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| MlLT81821
Fluid lines and tubing shall be mounted on the trainer panels in a
3.2.2.5 Panel plumbing.
manner that will provide a maximum view of individual fluid lines and tubing, and will not obstruct
the view of other components or preclude visual tracing of individual fluid lines and tubing in the
normal classroom situation. All fluid lines and tubing shall be installed in such a manner that they
are parallel to any given edge of the trainer panels and the line bends shall be ninety degrees (90 ).
Extended lines or tubing runs shall be adequately supported to minimize vibration and resonance.
If an electronic trainer panel
3.2.2.6 Antennas, dummy loads, and absorption enclosures.
should require an antenna that is considered too large for installation on the panel, and if little
instructional value would be gained from utilizing the actual antenna, a substitute shall be provided
as space permits. When radiation or R F energy exists, which might interfere with established
warnings or communications systems or be injurious to human safety, dummy loads or
absorption/attenuation enclosures shall be provided to insure human safety. When dummy loads are
other than that specified in the approved support equipment for the system represented they shall
be accurately matched to the equipment and carefully tested by the Contractor to insure that
radiation of RF energy is in accordance with 4.2 through 4.2.1.7 of MlLSTD461. Any substitute
antennas provided in lieu of actual antennas under authority of this paragraph shall be listed as
simulated items in the appropriate trainer descriptions in the Detail Specification.
Each trainer shall be designed and constructed so that
3.2.2.7 Other physical properties.
parts will not work loose in service. T is shall be accomplished by the maximum use of appropriate
locking devices. Trainers shall be built to withstand the strains, jars, vibrations, and other conditions
incident to shipping, storage, installation, and service. Adequate ventilation shall be provided for all
items which generate heat when operating.
Design reliability requirements for trainer peculiar items shall provide the
3.2.3 Reliability.
MTBF factor needed in meeting the availability requirement specified in 3.2.1,7. A formal
reliability demonstration is not required; however, failure to meet the reliability and trainer
availability factors specified herein in service utilization during the applicable warranty period shall
be subject to corrective action under the applicable warranty provisions. Quantitative reliability
requirements will be established by the Procuring Activity for each trainer of a maintenance trainer
set on an individual basis and will be expressed in terms of Mean-Time-Between-Failures (MTBF) or
Mean-Cycles-Between-Failures (MCBF). A cycle is one complete operation of the trainer in
accordance with the operating instructions, regardless of the time required. The Contractor shall be
responsible only for failure of trainer-peculiar items, including trainer-peculiar vendor items. The
Contractor shall not be responsible for failure of unmodified Government-Furnished Equipment
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