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DATCOM
what's wrong with it
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Do you have a problem with the original DATCOM program? Do you have some interesting information you would like to share? Post it here.
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TOPIC: what's wrong with it
#393
BillGalbraith
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Re:what's wrong with it 9 Months, 2 Weeks ago Karma: 0
That's probably keeping it from running. You should probably see that message in the FOR006.out file.

0ERROR ** FLAP INBOARD SPAN, SPANI = .10000E+00, IT IS INSIDE THE BODY AS DEFINED BY SSPN AND SSPNE
SPANI IS REDEFINED, SPANI = SSPN-SSPNE = .92500E+00


I might suggest taht you look into the Datcom+ Pro version available at www.holycows.net/datcom. With it, I could tell your problems immediately, and it did give me a 3d picture of your aircraft. The inboard and outboard chords of the horizintal stabilzer must be switched as well.

Send me an email at This e-mail address is being protected from spambots. You need JavaScript enabled to view it if you need more help. I respond quicker than this board does.
 
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#392
GABAIR
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what's wrong with it 9 Months, 2 Weeks ago Karma: 0
Hello
could anyone tell me what's wrong with this DATCOM code ?

$FLTCON NMACH=4.0,MACH(1)=0.1,0.2,0.3,0.35$
$FLTCON NALT=8.0,ALT(1)=1000.0,3000.0,5000.0,7000.0,9000.0,
11000.0,13000.0,15000.0$
$FLTCON NALPHA=10.,ALSCHD(1)=-16.0,-12.0,-8.0,-4.0,-2.0,0.0,2.0,
ALSCHD(8)=4.0,8.0,12.0,LOOP=2.0$
$OPTINS SREF=225.8,CBARR=5.75,BLREF=41.15$
$SYNTHS XCG=7.9,ZCG=-1.4,XW=6.1,ZW=0.0,ALIW=1.1,XH=20.2,
ZH=0.4,ALIH=0.0,XV=21.3,ZV=0.0,VERTUP=.TRUE.$
$BODY NX=10.0,
X(1)=-4.9,0.0,3.0,6.1,9.1,13.3,20.2,23.5,25.9,
R(1)=0.0,1.0,1.75,2.6,2.6,2.6,2.0,1.0,0.0$
$WGPLNF CHRDTP=4.0,SSPNE=18.7,SSPN=20.6,CHRDR=7.2,SAVSI=0.0,CHSTAT=0.25,
TWISTA=-1.1,SSPNDD=0.0,DHDADI=3.0,DHDADO=3.0,TYPE=1.0$
$HTPLNF CHRDTP=2.3,SSPNE=5.7,SSPN=6.625,CHRDR=0.25,SAVSI=11.0,
CHSTAT=1.0,TWISTA=0.0,TYPE=1.0$
$VTPLNF CHRDTP=2.7,SSPNE=5.0,SSPN=5.2,CHRDR=5.3,SAVSI=31.3,
CHSTAT=0.25,TWISTA=0.0,TYPE=1.0$
$SYMFLP NDELTA=5.0,DELTA(1)=-20.,-10.,0.,10.,20.,PHETE=.0522,
CHRDFI=1.3,
CHRDFO=1.3,SPANFI=.1,SPANFO=6.0,FTYPE=1.0,CB=1.3,TC=.0225,
PHETEP=.0391,NTYPE=1.$
NACA-W-4-0012
NACA-H-4-0012
NACA-V-4-0012
CASEID SKYHOGG BODY-WING-HORIZONTAL TAIL-VERTICAL TAIL CONFIG
DAMP
NEXT CASE

It's supposed to be a light aircraft.
And I just can't get an output file, and have a 3D view of it ... Don't know why !
If anybody can try this out and tell what should I do to fix this problem I would be very grateful to you !
 
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#394
BillGalbraith
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Re:what's wrong with it 9 Months, 2 Weeks ago Karma: 0
Also, on line 5, where it says "ALSCHD(8)=", remove that.
It works in Fortran, and is supposed to work in these
input files, but doesn't.
 
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