Small, high specific Energy Power Sources for Medium Caliber Fuzes

Transcription

Small, high specific Energy Power Sources
for Medium Caliber Fuzes
57th Annual Fuze Conference
July 30th, 2014
Harald Wich
Diehl & Eagle Picher GmbH
Overview

Terminology

Fuze Power Requirements

How much is this

Specific Densities

What’s around

Conclusion and Future Work
Diehl & Eagle Picher GmbH, A company of Diehl BGT Defence and Eagle Picher Technologies
2
Copyright Diehl & Eagle Picher GmbH
Terminology
Wh
W
mAh
C/
5
3
Terminology

The Electric Circuit
Wh
Current
Load
- Voltage -
Source
- Voltage -
Internal Resistance
•
Voltage [V] x Current [A] = Power [W]
•
Power [W] x Time [s] = Energy [Ws = J]
+
Current [A] x Time [s] = Capacity [As, Ah]
+
Power [W]
1
or
= C - Rate
Energy [Wh]
Discharge Time h
mAh
C/
4
5
What is needed for a Fuze

Power/Energy Requirement depends on
+
Complexity of Fuze

Igniter Circuit

Functions

Speed


+
Component Selection
+
Design
+
Flight Time
Hear more in # 16521
5

Legacy Large Caliber Fuzes
8
7,5
7
6,5
6
788J
5,5
Power P [W]
5
4,5
4
430J
3,5
3
2,5
2
364J
1,5
180J
1
140J
0,5
0
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Voltage U [V]
6

New Medium Caliber Fuzes
1,3
1,2
10 J
1,1
1
0,9
Power P [W]
0,8
0,7
0,6
5J
0,5
0,4
0,3
0,2
0,1
1,4 J
1J
0
0,02 J
0,1 J
0,06 J
0
1
2
3
Voltage U [V]
7
4
5
How much is that

A few comparisons
I
106
@ 60 mph H
G Beta Batt
IG HV F
E Heat 1 cm³
103
Al-Cylinder 1 cm³
D
Atmos
C Newton
1
1“ drop
B
A
10-3
8
Specific Densities

Why is that so important to you?
•
•
Power Sources are characterized by capacity

Per weight

Per volume
Fuzes are usually restricted by volume
Energy [J]
100
1
0,01
0
1000
2000
3000
4000
5000
6000
7000
8000
9000
10000
Volume [mm³)
9
Specific Densities

Energy vs Power
•
•
Beta Batt
ELDC
Energy
40 J / mm³
 very high
Power
125 nW / mm³
 very low
Energy
4 mJ / mm³
 low
Power
125 mW / mm³
 high
Example: LTC-Primary Battery
10
Specific Densities

C-Rate
•
Tesla Roadster 56 kWh (≈ 200 MJ), max Power 215 kW  4 C
•
Fuze Battery Large Cal (e.g. 500 J)
Medium Cal (e.g. 5 J)
200 s (≈ 1/20 h)
 20 C
20 s (≈ 1/200 h)  200 C !
 If the Battery can manage only 4 C (like a Tesla Roadster)
it needs 50 times the Capacity the Fuze requires !
11
What’s around

Legacy
„Baghdad Batterie“
250 BC
„Patent K. STAMM“
1925
12
„Duracell AR-13D“
1971
What’s around


Capacitors
+
Power Density

Energy Density;

How to charge
- J/mm³
Set-Back Generators; Piezo; Electromagnetic
+
Power Density

Energy Density;

Short Pulse only
< 10 μJ/mm³
13
What’s around

Fuze Batteries miniaturized
DEP-14103
DEP-14104
DEP-14202
3 J; 3 mJ/mm³
10 J; 7 mJ/mm³
100 J; 50 mJ/mm³
50 mW
75 mW
500 mW
Ø 11 mm; h 11 mm
Ø 10/11 mm; h 10/13 mm
Ø 10/20 mm; h 3/11 mm
14
What’s around

A novel solution
in barrel heating
•
Converter
+
Heat Source
aerodynamic heating
pyrolants (fuel)
Thermo Electric Generator
ηMax
∞
Thot − Tcold
1 + ZM ∙ T − 1
=
∙
T
Thot
1 + ZM ∙ T + Tcold
E=
°
hot
P (t)
15
What’s around

TEPS
•
High Energy Density Fuel 4 J/mm³
•
High burning Temperature
•
Independent of operating
Temperature (∆-principle)
16
What’s around

TEPS
•
Max Power at Start
•
Longer Power than Set-Back

Easy charge of

Small capacitor
•
High Energy Density
•
Independent of Spin
17
What’s around

TEPS
DEP-15001
DEP-15030
DEP-15060
100 mJ; 100 μJ/mm³
200 mJ; 120 μJ/mm³
2000 mJ; 650 μJ/mm³
100 mW
200 mW
1000 mW
Ø 12.6 mm; h 12.5 mm
Ø 17 mm; h 12.5 mm
Ø 23.6 mm; h 12.5 mm
•
Easy to scale Voltage, Energy, Life-Time, Size
18
Conclusion and Future Work
+
Two new Product Lines of small Fuze Power Supplies
+
Meet all known Requirements
+
Significant increased Energy Density
+
Excellent Power Density
+
Spinning and Non-Spinning

Future work
•
Manufacturability
•
Live-Firing
•
Qualification
19
Thank you for your attention!
Questions?
20
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
+49-911-957-2073
•
Fax
+49-911-957-2485
•
Email
harald.wich@diehl-eagle-picher.com
•
Web
www.battery.de
21

Small, high specific Energy Power Sources for Medium Caliber Fuzes

Transcription

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