MIL-PRF-62364B
convection and conduction, and shall be capable of operating in any position. The brake assembly
shall be designed in such a manner that the adjustment of torque requirements can be
accomplished at the factory or depot repair level (see 4.5.1 and 4.5.2).
3.4 Performance.
3.4.1 Voltage. The brake assembly shall function and meet the requirements of this
specification with an input voltage of 18 to 30 volts (V) direct current (dc) (see 4.5).
3.4.2 Voltage transient. The brake assembly, in operating and non-operating conditions,
shall be capable of withstanding the transient voltages permitted by MIL-STD-1275 for fault-free,
battery only, and single fault conditions (see 4.5.3.1).
3.4.3 Braking torque.
3.4.3.1 Static torque. The brake shall apply static friction to resist motion of the brake
shaft when it is under torsional load. The friction level shall be set so that incipient creep shall
occur when the shaft is torqued as follows (see 4.5.3.2.1):
Part number M62364-1: 55 inch pounds (in.-lb) [6.2 Newton meters (N-m)]
+10 percent
Part number M62364-2: 85 in.-lb (9.6 N-m) +10 percent
3.4.3.2 Sliding torque. When the torque applied to a braked stationary shaft is increased
to the specified static torque value, the brake shall begin to slip, and the shaft shall begin to rotate
smoothly. Torque shall not exceed the specified static torque while the shaft is rotated through
15 to 30 revolutions (see 4.5.3.2.2).
3.4.3.3 Dynamic torque. When an initial coasting speed and inertial load are as specified
in table I, the de-energized brake shall bring a rotating shaft to a complete stop within the time
specified in table I (see 4.5.3.2.3).
TABLE I. Stopping time.
Inertia
Initial speed
2
Part
pound-inch-second
revolutions per
Stopping time
(Netwon-meter-second2)
number
minute (rpm)
seconds (s)
M62364-1
0.0145 (0.0016)
6242
0.40
M62364-2
0.0387 (0.0043)
1892
0.25
4
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