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The FMU-139 C/B Bomb Fuze is an electronic
impact/impact delay fuzing system
developed for use by both the U.S. Navy and the Air Force
in the MK 80 series and M117 low drag and high drag, guided
or unguided, high-explosive bombs. In addition to
impact/impact delay, the fuze is capable of accepting
a signal from a separate
proximity sensor.
PRODUCT DESCRIPTION
The fuzing system consists of a
cylindrical fuze and a closure ring in
the Navy Application. For application
in Air Force mode an additional
charging well generator (FZU-48) and
cable assembly are provided.
Key features of the FMU-139 C/B
include ease of installation and
preparation for flight, compatibility
with the proximity sensor fire signal,
ability to sense a high drag delivery,
and the ability to manually
set the arming and event times prior to take off or electrically
set them by cockpit selection at bomb release.
This cockpit selection is accomplished in the Navy mode
when power is transmitted to the fuze from the Fuze
Function Control System (FFCS). In the Air Force mode,
power is provided by the air driven alternator, which
is lanyard activated upon release from the aircraft.
Cockpit selection is not available in the Air Force mode.
The FMU-139 C/B has passed the appropriate
environmental tests of MIL-STD-331 and MIL-STD-810.
The fuzing system meets all U. S. & NATO Navy and
Air Force requirements, including the ISTRP/WSESRB
safety criteria for fielding. The FMU-139 C/B fuze is
compatible with most U. S. Air Force, Navy, Marine
Corps, and NATO Aircraft. All arming functions and fuzing
modes are contained in a single fuze that has an
independent arming rotor lock, dual independent launch
signals (Navy) and an air flow environment sensor
(Air Force), and automatic retard deceleration recognition.
KDI is under contract to produce
an initial order in excess of 76,290 FMU-139 C/B for
the U. S. Navy, Air Force, and NATO Allies. KDI will
also produce in excess of 76,290 FZU-48/B wind turbine
generators.
FEATURES
• Precision Mechanism
• Rugged Precision Design
• FPGA Controlled
• Surface Mount Technology
• Custom Integrated Circuitry
• Mechanical Timing Devices |
