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|  MIL-R-70503A(AR)
switch is held in the ON position. The fuze charging cycle shall
not exceed 60 milliseconds. The time between initiation of the
trigger switch and the first squib firing pulse shall not exceed
120 milliseconds.
3.5.2.1.1.6 Penetration selection. The function of remotely
setting the XM433 or equivalent fuze shall permit selection of
impact detonation, canopy penetration delays, or bunker
penetration delays. The subsystem shall provide for both manual
and automatic remote fuze setting.
Manual - The controls shall permit manual setting for
a.
tree heights ranging from 10 to 45 meters in 5 meter
increments. The manual bunker delay setting shall defeat
bunkers (logs and dirt) up to 3 meters thick.
Automatic - Automatic tree height mode position shall be
b.
provided to permit automatic fuze setting for two
ballistically different warheads.
3.5.2.1.1.7 Range selection. Provisions shall be made to
select the range for detonation of rockets equipped with XM439 or
equivalent airburst fuzes.
a.
Manual - Distance-to-target selector switches shall
permit setting fuzes from 500 meters to 6000 meters. The
manual setting shall be labeled in 100 meter increments.
Automatic - The range selection shall provide for an
b.
input from the FCS for automatic fuze setting. A minimum
of 575 increments of fuze setting are required in the
automatic mode.
3.5.2.1.1.8 Rocket firing modes. The DU/RMS shall have
provisions to select the following modes of fire.
3.5.2.1.1.8.1 Manual.
Single fire - A single rocket of the type selected shall
a.
be fired for each closure of the wing stores, trigger
switch. On repeated closures of the trigger, rockets of
the type selected shall alternate from side to side of
the helicopter to maintain a safe weight and balance.
Outboard launchers shall be fired first.
Pair fire - Two rockets of the type selected, one from
b.
each side, shall be fired for each closure of the wing
stores trigger switch. If outboard and inboard launchers
contain the same type of warhead/fuzes, outboard
launchers shall be fired first. The time cliff< ence
between the pair of firing pulses shall not exceed 1
millisecond.
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