MIL-PRF-62364B
4.4.1 Sampling. Frequency of inspection and/or any special arrangements for
establishing the frequency of inspection shall be as specified in the contract or purchase order
(see 6.2).
4.4.2 Acceptance tests. Unless otherwise specified (see 6.2), each brake assembly shall
be subjected to the examinations specified in table II and the conformance tests specified in
table III.
4.5 Methods of inspection. Except where otherwise specified herein, all tests shall be
conducted with input voltages as specified in 3.4.1.
4.5.1 Materials. Conformance to 3.2 through 3.3 shall be determined by inspection of
contractor records providing proof or certification that materials conform to requirements.
Applicable records shall include drawings, specifications, design data, receiving inspection
records, processing and quality control standards, vendor catalogs and certifications, industry
standards, test reports, and rating data.
4.5.2 Defects. Conformance to 3.3 and 3.6 shall be determined by examination for the
defects listed in table II. Examination shall be visual, tactile, or by measurement with SIE.
4.5.3 Performance.
4.5.3.1 Voltage transient. The brake assembly shall be able to withstand transient
voltages permitted by MIL-STD-1275 for fault-free, battery only, and single fault conditions in
the operating and non-operating conditions (see 3.4.2).
4.5.3.2 Fixture tests. The tests described below shall be conducted in a test fixture that
will simulate the actual operating environment of the brake system. The test setup shall include an
appropriately configured motor shaft with integral specified inertial loads (see table I), a variable
speed drive, electrical power, and control for the electromagnetic brake, and instrumentation to
measure speed, torque, and time (see 3.4.3).
4.5.3.2.1 Static torque. To determine conformance to 3.4.3.1, use torque measuring
equipment to determine static torque values. Peak torque values, measured at the initiation of
shaft motion shall be used. The frictional torque resistance will decrease once shaft rotation has
begun.
4.5.3.2.2 Sliding torque. To determine conformance to 3.4.3.2, engage the brake and
apply increasing torque to the motor shaft. The shaft shall begin to rotate at the measured torque
values in 4.5.3.2.1. The shaft shall continue to rotate slowly through 15 to 30 complete
revolutions at applied torque not greater than the specified torque. Motion shall be smooth and
continuous.
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