precision enhancement build on a multi functional … enhancement build on a multi functional fuze...

Precision Enhancement build on aMulti Functional Fuze for 155 mm Artillery Munition

A Company ofDiehl VA Systeme

NDIA_47_Fuze_09-04-2003.PPT

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Precision Enhancement build on a

Multi Functional Fuze for 155 mm Artillery Munition

Germany

47th NDIA

Annual Fuze ConferenceApril 8 - 10, 2003

New Orleans, LA, U.S.A.

Precision Enhancement build on aPrecision Enhancement build on a

Multi Functional Multi Functional Fuze Fuze for 155 mm Artillery for 155 mm Artillery MunitionMunition

GermanyGermany

4747thth NDIA NDIA

Annual Annual Fuze Fuze ConferenceConferenceApril 8 - 10, 2003April 8 - 10, 2003

New Orleans, LA, U.S.A.New Orleans, LA, U.S.A.

Bundesamt für Wehrtechnik und BeschaffungBOR Dr. rer. nat. Olaf Reusch

D-56073 Koblenz

Diehl Munitionssysteme GmbH & Co. KGDipl.-Ing. Karl B. Kautzsch

D-90552 Roethenbach / Pegnitz





ContentContentContent

l Part I Required Capabilities

Ø Operational Gains

Ø Requirements and Solutions

l Part II Technical Solution

Ø Posing the Problem / System Analysis

Ø System Requirements / System Approach

Ø Performance / Tactical - Operational Benefits

Ø Results of successful System Demonstration on 26 June 2001





Operational GainsOperational GainsOperational Gains

l Increased Accuracy

Ø Better engagement of pinpoint targets

Ø Minimized collateral damage

l Decreased number of rounds to defeat targets

Ø Increased survivability

Ø Reduced logistic burden





l Increased Accuracy

ð Course Correction Device build in Fuze

l Low Cost

ð Air Brake Range Correction ( 1-D )

l Fire & Forget

ð GPS controlled / autonomous Operation

l Retrofit for existing shells

ð Standard 2-inch thread Fuze Shape including multiple functions

Requirements SolutionsRequirements Requirements Solutions Solutions





1-D Trajectory Correction Fuze (TCF)1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)





1-D Trajectory Correction Fuze (TCF)Posing the Problem / Technical Approach

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)Posing the Problem / Technical Approach

Active Trajectory Correction (1 D)Active Trajectory Correction (1 D)

Ø Sensor Task

Detection of ActualTrajectory Variation

Ø Control Actuation Task

Well-Aimed Trajectory Correction

Ø Algorithm Task

Calculation and Coordinationof optimal Drag Brake Deployment

σ

σTarget

Nom

inal

Traje

ctor

y

WindAir Temperature

Air PressureBallistics

Launch ErrorMuzzle Velocity Error

Uncorrected Miss Distancein Down Range





1-D Trajectory Correction Fuze (TCF)System Analysis / Required Correction Capability

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)System Analysis / Required Correction Capability

3σ2σ

Optimal Correction CapabilityOptimal Correction Capability

20,0

16,0

12,0

8,0

4,0

0,0Hit

Per

cent

age

with

in15

m R

adiu

s (≅

Poi

nt T

arge

t)[%

]

0,0 1,0 2,02,0 3,0 4,0

Correction Capability [Sigma]

MPIDispersion

R = 27 kmR = 27 km

Miss DistanceMiss Distance

200

-200

200 400-400 -200





1-D Trajectory Correction Fuze (TCF)System Requirements

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)System Requirements

l Maximum Correction Capabilityof ± 2 σ = 650 m Required

650 m

± 2 σ

l Induced Error in Cross Range is Neglectible

l Optimum Correction Error in DownRange Resulting for 1 σ = 25 m

l Halving of Number of RoundsAchievable for 1 σ < 60 m

100

80

60

40

20

0150 125 75 50 25 0

FHb FSt

100Correction Error inDown Range [m]

Rel

. Nu

mb

er o

fR

ou

nd

s [%

]

Point Target Engagement

RWF FSt

50 %

Optimum at 25 m

60 m





1-D Trajectory Correction Fuze (TCF)Sensor / Control Actuation Approach

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)Sensor / Control Actuation Approach

l Sensor Options

Ø Onboard GPS

w Accuracy independent of Range

w Fire & Forget Solution

Ø Ground based Radar and Uplink

w Accuracy dependent of Range

w Munition Tracking necessary

w Longer Stay at Firing Position

l Control Actuation

Ø Simple Mechanicsw no moving partsw no servo required

Ø Control

w time discretew constant force

Ø Effectivenessw time variablew integral effect dependent on time of flightw limited to down range shortening (1 D)

GPS - the most Cost andMission effective SolutionGPS - the most Cost and

Mission effective SolutionTrajectory Correction by

Drag MagnificationTrajectory Correction by

Drag Magnification

10





1-D Trajectory Correction Fuze (TCF)Correction Algorithm Task

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)Correction Algorithm Task

Hit Point Prediction required forOptimal Drag Brake DeploymentHit Point Prediction required forOptimal Drag Brake Deployment

Tra

ject

ory

Co

ntr

acti

on

[m]

Flight Time [s]

Defined for nominalTrajectory before Launch

Brakecharacteristics

Target

∆xnomNom

inal

Tra

ject

ory

Correction Area

Max. Correction

Capability ±2 σ

Aim PointPredictedHit Point

∆ximp

11





1-D Trajectory Correction Fuze (TCF)Performance

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)Performance

Ø Simple and robust Algorithm

Ø Resulting Correction Error for Ideal GPS Performance ~ 25 m

Ø Resulting Correction Error for noisy GPS Performanceand for total GPS Deficiency at 10 km from Target Position ~ 40 m

Ä Halving of Number of Rounds achievable evenunder severe Jamming Conditions for GPS

Ä Halving of Number of Rounds achievable evenunder severe Jamming Conditions for GPS

12





1-D Trajectory Correction Fuze (TCF)Tactical - Operational Benefits (HE-Round)

1-D 1-D TTrajectory rajectory CCorrectionorrection FFuzeuze (TCF) (TCF)Tactical - Operational Benefits (HE-Round)

l Reduced Number of Rounds forTarget Kill by Factor 2 - 2,5

l Reduced Cost / Kill by Factor 2

l Reduced Area of Miss Distance(Collateral Damage) by Factor 4,5

l Reduced Target Engagement Time

l Reduced Stay at the Firing Position

l Reduced Logisitic Burden

13





Successful Demonstration of TCF26 June 2001, WTD 91, Meppen

Successful Demonstration of Successful Demonstration of TCFTCF26 June 2001, WTD 91,26 June 2001, WTD 91, Meppen Meppen

Flightpath / Detail

0,0

500,0

1.000,0

1.500,0

2.000,0

2.500,0

3.000,0

3.500,0

14.000,0 14.500,0 15.000,0 15.500,0 16.000,0 16.500,0 17.000,0 17.500,0 18.000,0

X [m]

H [m

] Pre-Firing 1

Pre-Firing 2

Metal Brake

Fabric Brake

Flightpath

0,0

500,0

1.000,0

1.500,0

2.000,0

2.500,0

3.000,0

3.500,0

4.000,0

4.500,0

5.000,0

0,0 2.000,0 4.000,0 6.000,0 8.000,0 10.000,0 12.000,0 14.000,0 16.000,0 18.000,0

X [m]

H [

m]

Activation Time

∆X = 600 m ∆X = 260 m

Ground / Detail

80.400,0

80.420,0

80.440,0

80.460,0

80.480,0

80.500,0

80.520,0

80.540,0

80.560,0

80.580,0

80.600,0

19.200 19.250 19.300 19.350 19.400 19.450 19.500 19.550 19.600 19.650 19.700 19.750 19.800 19.850 19.900 19.950 20.000

Down Range [m]

Cro

ss R

ang

e [m

]

Pre Firing 1

Pre Firing 2

Metal Brake

Fabric Brake

Aim Point

Firing Direction

99% - Area

Firing Position: 2.21680.925

Aim Point: 19.80080.500

14:00 h14:06 h

14:16 h14:46 h

14





Successful Demonstration of TCF26 June 2001, WTD 91, Meppen

Successful Demonstration of Successful Demonstration of TCFTCF26 June 2001, WTD 91,26 June 2001, WTD 91, Meppen Meppen

Drag Coefficent

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0 40,0 45,0 50,0 55,0 60,0 65,0

Time [s]

CW

Pre Firing 1

Pre Firing 2

Metal Brake

Fabric Brake

CW Increase Factor 5

CW Increase Factor 3

15





Successful Demonstration of TCFGPS Reception

Successful Demonstration of Successful Demonstration of TCFTCFGPS ReceptionGPS Reception

l 4 Satellites as a Minimum forCalculation required

l 7 Satellites for Calculationmostly available

Comparison of Flight Path Data Radar / GPS

0

500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

4.500

5.000

0 2.000 4.000 6.000 8.000 10.000 12.000 14.000 16.000 18.000X [m]

H [

m]

RadarGPS

Activation Time

16





SummarySummarySummary

l Diehl Munitionssysteme and Junghans Feinwerktechnik havedeveloped the TCF concept under contract of the German MOD

l Diehl Munitionssysteme has successfully demonstratedthe Trajectory Correction Module under contract of the German MOD

l Diehl Munitionssysteme and Junghans Feinwerktechnik areready to enter the full scale development phase of TCF

17






Precision Enhancement build on aPrecision Enhancement build on aMulti FunctionalMulti Functional Fuze Fuze for 155 mm Artillery for 155 mm Artillery Munition Munition

Thank you for your attentionThank you for your attentionThank you for your attention

Bundesamt für Wehrtechnik und Beschaffung Diehl Munitionssysteme GmbH & Co. KGD-56073 Koblenz D-90552 Roethenbach / Pegnitz

Germany

Bundesamt für Wehrtechnik und Beschaffung Diehl Munitionssysteme GmbH & Co. KGD-56073 Koblenz D-90552 Roethenbach / Pegnitz

Germany

18





QUESTIONS ?QUESTIONS ?

19





Points of ContactPoints of ContactPoints of Contact

Diehl Munitionssysteme GmbH & Co. KG

Fischbachstrasse 16

D-90552 Roethenbach / Pegnitz

Germany

Technique: Dipl.-Ing. Karl B. KautzschTel.: *49 - 911 - 957 - 2936Fax: *49 - 911 - 957 - 2710e-mail: [email protected]

Marketing: LTC (ret.) Georg StammelTel.: *49 - 911 - 957 - 2995Fax: *49 - 911 - 957 - 2653e-mail: [email protected]

Bundesamt für Wehrtechnik und Beschaffung

Ferdinand-Sauerbruch-Strasse 1

D-56073 Koblenz

Germany

BOR Dr. rer. nat. Olaf ReuschTel.: *49 - 261 - 400 - 7436Fax: *49 - 261 - 400 - 6593e-mail: [email protected]

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