions of the formulae.
& lastly To the Procedure Display_Extras in the file, WINGIT.INC :
#5) at about 75 lines down from the top of the Procedure, remove both of
the " * 2 " terms from the display of the value of Stab_Area. I can't
remember why I did this but I do remember that at the time it seemed like
a good idea.
and lastly to the both files. WING.PAS and WINGIT.INC :
#6) do a global find and replace of the version number from 2.05 to 2.06
and of the date , March to May.
That fixes that !! An edited version of this file will tag along with any
new issues of the program and serve as documentation notes of the above
changes.