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lab1/weapons/ssm/red_icbm_2.txt
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2025-09-12 15:20:28 +08:00

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# ****************************************************************************
# CUI
#
# The Advanced Framework for Simulation, Integration, and Modeling (AFSIM)
#
# The use, dissemination or disclosure of data in this file is subject to
# limitation or restriction. See accompanying README and LICENSE for details.
# ****************************************************************************
###############################################################################
# ------ UNCLASSIFIED ------
# RED_ICBM_2
###############################################################################
#
# NOTE: If you modify any parameter in this file, you must rerun 'weapon_tools'
# with 'red_icbm_2_lcg.txt' as input to regenerate the launch computer data.
#
###############################################################################
#
# ***** WARNING ***** WARNING ***** WARNING ***** WARNING ***** WARNING *****
#
# This definition is intended to be EXPORTABLE. It is defined using publicly
# available, attributable sources. DO NOT ADD ANYTHING BASED ON OTHER SOURCES!
#
# ***** WARNING ***** WARNING ***** WARNING ***** WARNING ***** WARNING *****
#
###############################################################################
#
# This model is built using data from unclassified sources as follows:
#
# 1) http://www.globalsecurity.org/wmd/world/dprk/td-2-specs.htm
# http://www.globalsecurity.org/wmd/world/dprk/td-2.htm
#
###############################################################################
###############################################################################
# Support for explicit representation of spent stages
#
# Platforms will be created for spent stages if one the global script variables
# is defined as follows:
#
# script_variables
# SHOW_SPENT_STAGES["ALL"] = true; # For any weapon
# SHOW_SPENT_STAGES["RED_ICBM_2"] = true; # For just this weapon type
# end_script_variables
###############################################################################
include_once show_spent_stages.txt
##### Stage 1
aero RED_ICBM_2_SPENT_STAGE_1_AERO WSF_AERO # TODO
reference_area 16.62 ft^2
aspect_ratio 1.0
cl_max 5.0
zero_lift_cd 0.7
end_aero
infrared_signature RED_ICBM_2_SPENT_STAGE_1_INFRARED_SIG
constant 1 watts/steradian
end_infrared_signature
optical_signature RED_ICBM_2_SPENT_STAGE_1_OPTICAL_SIG
constant 1 m^2
end_optical_signature
radar_signature RED_ICBM_2_SPENT_STAGE_1_RADAR_SIG
constant 1 m^2
end_radar_signature
platform_type RED_ICBM_2_SPENT_STAGE_1 WSF_PLATFORM
icon Scud_Missile
infrared_signature RED_ICBM_2_SPENT_STAGE_1_INFRARED_SIG
optical_signature RED_ICBM_2_SPENT_STAGE_1_OPTICAL_SIG
radar_signature RED_ICBM_2_SPENT_STAGE_1_RADAR_SIG
mover WSF_GUIDED_MOVER
integration_timestep 0.01 secs
stage 1
aero RED_ICBM_2_SPENT_STAGE_1_AERO
total_mass 3552.0 kg
end_stage
end_mover
processor fuse WSF_GROUND_TARGET_FUSE
end_processor
end_platform_type
##### Stage 2
aero RED_ICBM_2_SPENT_STAGE_2_AERO WSF_AERO # TODO
reference_area 16.62 ft^2
aspect_ratio 1.0
cl_max 5.0
zero_lift_cd 0.7
end_aero
infrared_signature RED_ICBM_2_SPENT_STAGE_2_INFRARED_SIG
constant 1 watts/steradian
end_infrared_signature
optical_signature RED_ICBM_2_SPENT_STAGE_2_OPTICAL_SIG
constant 1 m^2
end_optical_signature
radar_signature RED_ICBM_2_SPENT_STAGE_2_RADAR_SIG
constant 1 m^2
end_radar_signature
platform_type RED_ICBM_2_SPENT_STAGE_2 WSF_PLATFORM
icon Scud_Missile
infrared_signature RED_ICBM_2_SPENT_STAGE_2_INFRARED_SIG
optical_signature RED_ICBM_2_SPENT_STAGE_2_OPTICAL_SIG
radar_signature RED_ICBM_2_SPENT_STAGE_2_RADAR_SIG
mover WSF_GUIDED_MOVER
integration_timestep 0.01 secs
stage 1
aero RED_ICBM_2_SPENT_STAGE_2_AERO
total_mass 2346.0 kg
end_stage
end_mover
processor fuse WSF_GROUND_TARGET_FUSE
end_processor
end_platform_type
##### Stage 3
aero RED_ICBM_2_SPENT_STAGE_3_AERO WSF_AERO # TODO
reference_area 16.62 ft^2
aspect_ratio 1.0
cl_max 5.0
zero_lift_cd 0.7
end_aero
infrared_signature RED_ICBM_2_SPENT_STAGE_3_INFRARED_SIG
constant 1 watts/steradian
end_infrared_signature
optical_signature RED_ICBM_2_SPENT_STAGE_3_OPTICAL_SIG
constant 1 m^2
end_optical_signature
radar_signature RED_ICBM_2_SPENT_STAGE_3_RADAR_SIG
constant 1 m^2
end_radar_signature
platform_type RED_ICBM_2_SPENT_STAGE_3 WSF_PLATFORM
icon Scud_Missile
infrared_signature RED_ICBM_2_SPENT_STAGE_3_INFRARED_SIG
optical_signature RED_ICBM_2_SPENT_STAGE_3_OPTICAL_SIG
radar_signature RED_ICBM_2_SPENT_STAGE_3_RADAR_SIG
mover WSF_GUIDED_MOVER
integration_timestep 0.01 secs
stage 1
aero RED_ICBM_2_SPENT_STAGE_3_AERO
total_mass 833.0 kg
end_stage
end_mover
processor fuse WSF_GROUND_TARGET_FUSE
end_processor
end_platform_type
###############################################################################
# Signature data is unknown...
infrared_signature RED_ICBM_2_INFRARED_SIG
constant 1 watts/steradian
end_infrared_signature
optical_signature RED_ICBM_2_OPTICAL_SIG
constant 1 m^2
end_optical_signature
radar_signature RED_ICBM_2_RADAR_SIG
constant 1 m^2
end_radar_signature
# Nominal lethality data.
weapon_effects RED_ICBM_2_EFFECT WSF_GRADUATED_LETHALITY
radius_and_pk 1000.0 m 1.0
end_weapon_effects
###############################################################################
aero RED_ICBM_2_STAGE_1_AERO WSF_AERO
reference_area 3.8013 m^2 # 2.2 m diameter (Ref 1)
aspect_ratio 2.0
cl_max 4.5
zero_lift_cd 0.2
zero_lift_cd 0.4
end_aero
aero RED_ICBM_2_STAGE_2_AERO WSF_AERO
reference_area 1.767 m^2 # 1.5 m diameter (Ref 1)
aspect_ratio 2.0
cl_max 4.5
zero_lift_cd 0.2
zero_lift_cd 0.4
end_aero
aero RED_ICBM_2_STAGE_3_AERO WSF_AERO
reference_area 3.079 m^2 # 1.98 m diameter (Ref 1)
aspect_ratio 2.0
cl_max 4.5
zero_lift_cd 0.2
zero_lift_cd 0.4
end_aero
aero RED_ICBM_2_RV_AERO WSF_AERO
reference_area 3.079 m^2 # 1.98 m diameter (Ref 1)
aspect_ratio 2.0
cl_max 4.5
zero_lift_cd 0.18
end_aero
###############################################################################
mover RED_ICBM_2_MOVER WSF_GUIDED_MOVER
integration_timestep 0.005 secs
update_interval 0.05 secs
# NOTE: There are many slight inconsistencies in the values in Ref 1.
# The thrust_duration and thrust in Ref 1 are assumed to be consistent.
# The specific_impulse and burn_rate are allowed to be internally
# computed so as to use all the fuel.
stage 1
aero RED_ICBM_2_STAGE_1_AERO
total_mass 55898 kg # Ref 1, Mi
fuel_mass 52124 kg # Ref 1, Mp
# fuel_mass 114672.0 lbs # Brian's value
# Dry 3340 + 212 inter-stage = 3552
# Note: Using The Isp eff. SL of 226 caused more fuel to be used than available.
#specific_impulse 230 sec # Ref 1, Isp actual SL
thrust_duration 112 sec # Ref 1
thrust 107040 kgf # Ref 1
end_stage
stage 2
aero RED_ICBM_2_STAGE_2_AERO
total_mass 19106.5 kg # Ref 1, Mi, lower value
fuel_mass 16760.5 kg # Ref 1, Mp
# fuel_mass 36872.0 lbs # Brian's value
# Dry 2146.75 + 200 inter-stage = 2346.75
#specific_impulse 296 sec # Ref 1 vacuum
#burn_rate 93.1138 kg/s # fuel_mass / thrust_duration
thrust_duration 180 sec # Ref 1
thrust 29600 kgf # Ref 1
end_stage
stage 3
aero RED_ICBM_2_STAGE_3_AERO
total_mass 2422 kg # Ref 1, Mi
fuel_mass 1804 kg # Ref 1, Mp (1589-1804 given)
# fuel_mass 3968.0 lbs # Brian's value
#empty_mass 833 kg # Ref 1, Mf
#Dry 246, Adapter 37, Shroud 250
#specific_impulse 289 sec # Ref 1
#burn_rate 72.16 kg/s # fuel_mass / thrust_duration
# The thrust duration was quoted as either 25 or 28. 25 was chosen because it
# results in the 317 sec total burn time that was quoted.
thrust_duration 25 sec # Ref 1 (25, 28 given)
thrust 18354.89 kgf # Ref 1
end_stage
stage 4
aero RED_ICBM_2_RV_AERO
# total_mass 300 kg # Ref 1
total_mass 2200 lbs # Brian's value
end_stage
end_mover
###############################################################################
processor RED_ICBM_2_GUIDANCE WSF_GUIDANCE_COMPUTER
# Go vertical for a short time.
phase LIFTOFF
guidance_delay 100.0 sec
# NOTE: Do not use altitude for the criteria for starting pitch over as
# trajectory is VERY sensitive to the TIME when pitch over starts. If it
# were to be used, a minor changes in the launcher altitude would cause
# pitch over to start at a different time!
next_phase PITCH_OVER when phase_time >= 2.0 sec # About 100 ft
end_phase
# Pitch over to the desired flight path angle from the launch computer.
phase PITCH_OVER
commanded_flight_path_angle from_launch_computer
proportional_navigation_gain 0.0 # Don't guide to target
velocity_pursuit_gain 0.0 # Don't guide to target
maximum_commanded_g 1.0 g
next_phase BALLISTIC when on_commanded_flight_path_angle
end_phase
# Continue flight without guidance (gravity turn).
phase BALLISTIC
# Turn the guidance processor off once pure ballistic mode is started.
# This shaves several percent off the processor time.
on_entry
TurnOff();
end_on_entry
guidance_delay 9000.0 sec
end_phase
end_processor
###############################################################################
platform_type RED_ICBM_2 WSF_PLATFORM
icon Scud_Missile
infrared_signature RED_ICBM_2_INFRARED_SIG
optical_signature RED_ICBM_2_OPTICAL_SIG
radar_signature RED_ICBM_2_RADAR_SIG
weapon_effects RED_ICBM_2_EFFECT
mover RED_ICBM_2_MOVER
#show_status
end_mover
processor guidance RED_ICBM_2_GUIDANCE
#show_status
#show_graphics
end_processor
processor fuse WSF_GROUND_TARGET_FUSE
# If the target is killed by another weapon we want to still keep going.
coast_time_on_loss_of_target 10000.0 secs
end_processor
weapon stage_1 WSF_EXPLICIT_WEAPON
launched_platform_type RED_ICBM_2_SPENT_STAGE_1
launch_delta_v -100.0 0.0 0.0 m/s
quantity 1
end_weapon
weapon stage_2 WSF_EXPLICIT_WEAPON
launched_platform_type RED_ICBM_2_SPENT_STAGE_2
launch_delta_v -100.0 0.0 0.0 m/s
quantity 1
end_weapon
weapon stage_3 WSF_EXPLICIT_WEAPON
launched_platform_type RED_ICBM_2_SPENT_STAGE_3
launch_delta_v -100.0 0.0 0.0 m/s
quantity 1
end_weapon
script void on_stage_separation(int aStage)
extern Map<string, bool> SHOW_SPENT_STAGES;
if (SHOW_SPENT_STAGES["ALL"] ||
SHOW_SPENT_STAGES["RED_ICBM_2"])
{
if (aStage == 1) Weapon("stage_1").Fire(WsfTrack());
if (aStage == 2) Weapon("stage_2").Fire(WsfTrack());
if (aStage == 3) Weapon("stage_3").Fire(WsfTrack());
}
end_script
end_platform_type
###############################################################################
launch_computer RED_ICBM_2_LAUNCH_COMPUTER WSF_BALLISTIC_MISSILE_LAUNCH_COMPUTER
surface_to_surface_table weapons/ssm/red_icbm_2_launch_data.txt
end_launch_computer
###############################################################################
# Provide the aero and mass data to WSF_BALLISTIC_MISSILE_LAUNCH_COMPUTER. This
# is 'truth data' used by the launch computer for 'trajectory estimation'.
ballistic_missile_launch_computer
target_data RED_ICBM_2
aero RED_ICBM_2_RV_AERO # Aero type of final stage
mass 2200 lbs # Mass of final stage
end_target_data
end_ballistic_missile_launch_computer
###############################################################################
weapon RED_ICBM_2 WSF_EXPLICIT_WEAPON
# The location offset puts the weapon center at half the length - 1 m.
# This assumes the scenario creator puts the launching platform at 1 m agl.
location 0.0 0.0 -15.915 m # Ref 1, length = 33.83 m
launched_platform_type RED_ICBM_2
launch_computer RED_ICBM_2_LAUNCH_COMPUTER
end_launch_computer
# The missiles are launched vertically.
# We can't specify 90 degrees because of a singularity
tilt 89.9 degrees
# This causes a call to the launch computer to compute the predicted intercept.
# The launcher will then be cued to the proper angles (Subject to the slewing
# limits defined below). This is a bit of a hack until the guidance computer
# is changed...
cue_to_predicted_intercept true
slew_mode azimuth
azimuth_slew_limits -180 deg 180 deg
# Default to a single weapon on the vehicle
quantity 1
# Abort the launch if the launch computer didn't provide the required data
require_loft_angle
end_weapon
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