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
[email protected]
•
Web
www.battery.de
21

Small, high specific Energy Power Sources for Medium Caliber Fuzes

Transcription

Similar documents

PROJECT PHOTOS

Alternative Power Supply for Medium Caliber Fuzes

Black Filling Hole Cyan Filling Hole Magenta Filling

Fast Activating Miniature Lithium Thionylchlorid Reserve Battery