0 net_gen parameter input file
0 Lines beginning with 0 are comment lines
1   2 2			type: [1: cylinder/2: box] 
0			imax: number of line segments in generator lines 
2   0.0   0.0		z_mount: displacement of element mount ring wrt element ref. point.
0			r_mount: radius of mount ring
0			Units: cm for length, kg for mass
0			z_mount and r_mount are not required for box elements 
3   0.0   0.0   3.0     displacement vector(xyz) for element ref. point wrt satellite ref. point
4   1.0   0.0   0.0	alignment matrix for element axes wrt satellite axes (X-collumn)
5   0.0   1.0   0.0	alignment matrix for element axes wrt satellite axes (Y-collumn)
6   0.0   0.0   1.0	alignment matrix for element axes wrt satellite axes (Z-collumn)
0		NOTE: don't put comments on lines 7 and 8 
0			      (the number of elements in these two arrays are not fixed) 
0 			The maximum number of segments on a generator line is 12
7   0.0  77.0
0 			line 7: heights above element ref. plane of start points 
0						of individual segments in generator line
0 			first height always 0.0; only 2 height values for a box element
8  60.0  60.0
0 			line 8: radial distances from element ref axis of start points 
0						of individual segments in generator line
0 			for a box element only specify the two side lengths (x and y)
9  18.8  30.0		mass(kg), z_cg: height of center of gravity above elem. ref. plane
0
99  		NOTE: line 99 signals the end of the parameter list for this element
0
0
1   1 8			type (cylinder), 7 segments in generator line
2  19.0   8.0						z_mount  r_mount
3   4.0   0.0  50.0					displacement vector 
4   1.0   0.0   0.0					X-cosines
5   0.0   1.0   0.0					Y-cosines
6   0.0   0.0   1.0					Z-cosines
7   0.0  11.6  14.6  19.0  19.0  22.5  22.5  28.0	heights
8   4.0   4.0   7.0   7.0   8.5   8.5  12.0  13.0	radii
9   4.0  20.5						mass, height of cg
99
0
1   1 3			type (cylinder), 2 segments in generator line
0
10  4			line 10 Generate a four sided 'cylinder'
0			line 10 is optional. if not used n_face = 15 (cylinder approximation) 
0                       NOTE: the order of the parameter lines is unimportant
2  19.0   8.0						z_mount  r_mount
3   4.0   0.0  27.0					displacement vector 
4   1.0   0.0   0.0					X-cosines
5   0.0   1.0   0.0					Y-cosines
6   0.0   0.0  -1.0					Z-cosines
7   0.0  11.6  28.0					heights
8   4.0  12.0  13.0					radii
9   4.0  20.5						mass, height of cg
99

0
1   1 6			type (cylinder), 2 segments in generator line
0
2   0.0   190.0						z_mount  r_mount
3   0.0   0.0   0.0					displacement vector 
4   1.0   0.0   0.0					X-cosines
5   0.0   1.0   0.0					Y-cosines
6   0.0   0.0   1.0					Z-cosines
7   0.0 500.0 840.0 890 920 950				heights
8   190 190  103 83 50 0 					radii
9   0.0  20.5						mass, height of cg
99

0