Q2.
At what point does the impact-firing fuze
function?
Q3.
List the two types of impact firing fuzes.
Q4.
At what point does the mechanical time fuze
initiate the firing train?
Q5.
In
acceleration-deceleration
fuzes,
what
force causes the fuze to function?
Q6.
Name the fuze that senses, usually by
electronic means, the presence and distance
of a target.
SERVICE ROCKET ASSEMBLIES
Airborne rockets, consisting of fuzes, warheads,
and motors, are combined and assembled in various
configurations to meet specific tactical requirements.
For example, a rocket assembly that consists of a
fragmentation warhead armed with a proximity fuze is
entirely unsuitable for use against an armored tank or
bunker. Likewise, the GP warhead fuzed only with the
Mk 191 base fuze is relatively ineffective against
personnel or unarmored targets. With each specific type
of target, the right combination of warhead, fuze, and
motor is assembled from the wide variety of
components available.
2.75-Inch FFAR and LSFFAR
The 2.75-inch airborne rocket is an effective
air-to-ground weapon against most targets. The FFAR
is an air-to-air weapon. Fired in large numbers to
produce a shotgun pattern, FFARs are carried and
launched from 7- or 19-round launcher packages.
These packages are described later in this chapter.
The LSFFAR is accurately and safely launched
from low-speed aircraft and helicopters. Because of
their spin feature, they cannot be ripple fired. LSFFARs
are fired singly from 7- or 19-round launchers that have
single-fire capability.
The 2.75-inch rockets are received through the
supply system in three configurations as follows:
1.
Complete rounds in 7- or 19-tube launchers, or
in wooden boxes
2.
Rocket motors in 7-tube launchers, and the
fuze-warhead
combination
in
separate
shipping containers
3.
Separate components in authorized shipping
containers
Squadron ordnancemen based ashore order and
may assemble components for current operations.
Aboard
ship,
weapons
department
ordnancemen
assemble the components according to the ship's air and
load plan. They deliver these assemblies to squadron
ordnancemen for loading onto aircraft.
For detailed information, such as authorized
assemblies, safety precautions, and restrictions, you
should refer to Aircraft Rocket Systems 2.75-inch and
5.0-inch NAVAIR 11-75A-92. You can find additional
information in specific aircraft loading and tactical
manuals.
5.0-Inch FFAR
Like the 2.75-inch rocket, the 5.0-inch FFAR can
be
assembled
in
various
warhead
and
fuze
combinations. The Mk 71 motor gives the additional
advantage
of
one
motor
for
all
launch-speed
applications.
The 5.0-inch rocket is carried and launched from
multiple-round launchers. Because of their large size
and weight, the number of rounds per launcher is
reduced to four. The 5.0-inch rockets are received
through the supply system in the following two
configurations:
1.
Rocket motors in a 4-round launcher and fuzes
and warheads in separate shipping containers
NOTE: The Mk 191, Mk 193, and Model
113A fuzes are permanently installed in the
warheads.
2.
Separate components in separate shipping
containers
REVIEW NUMBER 4
Q1.
What is the usual configuration of the
2.75-inch airborne rocket?
Q2.
Aboard ship, who assembles rocket com-
ponents for current operations?
REVIEW NUMBER 3 ANSWERS
A1.
When classified by their mode of operation,
fuzes
are
classified
as
impact
firing,
mechanical time, acceleration-deceleration,
or proximity.
A2.
Impact-firing fuzes function when the rocket
strikes the target that offers enough resistance
to cause actuation of the parts.
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