Chapter 8:
Main Toolbar Features
VSP User Manual
67
Version 1.7.92
on the model has a DCP less than the above prediction the vortex is assumed to
have burst and DCP is set to zero for that subpanel
Hence, CK1 and CK2 can be used to adjust the slope and intercept of the
prediction for DCP
Card 10
IAC:
a value of 1 will turn on the auto calculation of aerodynamic center
ACEPS:
the tolerance for convergence on the aerodynamic center. The default value is
0.0001.
Input 2 Tab
Card 3: Mach Numbers
NMACH
: Number of Mach numbers to be analyzed
XMACH:
NMACH number of Mach numbers
Card 4: Alpha Numbers
NALPHA
: Number of angle of attacks to be analyzed
ALPHA
: NALPHA number of angles (degrees)
Card 11: Trim
ITRIM:
a value of 1 will turn on the auto trim. This will find alpha and the control delta
such that CLTRIM and CMTRIM are matched. A value of 2 will turn on the auto trim so
that it will find a control delta such that CMTRIM is matched. The first alpha in the alpha
array is used and C
L
falls out.
NTRIM:
number of trim alphas, C
L
’s and C
m
’s in ALPHA_TRIM, CLTRIM AND
CMTRIM ARRAYS.