advanced light armament for combat vehicles · current "bat-winged" fragmentation plots...

1/18TTank-automotive & AArmaments COMCOMmand

Distribution Statement A: Unlimited

Advanced Light Armament forCombat Vehicles

NDIA Guns and Ammo Symposium16 April 2002

Steven D. Liss, P.E.Senior Mechanical Engineer


2/18Committed to Excellence

ALACV A/B Warhead

Baseline Design



STO Objectives - Exit CriteriaAir Bursting Munitions

• Develop and demonstrate airbursting capability in a 40mmcannon system– Exit Criteria:

• Achieve a 400% increase in lethal areaover a baseline 30mm HEI/PD (PGU-13B) round

• Air Burst within ±5 meters of its set airburst point

• Improve shape of lethal area overcurrent "bat-winged" fragmentationplots

Generic 30mm



ALACV A/B Warheads

t=0µs

t=30µs

Downselected Baseline(Gen 1)

Gen 2 – Reduced Fuze Volume

Gen 3 – Preformed Fragments

Provides forward Anti-Personnel and Anti-Materielfragments (vehicle sensors, UAVs)



Normalized Lethal Areas Prone- 30 Sec Assault

0.70

1.20

1.70

2.20

2.70

3.20

500 1000 1500 2000 2500 3000

Range (Meters)

Rat

io to

PG

U 1

3

PD

1

3

4

5

6

9

15

20

Baseline Design

HOB (Ft)

Low HOBsensitivity 3 to

20ft

2.5 of 4.0Goal



AMSAA Results30mm PGU 13 and ALACV Baseline

PGU-13 ALACV BaselineWith rear fuze



Demo Fuze Electronics• First prototype units have been fabricated

• Currently undergoing laboratory testing• 5 units will be subjected to 100,000 g’s in ARDEC 2 in.airgun

• Testing for stability of components when subjectedto high g shock• 1 unit tested to 96,000g’s – circuit functioned!

• Preliminary design for alternate timing circuit complete• Components being ordered• Will breadboard and lab test



ALACV Demo Fuze Electronicand Mechanical Subassemblies

Detonator Pin

PistonActuator Pin

GroundPin



27 µs

45 µs

Early break-up

ALACV Baseline Flash RadiographyALACV Baseline Flash RadiographyALACV Baseline Flash Radiography

ABW 17



27 µs

ThreadedConnection

Y=0.5Y0 Air

ALACV Baseline ModelingALACV Baseline ModelingALACV Baseline Modeling

Y=0ABW 01 ABW 17 ABW 18



Air Bursting Munitions Technologies

Have concepts to address need

Need customer support / platform.

Working with industry partners toexplore setting schemes

Working with industry partners toincrease level of capability

Considers LW40 Configuration, othertechnologies directly applicable to moredeveloped calibers.

Primary Goal of STO.

Notes AvailableFY04?

Technology

Launch Vehicle

TrainingCapability

PlatformIntegration

WeaponIntegration

FuzeTechnology

WarheadTechnology



DTO Objectives - Exit CriteriaAdvanced KE

• Develop and demonstrateadvanced KE penetrators usingtungsten or other alternativematerials– Exit Criteria:

• Achieve a 30% increase in behindarmor effects (BAE) over a baseline40mm APFSDS penetrator.

• Relate a 30% increase in the combined(BAE) to an increase in Probability ofKill (Pk) of 10% over the baseline.

Novel Penetrators



KE Designs TestedNOVEL Jacketed Rod w/ Frangible Tail Insert

“Tough” WHA

Length TBD

NOVEL approach with Lateral Effects

“Tough” WHA

Length TBD

Low Density Insert

“Frangible” WHA

DIA. TBD Emerging Results:• Results show this designmay be ineffective inmedium caliber

• Very expensive toproduce

• Inconsistent results,potentially related toassembly problems.

•Results indicate that thisdesign has the best chanceof meeting DTOrequirements.

• Simpler and less costlyto produce, with moreapparent benefit.



Advanced KE Technologies

KE Training concepts and methods are welldeveloped

Integration of KE technologies has minimalplatform integration concerns

Mann Barrel Demo sufficient to demoweapon integration alone

Considers LW40 Configuration, othertechnologies directly applicable to moredeveloped calibers.

Primary Goal of STO.

Notes AvailableFY04?

Technology

Launch Vehicle

TrainingCapability

PlatformIntegration

WeaponIntegration

PenetratorTechnology



Affordability

• Air Bursting Munitions:– Leveraging OICW/OCSW production for components,

projectiles will cost about 2 times the current cost of anHEI-T round, but use only ¼ the number of rounds,

• 100 of today’s rounds costing $4500 will be as effective as 25future rounds costing $1875

• Advanced KE:– An advanced KE penetrator will be more complex to

machine and produce than a standard penetrator, addingabout 10% to the production costs of advanced rounds,but use only ¾ of the number of rounds

• 100 of today’s APFSDS-T rounds costing $16500 will be aseffective as 75 future rounds costing $13575



FY03 Demo

Firing Demo from Mann Barrel &Auto Cannon

Demo in LW40 using “Final –1”iteration design or baseline

Integrated KEcartridges

Laboratory gun test with witnesspacks

ARL/SLAD firing and analysisof most optimal KEconfiguration

Advanced KEPenetrators

Paper study, with backuplaboratory firing data

Modeling and SimulationScalability toother calibers

Firing Demo, both A/B and KEconfigurations

Demo LW40 from Mann Barreland Auto Cannon

LaunchSystem

Mann Barrel Demo• ARDEC Fuze

• GD – OTS Fuze• ATK Fuze• CTAI Warhead with ARDEC fuze• ARL Fuze in inert warhead

Demo pre-set fuzed ALACVwarheads from Mann Barrels(may not be full 400%configuration)

IntegratedWarhead

Laboratory / TECOM siteDemo 400% increase in lethalarea in arena test

Full WarheadSolution

Demo TypeDetailsDemo



Major TechnicalAccomplishments

• Air Bursting Warhead development has demonstrated 250%improvement over baseline.– Modeling matches fragmentation test data within 5%.

• Developed innovative algorithm for sensor fusion withARL for accurate control of air burst point without use ofmuzzle velocity correction.

• Baseline Novel KE demonstrated to defeat target ofinterest without loss of defeat range. (No tradeoff toachieve DTO goals anticipated.)

• Established 5 cooperative R&D agreements with industry:– Air Bursting Fuzes: Alliant TechSystems and GD-OTS– KE Penetrator Materials: Aerojet Ordinance– Case Telescoped Technology: CTA International



ALACV CRADAsARDEC AirBurstingMunitions ARDEC

Advanced KE

ALACVFY03 Demo

ØAlliant TechsystemsØPRiMEX (GD-OTS)• Provide Industry Developedfuze or fuze electronics forinclusion in our modularDemo• Get Test Data, range time,IPT membership, engineeringsupport

ØAerojet Ordnance –Tennessee• Provide Advanced KEmaterials and penetratorconcepts

• Get Test data, range time, IPTmembership, engineeringsupport.

ØCTAI/RONA• Provide CT-2000 gunsystem, CT ammocomponents, current CTexpertise• Get ARDEC Demo Fuzesin CT configuration, rangetime, IPT membership

ModularDemo Fuze

Industry A/BFuzes

Industry FuzePackage

JointPackage

ARDEC TimedFuze Package

Industry Fuze TechnologyIndustry Materials Technology

Cased Telescoped Technology

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