How are the fab-500 fm parameters used in trajectory calculation?

For FAB-500, i found below two groups of parameters, one in bombs_data.lua:

    {
       name    = FAB_500,
       type    = 0,
       mass    = 500.0,
       hMin    = 300.0,
       hMax    = 20000.0,
       Cx      = 0.00133,
       VyHold  = -100.0,
       Ag      = -1.23,
       warhead = warheads["FAB_500"],
   },

The other in bombs_table.lua:

    fm =
   {
           mass            = 500.000000,
           caliber         = 0.400000,
           cx_coeff        = {1.000000, 0.390000, 0.600000, 0.168000, 1.310000},
           L               = 2.430000,
           I               = 246.037500,
           Ma              = 0.324570,
           Mw              = 3.139597,

           wind_sigma      = 100.000000,
   },

.

And now i'm learning how those parameters are used in bomb drop trajectory. Anyone can share the formula with above parameters (e.g cx_coef table)? Another question is, either in game or in reality, does release iron bomb (e.g. fab-500) have same trajectory as jettison (same status, pitch, speed etc)?

Thanks