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|  MIL-T-18232B(AS)
3.1.17
RELIABLE OPERATING LIFE. - The target shall have a reliable
operating life equal to that predicted utilizing MIL-HDBK-217
as a common basis. Minimum reliable operating life for complex targets shall be
at least 50 hours from the time of Navy acceptance to removal for bench servicing.
The reliable operating life shall be as specified in the detail specification and
shall include captive and free flight operations as applicable, preflight check-
outs, and systems test.
3.1.18
ENVIRONMENT. - The target and all components shall be capable
of withstanding the environmental ranges specified for
storage, transit, and flight, including temperature due to solar radiation, unless
the environment can be mitigated by simple means.
3.1.18.1
STORAGE AND TRANSIT. - The target and components shall be
capable of safe storage and transportation without the impair-
ment of their capabilities from the effects of the climatic extremes specified
for world-wide storage and transit in MIL-STD-210.
3.1.18.2
OPERATIONAL. - The target shall be capable of meeting
specified performance under the following surface, flight
and extreme pressure conditions.
3.1.18.2.1
SURFACE.- The target and components shall be capable of
meeting specified performance during and after exposure to
the climatic extremes specified for operation, ground, world-wide in MIL-STD-210.
3.1.18.2.2
FLIGHT. - The target and components shall be capable of
meeting specified performance during and after exposure to
the climatic extremes encountered in captive and free flight as applicable includ-
ing the effects of aerodynamic heating.
3.1.18.2.3
EXTREME PRESSURE. - The target shall operate satisfactorily
at atmospheric pressures experienced at all operational
altitudes. When necessary for satisfactory component operation, pressurizing of
target sections will be acceptable. Pressurized compartments shall be so designed
that access to the equipment contained therein will be possible for periodic and
pre-flight checks where required and that pressure sufficient for reliable
operation will be maintained during flight. Pressurized sections shall be so
designed that satisfactory operation will take place after long periods in
transit at high altitudes.
3.1.18.3
ACCELERATION, SHOCK, NOISE AND VIBRATION. - The target,
target sections and all components shall be capable of with-
standing without damage the acceleration, shock, noise and vibrations that occur
in normal handling, launching and flight conditions. Design control shall be
exercised over the target configuration (including shape, engine location(s),
equipment location, anti-vibration mountings for engines and equipment, and other
similar factors) and over structural and equipment design so as to obtain com-
patibility between estimated vibrations of structure and equipment and tolerable
level of vibration for these items. The noise environment shall be specifically
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