init
This commit is contained in:
424
weapons/ssm/red_srbm_4.txt
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424
weapons/ssm/red_srbm_4.txt
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# ****************************************************************************
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# CUI
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#
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# The Advanced Framework for Simulation, Integration, and Modeling (AFSIM)
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#
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# The use, dissemination or disclosure of data in this file is subject to
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# limitation or restriction. See accompanying README and LICENSE for details.
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# ****************************************************************************
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###############################################################################
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# ------ UNCLASSIFIED ------
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#
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# This is a postulated red short range ballistic missile (red_srbm_4), which is
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# based on the two-stage, solid-propellant red short range ballistic missile
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# (red_srbm_3) with a third stage derived from the second stage by making
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# it shorter and carrying a correspondingly reduced amount of propellant.
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#
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###############################################################################
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#
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# NOTE: If you modify any parameter in this file, you must rerun 'weapon_tools'
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# with 'red_srbm_4_lcg.txt' as input to regenerate the launch computer data.
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#
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###############################################################################
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#
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# ***** WARNING ***** WARNING ***** WARNING ***** WARNING ***** WARNING *****
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#
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# This definition is intended to be EXPORTABLE. It is defined using publicly
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# available, attributable sources. DO NOT ADD ANYTHING BASED ON OTHER SOURCES!
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#
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# ***** WARNING ***** WARNING ***** WARNING ***** WARNING ***** WARNING *****
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#
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###############################################################################
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#
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# This model is built using data from unclassified sources as follows:
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#
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# 1) "Technical Addendum to the Joint Threat Assessment on the Iran's Nuclear
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# and Missile Potential -- The Sejil Ballistic Missile", Theodore Postol, 2009
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#
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# 2) "Professional Development Short Course on Tactical Missile Design"
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# Eugene Fleeman, http://genefleeman.home.mindspring.com
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#
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###############################################################################
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###############################################################################
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# Support for explicit representation of spent stages
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#
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# Platforms will be created for spent stages if one the global script variables
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# is defined as follows:
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#
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# script_variables
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# SHOW_SPENT_STAGES["ALL"] = true; # For any weapon
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# SHOW_SPENT_STAGES["RED_SRBM_4"] = true; # For just this weapon type
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# end_script_variables
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###############################################################################
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include_once show_spent_stages.txt
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include_once typical_ballistic_missile_aero.txt
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# -----------------------------------------------------------------------------
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##### Spent Stage 1
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aero RED_SRBM_4_SPENT_STAGE_1_AERO TYPICAL_SPENT_STAGE_AERO
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reference_area 13.203 ft^2 # Ref 1 - 1.25 m diam (4.1 ft)
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end_aero
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infrared_signature RED_SRBM_4_SPENT_STAGE_1_INFRARED_SIG
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constant 1 watts/steradian # Generic signature, not intended to be representative
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end_infrared_signature
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optical_signature RED_SRBM_4_SPENT_STAGE_1_OPTICAL_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_optical_signature
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radar_signature RED_SRBM_4_SPENT_STAGE_1_RADAR_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_radar_signature
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platform_type RED_SRBM_4_SPENT_STAGE_1 WSF_PLATFORM
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icon Scud_Missile
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infrared_signature RED_SRBM_4_SPENT_STAGE_1_INFRARED_SIG
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optical_signature RED_SRBM_4_SPENT_STAGE_1_OPTICAL_SIG
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radar_signature RED_SRBM_4_SPENT_STAGE_1_RADAR_SIG
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mover WSF_GUIDED_MOVER
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integration_timestep 0.01 secs
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stage 1
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aero RED_SRBM_4_SPENT_STAGE_1_AERO
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total_mass 4862 lbs # Ref 1 - 2210 kg (4862 lbs)
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end_stage
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end_mover
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processor fuse WSF_GROUND_TARGET_FUSE
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end_processor
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end_platform_type
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# -----------------------------------------------------------------------------
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##### Spent Stage 2
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aero RED_SRBM_4_SPENT_STAGE_2_AERO TYPICAL_SPENT_STAGE_AERO
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reference_area 13.203 ft^2 # Ref 1 - 1.25 m diam (4.1 ft)
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end_aero
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infrared_signature RED_SRBM_4_SPENT_STAGE_2_INFRARED_SIG
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constant 1 watts/steradian # Generic signature, not intended to be representative
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end_infrared_signature
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optical_signature RED_SRBM_4_SPENT_STAGE_2_OPTICAL_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_optical_signature
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radar_signature RED_SRBM_4_SPENT_STAGE_2_RADAR_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_radar_signature
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platform_type RED_SRBM_4_SPENT_STAGE_2 WSF_PLATFORM
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icon Scud_Missile
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infrared_signature RED_SRBM_4_SPENT_STAGE_2_INFRARED_SIG
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optical_signature RED_SRBM_4_SPENT_STAGE_2_OPTICAL_SIG
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radar_signature RED_SRBM_4_SPENT_STAGE_2_RADAR_SIG
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mover WSF_GUIDED_MOVER
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integration_timestep 0.01 secs
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stage 1
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aero RED_SRBM_4_SPENT_STAGE_2_AERO
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total_mass 1914 lbs # Ref 1 - 870 kg (1914 lbs)
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end_stage
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end_mover
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processor fuse WSF_GROUND_TARGET_FUSE
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end_processor
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end_platform_type
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# -----------------------------------------------------------------------------
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##### Spent Stage 3
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aero RED_SRBM_4_SPENT_STAGE_3_AERO TYPICAL_SPENT_STAGE_AERO
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reference_area 13.203 ft^2 # Ref 1 - 1.25 m diam (4.1 ft)
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end_aero
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infrared_signature RED_SRBM_4_SPENT_STAGE_3_INFRARED_SIG
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constant 1 watts/steradian # Generic signature, not intended to be representative
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end_infrared_signature
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optical_signature RED_SRBM_4_SPENT_STAGE_3_OPTICAL_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_optical_signature
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radar_signature RED_SRBM_4_SPENT_STAGE_3_RADAR_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_radar_signature
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platform_type RED_SRBM_4_SPENT_STAGE_3 WSF_PLATFORM
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icon Scud_Missile
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infrared_signature RED_SRBM_4_SPENT_STAGE_3_INFRARED_SIG
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optical_signature RED_SRBM_4_SPENT_STAGE_3_OPTICAL_SIG
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radar_signature RED_SRBM_4_SPENT_STAGE_3_RADAR_SIG
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mover WSF_GUIDED_MOVER
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integration_timestep 0.01 secs
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stage 1
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aero RED_SRBM_4_SPENT_STAGE_3_AERO
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total_mass 957 lbs # Assumed 50% of stage 2
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end_stage
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end_mover
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processor fuse WSF_GROUND_TARGET_FUSE
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end_processor
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end_platform_type
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# -----------------------------------------------------------------------------
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##### Main object observatbles
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infrared_signature RED_SRBM_4_INFRARED_SIG
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state default
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band default
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constant 654321 w/sr # Large signature when boosting
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state boost_complete
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band default
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constant 1 w/sr # Generic signature after burnout
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end_infrared_signature
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optical_signature RED_SRBM_4_OPTICAL_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_optical_signature
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radar_signature RED_SRBM_4_RADAR_SIG
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constant 1 m^2 # Generic signature, not intended to be representative
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end_radar_signature
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# -----------------------------------------------------------------------------
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#### Nominal lethality data.
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weapon_effects RED_SRBM_4_EFFECT WSF_GRADUATED_LETHALITY
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radius_and_pk 1000.0 m 1.0 # Kills target if impacting within 1000 m
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end_weapon_effects
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# -----------------------------------------------------------------------------
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#### Aero during various flight phases
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aero RED_SRBM_4_STAGE_1_AERO TYPICAL_MISSILE_AERO
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reference_area 13.203 ft^2 # Ref 1 - 1.25 m diam (4.1 ft)
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end_aero
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aero RED_SRBM_4_STAGE_2_AERO TYPICAL_MISSILE_AERO
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reference_area 13.203 ft^2 # Ref 1 - 1.25 m diam (4.1 ft)
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end_aero
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aero RED_SRBM_4_STAGE_3_AERO TYPICAL_MISSILE_AERO
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reference_area 13.203 ft^2 # Assumed shortened stage 2
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end_aero
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aero RED_SRBM_4_RV_AERO TYPICAL_RV_AERO
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reference_area 6.469 ft^2 # Ref 1 - Diam is 70% of other stages - diam 2.87 ft
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end_aero
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###############################################################################
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#### Mover definition
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mover RED_SRBM_4_MOVER WSF_GUIDED_MOVER
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integration_timestep 0.005 secs
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update_interval 0.05 secs
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stage 1
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aero RED_SRBM_4_STAGE_1_AERO
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total_mass 32384 lbs # Ref 1, 14720 kg (32384 lbs)
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fuel_mass 27522 lbs # Ref 1, Empty wgt 2210 kg (4862)
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specific_impulse 235 sec # Ref 1, Average of 220-250
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# thrust_duration 50 sec # Ref 1
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thrust 122320 lbf # Ref 1, 55600 kgf (122320 lbf)
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end_stage
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stage 2
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aero RED_SRBM_4_STAGE_2_AERO
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total_mass 12716 lbs # Ref 1, 5780 kg (12716 lbs)
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fuel_mass 10802 lbs # Ref 1, Empty wgt 870 kg (1914 lbs)
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specific_impulse 250 sec # Ref 1
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# thrust_duration 50 sec # Ref 1
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thrust 47960 lbf # Ref 1, 21800 kgf (47960 lbf)
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end_stage
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stage 3
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aero RED_SRBM_4_STAGE_3_AERO
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total_mass 6358 lbs # Assumed 50% of stage 2
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fuel_mass 5401 lbs # Assumed 50% of stage 2
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specific_impulse 250 sec # Same as stage 2
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# thrust_duration 56 sec # Calculated
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thrust 23980 lbf # Assumed 50% of stage 2
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end_stage
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stage 4
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aero RED_SRBM_4_RV_AERO
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total_mass 1100 lbs # Assumed using a 500 kg warhead
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end_stage
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end_mover
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###############################################################################
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processor RED_SRBM_4_GUIDANCE WSF_GUIDANCE_COMPUTER
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# Go vertical for a short time.
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phase LIFTOFF
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guidance_delay 100.0 sec
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# NOTE: Do not use altitude for the criteria for starting pitch over as
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# trajectory is VERY sensitive to the TIME when pitch over starts. If it
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# were to be used, a minor changes in the launcher altitude would cause
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# pitch over to start at a different time!
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next_phase PITCH_OVER when phase_time >= 2.0 sec # About 100 ft
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end_phase
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# Pitch over to the desired flight path angle from the launch computer.
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phase PITCH_OVER
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commanded_flight_path_angle from_launch_computer
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proportional_navigation_gain 0.0 # Don't guide to target
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velocity_pursuit_gain 0.0 # Don't guide to target
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# maximum_commanded_g 1.0 g
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maximum_commanded_g 0.5 g
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next_phase BALLISTIC when on_commanded_flight_path_angle
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end_phase
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# Continue flight with zero alpha, a gravity turn.
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phase BALLISTIC
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# Turn the guidance processor off once pure ballistic mode is started.
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# This shaves several percent off the processor time.
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on_entry
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TurnOff();
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end_on_entry
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guidance_delay 9000.0 sec
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end_phase
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end_processor
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###############################################################################
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platform_type RED_SRBM_4 WSF_PLATFORM
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icon Scud_Missile
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infrared_signature RED_SRBM_4_INFRARED_SIG
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optical_signature RED_SRBM_4_OPTICAL_SIG
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radar_signature RED_SRBM_4_RADAR_SIG
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weapon_effects RED_SRBM_4_EFFECT
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mover RED_SRBM_4_MOVER
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#show_status
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end_mover
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processor guidance RED_SRBM_4_GUIDANCE
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#show_status
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#show_graphics
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end_processor
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processor fuse WSF_GROUND_TARGET_FUSE
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# If the target is killed by another weapon we want to still keep going.
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coast_time_on_loss_of_target 10000.0 secs
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end_processor
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weapon stage_1 WSF_EXPLICIT_WEAPON
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launched_platform_type RED_SRBM_4_SPENT_STAGE_1
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launch_delta_v -3.0 0.0 0.0 ft/s # Provide a slight nudge
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quantity 1
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end_weapon
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weapon stage_2 WSF_EXPLICIT_WEAPON
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launched_platform_type RED_SRBM_4_SPENT_STAGE_2
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launch_delta_v -3.0 0.0 0.0 ft/s # Provide a slight nudge
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quantity 1
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end_weapon
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weapon stage_3 WSF_EXPLICIT_WEAPON
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launched_platform_type RED_SRBM_4_SPENT_STAGE_3
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launch_delta_v -3.0 0.0 0.0 ft/s # Provide a slight nudge
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quantity 1
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end_weapon
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script void on_stage_separation(int aStage)
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extern Map<string, bool> SHOW_SPENT_STAGES;
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if (SHOW_SPENT_STAGES["ALL"] ||
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SHOW_SPENT_STAGES["RED_SRBM_4"])
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{
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if (aStage == 1) Weapon("stage_1").Fire(WsfTrack());
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if (aStage == 2) Weapon("stage_2").Fire(WsfTrack());
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if (aStage == 3) Weapon("stage_3").Fire(WsfTrack());
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}
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end_script
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script void on_stage_burnout(int stage)
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if (stage == 3)
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{
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PLATFORM.SetAuxData("BOOST_COMPLETE", true);
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PLATFORM.SetInfraredSigState("boost_complete");
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}
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end_script
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end_platform_type
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###############################################################################
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launch_computer RED_SRBM_4_LAUNCH_COMPUTER WSF_BALLISTIC_MISSILE_LAUNCH_COMPUTER
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surface_to_surface_table red_srbm_4_launch_data.txt
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end_launch_computer
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###############################################################################
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# Provide the aero and mass data to WSF_BALLISTIC_MISSILE_LAUNCH_COMPUTER. This
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# is 'truth data' used by the launch computer for 'trajectory estimation'.
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ballistic_missile_launch_computer
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target_data RED_SRBM_4
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aero RED_SRBM_4_RV_AERO # Aero type of final stage
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mass 1100 lbs # Mass of final stage
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end_target_data
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end_ballistic_missile_launch_computer
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###############################################################################
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weapon RED_SRBM_4 WSF_EXPLICIT_WEAPON
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# The location offset puts the weapon center at half the length - 1 m.
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# This assumes the scenario creator puts the launching platform at 1 m agl.
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location 0.0 0.0 -9.955 m # Ref 1, length = 18.21 m + 3.7 m (21.91m)
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launched_platform_type RED_SRBM_4
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launch_computer RED_SRBM_4_LAUNCH_COMPUTER
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#debug
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#show_results
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end_launch_computer
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# The missiles are launched vertically.
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# We can't specify 90 degrees because of a singularity
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tilt 89.9 degrees
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# This causes a call to the launch computer to compute the predicted intercept.
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# The launcher will then be cued to the proper angles (Subject to the slewing
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# limits defined below). This is a bit of a hack until the guidance computer
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# is changed...
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cue_to_predicted_intercept true
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slew_mode azimuth
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azimuth_slew_limits -180 deg 180 deg
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# Default to a single weapon on the vehicle
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quantity 1
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# Abort the launch if the launch computer didn't provide the required data
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require_loft_angle
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end_weapon
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