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Electronic Test Fuze
Wayne Worrell
Hamish Malin
NSWCDD G33
Precision and Advanced
Systems Branch
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ELECTRONIC TEST
FUZE - ETF
What is ETF?
z Designed to support realistic gun-shock testing of
myriad subsystems
z Digital processor can command and control
subsystems under test in flight.
z ETF is a diagnostic suite of sensors including 3
axis magnetometer and single axis accelerometer
z ETF is an analog and digital signal multiplexer that
encodes data into a single stream used to
modulate an RF transmitter
z ETF is a gun hardened system with self contained
power modules
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Program Overview
Electronic Test Fuze (ETF) designed to
support Guidance Integrated Fuze (GIF)
program
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Roll Brake
Assembly
Explosive Train
OR
TM Support Housing
Waffle
Canard
GPS
Antenna
Anti-Roll
Strake
Lift-GIF
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Drag Panels
Don’t Rotate
Control Panels that Rotate
Controlling the Spin Rate
and “throttling” the Drag
COTS Battery Module
HOB Sensor
GIF-Based GEU with
Advanced Anti-Jam and
Backup “Command Mode”
using PTS if GPS is Denied
4-Patch GPS Antenna System
GIF/VP Advantages:
• Simpler than Navy “Lift-GIF” yet more robust
in terms of Jamming and Reliability.
• ~$1K Less Expensive in Production
• Capable of a 15m to 20m CEP.
• Applicable to All Ammo Types.
• Meets or Exceeds PGK Inc 1/2/3 Requirements.
• Leverages All Previous Navy-GIF Developments
except the Roll Brake and Bearing Assemblies.
GIF COTS Actuator
VariPitch
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No Existing Product Could Meet GIF Requirements
Awarded Contract to Mayflower Communications for Development
of GPS Receiver
z Low Cost (< $500)
z Low Power (< 1W)
z Small Size (< 2 in2)
Phased approach:
z C/A Version w/ FPGA
Available Now!!
z P(Y) SAASM
Receiver (TRL 6)
Available Fall 2008
Not GIF-Centric
z One Product, Many Applications
40mm diameter
(VP Form Factor)
Miniaturized GPS SAASM
Receiver Technology
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Overview - ETF
Fully designed in-house at NSWCDD
Initially designed to support in-flight
testing of ElectReleaseTM for Lift-GIF
Designed to support realistic gun-shock
testing of