missile_wez_parameters

Overview

The missile_wez_parameters block provides a way for the user to circumvent the need for a more complex launch computer. If a launch computer is defined on the processor’s owning platform, the missile_wez_parameters commands have no effect.

The missile_wez_parameters block specifies the parameters used in WEZ calculations for the Air Combat WEZ Lines in the Air Combat Visualization Plugin. These parameters are also used when invoking WEZ script methods such as ExpectedWezRangeAgainstTarget and ExpectedWezRangeByTarget

Required subcommands within the missile_wez_parameters block are explained in Required Commands. Any other commands specified by the user are optional and simply override default values. These commands are explained in Optional Commands

missile_wez_parameters … end_missile_wez_parameters

missile_wez_parameters
   // Required Commands
   side ...
   type ...
   // Optional Commands
   avg_speed ...
   max_time_of_flight ...
   max_off_boresight_angle ...
   min_time_of_flight ...
   nominal_pk ...
   head_on_pk_reduction ...
   broadside_pk_reduction ...
end_missile_wez_parameters

Required Commands

side [red ; blue]

Specifies the side for which the WEZ parameters apply. The available options are ‘red’ and ‘blue’.

type [mrm ; srm]

Specifies the missile type for which the WEZ parameters apply. The available options are ‘mrm’ (medium-range missile) and ‘srm’ (short-range missile).

The combination of the side and type commands determines the default WEZ parameters. These can be overwritten with the Optional Commands.

For example:

# A medium-range missile of side blue will have the default WEZ parameters, except for the average speed.
missile_wez_parameters
   side        blue
   type        mrm
   avg_speed   600 m/s
end_missile_wez_parameters

Optional Commands

Any additional parameters that are explicitly set will override the respective parameters from the predefined set.

Missile WEZ parameters

avg_speed <speed-value>

The average missile speed that will be used in the WEZ calculations.

Default: 550 m/s

max_time_of_flight <time-value>

The missile’s maximum time of flight that will be used in the WEZ calculations.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	120 seconds	100 seconds
srm	20 seconds	18 seconds

max_off_boresight_angle <angle-value>

The maximum angle off the nose from the launching aircraft to the target.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	80 degrees	100 degrees
srm	120 degrees	132 degrees

min_time_of_flight <time-value>

The missile’s minimum time of flight that will be used in the WEZ calculations.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	3.5 seconds	4.5 seconds
srm	1.5 seconds	1.5 seconds

Probability-of-Kill Parameters

A combination of nominal_pk, head_on_pk_reduction, and broadside_pk_reduction determines the overall probability of kill. See the equation below:

(1)

where:

• is the overall probability of kill,

• is defined by nominal_pk

• is defined by head_on_pk_reduction

• is defined by broadside_pk_reduction

• is the angle off boresight

nominal_pk <real>

The nominal probability of kill used in equation (1) above.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	0.80	0.75
srm	0.95	0.90

head_on_pk_reduction <real>

A reduction factor that accounts for head-on effects. This number must be between 0.0 and 1.0. See equation (1) above for usage.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	0.0	0.3
srm	0.0	0.3

broadside_pk_reduction <real>

A reduction factor that accounts for broadside effects. This number must be between 0.0 and 1.0. See equation (1) above for usage.

Defaults: dependent on side and type. See the table below. See also Missile WEZ Defaults.

	blue	red
mrm	0.2	0.3
srm	0.2	0.2

Missile WEZ Defaults

The default WEZ parameters for each combination of side and type are shown in tables below. If only side and type are specified, all default values will be used. Any other command that is explicitly specified will override the default value for that particular side/type.

Blue Medium Range Missiles

Parameter Name	Default Value
avg_speed	550 m/s
max_time_of_flight	120 seconds
max_off_boresight_angle	80 degrees
min_time_of_flight	3.5 seconds
nominal_pk	0.80
head_on_pk_reduction	0.0
broadside_pk_reduction	0.2

Blue Short Range Missiles

Parameter Name	Default Value
avg_speed	550 m/s
max_time_of_flight	20 seconds
max_off_boresight_angle	120 degrees
min_time_of_flight	1.5 seconds
nominal_pk	0.95
head_on_pk_reduction	0.0
broadside_pk_reduction	0.2

Red Medium Range Missiles

Parameter Name	Default Value
avg_speed	550 m/s
max_time_of_flight	100 seconds
max_off_boresight_angle	100 degrees
min_time_of_flight	4.5 seconds
nominal_pk	0.75
head_on_pk_reduction	0.3
broadside_pk_reduction	0.3

Red Short Range Missiles

Parameter Name	Default Value
avg_speed	550 m/s
max_time_of_flight	18 seconds
max_off_boresight_angle	132 degrees
min_time_of_flight	1.5 seconds
nominal_pk	0.90
head_on_pk_reduction	0.3
broadside_pk_reduction	0.2