MIL-DTL-52869C
3.
REQUIREMENTS
3.1 Description. The Passive Ultrasonic Sensor Group (PUS) shall consist
of one processor, passive signal ultrasonic, MX-9443/FSS-9(V), (hereinafter
called "processor"), combined with a minimum of one to a maximum of twenty
receivers, passive signal ultrasonic, R-1860/FSS-9(V) (hereinafter called
"receivers"). The processor shall be in accordance with TA13220E3101 and as
specified herein. The receiver shall be in accordance with TA13220E3151 and
as specified herein.
3.1.1 Major components.
The major components of the PUS shall be as
follows:
a.
Processor, Passive Signal Ultrasonic, TA13220E3101.
b.
Circuit Card Assembly (CCA), Processor, TA13220E3111.
c.
Receiver, Passive Signal Ultrasonic, TA13220E3151.
d.
Circuit Card Assembly, Receiver, TA13220E3163.
When specified (see 6.2), any of the major components listed above shall be
furnished separately.
3.1.2 Drawings. The drawings forming a part of this specification are end
product drawings. No deviation from the prescribed dimensions or tolerances
is permissible without prior approval of the contracting officer. Where
tolerances could cumulatively result in incorrect fits, the contractor shall
provide tolerances within those prescribed on the drawings to ensure correct
fit, assembly and operation of the PUS. Any data (for example, shop drawings,
layouts, flow sheets, processing procedures, etc.) prepared by the contractor
or obtained from a vendor to support fabrication and manufacture of the
production item shall be made available, upon request, for inspection by the
contracting officer or designated representative.
3.2 First article. When specified (see 6.2), a sample shall be subjected
to first article inspection in accordance with 4.2.
3.3 Material. Material shall be as specified herein and on the applicable
drawings. Materials not specified shall be selected by the contractor and
shall be subject to all provisions of this specification.
3.3.1 Material deterioration prevention and control. The PUS shall be
fabricated from compatible materials, inherently corrosion resistant or
treated to provide protection against the various forms of corrosion and
deterioration that may be encountered in any of the applicable operating and
storage environments to which the PUS may be exposed.
3.3.2 Dissimilar metals. Dissimilar metals shall not be used in intimate
contact with each other unless protected against galvanic corrosion.
Dissimilar metals and methods of protection are defined and detailed in
MIL-STD-889.
3.3.3 Recycled, recovered, or environmentally preferable materials.
Recycled, recovered, or environmentally preferable materials should be used to
the maximum extent possible provided that the material meets or exceeds the
operational and maintenance requirements and promotes economically
advantageous life cycle costs. Used, rebuilt or remanufactured components,
pieces and parts shall not be incorporated in the PUS.
3.4 Environmental conditions. The PUS and major components when furnished
separately shall withstand individual environmental conditions specified
herein, or combinations thereof, without damage (see 6.3.3), performance
degradation, or malfunction when tested as specified in 4.4.2.5.
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