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|  MIL-L-48063A(MI)
4.4.1 Spring embrittlement. The spring shall be stretched along its
longitudinal axis, in the case of a coil spring, or bent in the case of a
flat spring, until the spring no longer returns to its original position.
When the spring no longer returns to its original length or profile, it
shall be considered permanently distorted. Any spring that breaks prior to
this point shall be classed defective.
4.4,2 Spring hardness. A flat section of each spring shall be
polished and tested for hardness.
4.4.3 Torque tests.
4.4.3.1 Insert nut torque. The required torque out force shall be
applied between each nut and the skin in the assembly selected.
4.4.3.2 Launcher assembly.
The required assembly torque shall be
applied to each part.
4.4.4 Insulation resistance. Insulation resistance shall be tested
using a megohmmeter, applying 500 50VDC for at least 5 seconds. This test
will be conducted with the intervalometer and shorting pin removed. The
insulation resistance of the power circuits shall be tested from each
receptacle to ground. The insulation resistance of each firing circuit
shall be tested from the intervalometer connector to ground. When any firing
circuit is tested, every other circuit shall be shorted to the grounded
launcher.
4.4.5 Continuity. Continuity of the power and firing circuits shall
be tested using an ohmmeter connected to each end of the circuit under test.
Continuity of each firing circuit shall be tested from the intervalometer
connector to the corresponding contact. Continuity of the ground circuit
shall be tested from each power receptacle to the suspension lug in the
hanger beam. The shorting pin shall be reinserted and continuity to ground
tested from the power pin in the intervalometer connector to the suspension
lug in the hanger beam. Continuity of the grounding circuit shall be
tested from each detent to the ground pin in the intervalometer connector.
4.4.6 Intervalometer electrical tests.
4.4.6.1 Load circuit test.
4.4.6.1.1 The intervalometer shall be set to the load position.
Prior to the application of power, continuity shall be measured from
pin N to each of the output pins using an ohmmeter. Continuity shall
be 0.1 ohms max.
4.4.6.1.2 The intervalometer shall be tested for proper operation of
load circuit with 30.0-0.5 volts DC supplied through a 5.0 1% ohm
25 watt resistor. Upon application of power, the unit shall not sequence.
A dummy load consisting of a 1.0 10% ohm resistor shall reconnected
between each output pin and ground. When power is applied, voltage across
25
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