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|  MIL-I-81752A(AS)
3.7.1 General - The survivability and vulnerability of the entire
windshield system shall be designed in accordance with the
requirements of MIL-STD-2072.
3.7.2 Bird impact - The windshield, all supporting structure, -and
latching mechanisms that are positioned ahead of and protecting the
pilot/crew shall be designed to withstand the impact of a four pound
bird when the velocity of the aircraft (relative to the bird along the
aircraft flight path) is equal to the maximum operational true
airspeed achievable in level flight at altitudes up to 5000 feet.
Structural damage which impairs operation of the aircraft is not
In the event of a bird impact, the design of the
permissible.
windshield system shall not permit more than 50 percent of the
aircrew's forward visibility to be lost. Head clearance shall be
taken into account to preclude the possibility of pilot or crew injury
from excessive deflection of the windshield during bird impact.
Cockpit equipment clearances with the windshield shall be considered
to preclude equipment damage from excessive deflection of the
Internal damage such as glass or
windshield during bird impact.
plastic parts spalled off, structural members broken free, or lining
panels torn loose which could injure the pilot or restrict performance
of the pilots normal duties in the cockpit is not permissible.
3.7.3 Ballistic impact - When ballistic impact resistance is
required by the mission requirements of the aircraft, the forward
windshield, when made of bullet resistant glass, shall meet the
Ballistic impact requirements of other
requirements of MIL-G-5485.
windshield material shall be as specified in the detail specification
for the aircraft.
3.7.4 Nuclear detonation - The windshield and support structure
shall survive a 2.0 psi overpressure load and any loads resulting from
transient phenomena associated with the nuclear detonation as
specified in MIL-A-8869.
3.7.5 Lasers/particle beam weapons. The windshield shall defeat
threats from lasers and particle beam weapons as specified in the
aircraft detail specification.
3.7.6 Radar Cross Section (RCS) - The windshield system shall be
designed to minimize the RCS the requirements of the aircraft
detail specification.
3.7.7 Nuclear, Biological, Chemical (NBC) contamination - The
windshield shall resist the effects of NBC contamination as specified.
in the aircraft detail specification. The windshild shall also
withstand the detrimental effects of decontamination
solutions/cleaners without degradation of windshield performance.
3.8 Human
engineering
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