„In Barrel Power Supply“ - ... · PDF fileSpannung[V] 12R1#1 Spannung[V] 12R2#2 Spannung[V] 20R1 Spannung[V] 55R1

„In-Barrel Power Supply“

59th Annual Fuze Conference

May 5th, 2016

Harald Wich

Diehl & Eagle Picher GmbH

Copyright Diehl & Eagle Picher GmbH2 Copyright Diehl & Eagle Picher GmbHD&EP\Presentations\Fuze\NDIA 59 Fuze Conf\59th Annual Fuze Conference_In Barrel Power Supply, May 2016

„If you can´t tell it in 15 minutes;

Don´t tell it at all“

Geno Leech, Fisher Poet,

Chinook WA, USA

… let´s get started

Copyright Diehl & Eagle Picher GmbH3 Copyright Diehl & Eagle Picher GmbH

Overview

History, the large Calibre Fuzes

Electrolyte Distribution

High Acceleration and Spin

Miniaturised Fuze Battery

Load Management

Conclusions

D&EP\Presentations\Fuze\NDIA 59 Fuze Conf\59th Annual Fuze Conference_In Barrel Power Supply, May 2016


Legacy Fuze Batteries

PS115 (lead)

MOFA post launch

DEP 1400x series

Rise-time requirements

50 milliseconds or more to minimum voltage

for launch velocities between 300 – 1000 m/s

trajectory delta < 50 – 200 m

likely suitable for time- prox- point-detonating- fuze


Legacy Battery Rise-Time OK for legacy Fuzes!


New (challenging) Requirements


Smaller calibre

direct fires

short muzzle safety distance

early functions – in-/shortly after barrel exit

more precise timing

Typical Requirements

DoD 2014.1 SBIR 10 ms (low current), 100 ms (max current)

various DEP customers single digit ms

Factor of ten or more Rise-Time Reduction!


Electrolyte Distribution


Spin

No Pain, no Gain

barrel

„low charge“ acceleration and spin

force vector

Acceleration


The 155 mm Artillery Dilemma


L15A1/PzH2ooo/L52

0

2000

4000

6000

8000

10000

12000

14000

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

time / ms

ac

ce

lera

tio

n /

g

Acceleration and Spin can be rather low


Activation in 40 mm Infantry Grenade

DEP 1400x at RT



Miniature Fuze Battery Activation

High Acceleration (no/low spin)


DEP 14103 at -46°C


Miniature Battery Rise Time

Low Acceleration (2500 g´s continuous, no spin)



Load Dependence of Rise Time

0

1

2

3

4

5

6

7

0 0,01 0,02 0,03 0,04 0,05 0,06 0,07 0,08 0,09 0,1

Vo

ltag

e [

V]

time [s]

DEP14020.03; 2s; -46C, U= 9000 1/min; Dez.15

Spannung [V] 8R3

Spannung[V] 12R1#1

Spannung[V] 12R2#2

Spannung[V] 20R1

Spannung[V] 55R1



Load Dependence of Rise Time

Leistung [W/cm²] 20R1

Leistung [W/cm²] 12R

Leistung [W/cm²] K-U 12R

Leistung [W/cm²] RT 12R

Leistung [W/cm²] K-U 8R3

Leistung [W/cm²] 8R3

Leistung [W/cm²] RT 8R3 #10,000,050,100,150,200,250,300,350,400,450,50

0,0

00

0,0

04

0,0

08

0,0

12

0,0

16

0,0

20

0,0

24

0,0

28

0,0

32

0,0

36

0,0

40

0,0

44

0,0

48

0,0

52

0,0

56

0,0

60

0,0

64

0,0

68

0,0

72

0,0

76

0,0

80

0,0

84

0,0

88

0,0

92

0,0

96

0,1

00

Po

werd

en

sit

y [

W/c

m2]

time [s]

DEP14020.03; 2s; -46C, U= 9000 1/min; Dez.15 0,45-0,50

0,40-0,45

0,35-0,40

0,30-0,35

0,25-0,30

0,20-0,25

0,15-0,20

0,10-0,15

0,05-0,10

0,00-0,05



Recommended Load Characteristics

Load Profile

0

5

10

15

20

25

30

35

40

0 50 100 150 200 250 300

cu

rren

t [m

A]

time [ms]


Copyright Diehl & Eagle Picher GmbH14 Copyright Diehl & Eagle Picher GmbHD&EP\Presentations\Fuze\NDIA 59 Fuze Conf\59th Annual Fuze Conference_In Barrel Power Supply, May 2016

Conclusion

Lithium Reserve Batteries provide very short Activation Time

under high forces

Acceleration

Spin

if properly designed

under proper load management


Conclusion

Lithium Reserve Batteries provide very short Activation Time

under high forces

Acceleration

Spin

if properly designed

under proper load management


Lithium Reserve Batteries are able to provide “In-Barrel” Power!


Thank you for your attention!

Questions?



Diehl & Eagle Picher Contact

How to Contact us

• Presenter Harald Wich

• Mail Diehl & Eagle Picher GmbH

Fischbachstrasse 20

90552 Roethenbach a d Pegnitz

Germany

• Phone +49-911-957-2100

• Fax +49-911-957-2485

• Email [email protected]

• Web www.battery.de


Documents

„In Barrel Power Supply“ - ... · PDF fileSpannung[V] 12R1#1 Spannung[V] 12R2#2 Spannung[V] 20R1 Spannung[V] 55R1