To: 49th Annual Fuze Conference - IIS7proceedings.ndia.org/5560/Thursday/Session_IV-A/Spencer.pdf© 2004 Kaman Aerospace Corporation 1 3/29/05 Buried Target Fuze To: 49th Annual Fuze

1© 2004 Kaman Aerospace Corporation© 2004 Kaman Aerospace Corporation 3/29/05

Buried Target Fuze

To: 49th Annual Fuze Conference

By: Dale Spencer, Kaman

Contributing Author:

Dr. Helmut Muthig, TDW


Presentation Overview

The Buried Target Fuze (BTF) Team

The Programmable Intelligent Multi Purpose Fuze (PIMPF) as the basis for BTF

• Rationale, Benefits, Concept, etc.

NAVY Foreign Comparative Testing for PIMPF


BTF Team

General Overview – BTF– TDW has a qualified fuze (PIMPF) and is in production for the

German Taurus Missile and the Norwegian Naval Strike Missile.• Hard target penetrator• Counts voids/ (hard) layers w/ back-up timer• Detonates at the prescribed condition

– Kaman is the producer of the Maverick, BLU-116, JPF, SLAM-ER, Tomahawk, and JASSM “penetration” Fuzes.

– The Kaman and TDW team are combining their Fuzing experience to:

• Produce PIMPF in US for “New Warhead” applications, e.g. Tmhwk.• Re-package the PIMPF Function for applications in 3” US Fuze Well

– Buried Target Fuze (BTF)– Retain PIMPF Void Sensing Electronics without modification


BTF Rationale

Opportunity to quickly meet Hard and Deeply Buried Target needs:– For New and Reworked Warheads use PIMPF Fuze-well design

• Fuzes in the field in approx. one year– For existing warheads Re-Package into US Std. Fuze-well

• Fuzes in the field in approx. two years– Design facilitates either Missile or Bomb Fuze configuration

Provide Layer and Void Counting capability coupled with– Mission/ Cockpit Programmability– Back-up timer capability– Robust proven environmental worthiness– High Reliability


BTF Benefits

Reduced Risk for Layer and Void Counting Applications– Proven/ In Production Technology – Fuze does not require tuning– Uses smart software to extract penetration events rather than

double integrating sensor signals– Software handling mitigates instrument baseline drift bias in

sensors as sensors experience multiple high “G” loads

Reduced Development Time -- Minimal Development Time, Repackage vs. Redesign utilizing proven, in-production Fuze

Maintain Safety – Compatible with “Out-of-Line”– PIMPF meets STANAG 4187 NATO equivalent to

US Mil-Std-1316.


The PIMPF/ BTF Threat: Target Spectrum

Point Targets Area Targets

A/C in the Open

Fixed SAM-Sites

ShelterBunker: direct / indirectsignature

Taxiway & Runway

Bridge PierAmmunition Store Ships in Port


The Initial BTF Concept

~4.5” to 3” Dia.

MSL to Bomb Fuze Add Gag Rod

Retain Electronics

Re-Package S&AUtilize FMU-143

Booster

PIMPF BTF


PIMPF Functional Block Diagram

Micro-Controller Electrical I/O

Firing Circuit

Power Supply

nvSRAM

Non volatile memory

ROM RAM

PIMPF

Softwarea

Shock Sensor Amplifier Filter

AD

A/D-Converter

CWC

(Distance Sensor)

(Precharge)

(Impact Switch)


Software Functions

Communication Software

Commands

Self test results

Fuzing program

CWC

Firing

Signal

Impact /

Exit EventsPenetration Algorithm

Acceleration /

Shock

Algorithm Parameters

• Self Test • RAM / ROM Ports • Acceleration Sensor• Amplifier Gain• Filter Characteristics• (Distance Sensor)• (Impact Switch) etc.

Firing Algorithm

FiringParameters

Fuzing Program


BTF Program Flow for Bomb & Missile

BTF

During FreeFlight Phase

During CaptiveFlight Phase

Ground LoadingUnit

PortablePortableCMBRETRNS

RS 422

CarryingAircraft

MIL-STD-1760/1553

JDAM/Missile TRNS

RS 422

MissionPlanningSystem

At Installation of theMission Planning System

FuzingPrograms

During Mission Planning Process

During Mission Loading Process


Experimental Results/Number of Tests performed

Target Type (MEPHISTO) No. of Tests

"Bunker" 43 layers of reinforced concrete"Shelter" 6(Sand / reinforced concrete / gravel / reinforced concrete)"Heavy Bunker" 4(one massive layer of reinforced concrete)"Ship" 3(2 steel plates) Total (full-scale): 17 (plus 8 half-scale)

"Ship Target" (NSM) 7" Taurus Missile Live Fire" 2

Grand Total: 34 out of 34 Succesful Tests


Test Results - "Bunker" Target

Concrete Layer 1

Initiation

Concrete Layer 2

Concrete Layer 3


Impacts ExitsInitiation


3 Concrete Layers

Catcher Plate



3 Concrete Layers

Catcher Plate


Test Results - "Heavy Bunker" Target

WTD91

Initiation

Massive Concrete Layer


Massive Target Catcher Plate

ImpactsExits

Initiation


Test Results - "Ship" Target

WTD91

Steel Plate 1

Initiation

Steel Plate 2


Catcher Plate

Steel Plate 1 Steel Plate 2

Initiation

Impacts

Exits


Key Qualified Requirements of PIMPF

Shock resistance: 10,000 g / 10 msec axial(required for Mephisto 8,000 g / 5 msec lateralexpected to withstand higher)Operating temperature : - 40 °C to + 63 °C

(Electronics tested to -54°C)Storage temperature : - 54 °C to + 71 °CEnvironmental Stressing: acc. to MIL-STD-331 and 810EMC Requirements : EUROFIGHTER and TORNADOReliability (Predicted): calculated acc. to MIL-HDBK 217– 85,000 hr storage 0.9856– 12 hr captive flight 0.9999– 45 min freeflight 0.9998


Foreign Comparative Test for PIMPF

Click on button to bring up FCT viewgraphs courtesy of NAWC/CLy of

NAWC/CL

Dale Spencer, 860-632-4477

dspencer–[email protected]

http://www.kaman.com/kamanaero.html

EADS/ TDWEADS/ TDW -- Herb Smith

H.J. Smith International, Inc703-406-3400email: [email protected]

To: 49th Annual Fuze Conference - IIS7proceedings.ndia.org/5560/Thursday/Session_IV-A/Spencer.pdf© 2004 Kaman Aerospace Corporation 1 3/29/05 Buried Target Fuze To: 49th Annual Fuze

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