xd1 (x2+x3)/3 "Position of disk 1"
xd2 2*(x2+x3)/3 "Position of disk 2"
xd3 (x5+x6)/2 "Position of disk 3"
Dd1 0.3[m] "Diameter of disk 1"
Dd2 0.3[m] "Diameter of disk 2"
Dd3 0.45[m] "Diameter of disk 3"
wd1 0.08[m] "Width of disk 1"
wd2 0.08[m] "Width of disk 2"
wd3 0.1[m] "Width of disk 3"