MIL-DTL-83538 Connectors And Accessories, Electrical, Circular, Umbilical, Environment Resistant, Removable Crimp Contacts For Mil-Std-1760 Applications \(Metric\), General Specification ForThis specification covers connectors and accessories, electrical, circular, umbilical. The connector assembly provides the necessary connections required to meet MIL-STD-1760, class I electrical interface between stores and their associated launchers using a "blind mating" mechanism. The connector assembly consists of a receptacle installed on the launcher, a receptacle installed on the store, and a buffer plug installed between the two receptacles. This specification also includes the required mounting adapters and nut, accessory adapter, cable bushing, and protective covers \(see 6.1 for details on intended use and application\). The connectors covered by this specification are intended for use with launcher mechanisms with an applied holding force in the range 271 Newtons \(61 lbs\) to 427 Newton \(96 lbs\).

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MIL-DTL-83538D

4.5.2.1.1 Twelve-month periodic test. The following tests shall be performed as follows:

a. On two mating sets of the combined launcher receptacle, buffer plug and the store receptacle in

regular production during that period - humidity in accordance with 4.6.20.

b. On two mating sets of the combined launcher receptacle, buffer plug and store receptacle - high

temperature exposure with contact loading in accordance with 4.6.30.1, except that the time

period shall be 250 hours.

c. On two mating sets of the combined launcher receptacle, buffer plug and store receptacle, each

set being subjected to each of the specified fluids (see table X). Fluid immersion shall be in

accordance with 4.6.26 except that the fluids shall be:

TABLE X. Test fluids.

Sample number

Test fluid (test procedure EIA-364-10)

d. On one launcher receptacle, buffer plug and store receptacle conduct the salt spray test of 4.6.10.

e. One mated set of launcher receptacle, buffer plug and store receptacle shall be subjected to the

coupling test.

4.5.2.1.2 Twenty-four month periodic tests. Every 24 months, mating connector sample units shall be

selected and tested in accordance with the following:

a. Three mating sets of the combined launcher receptacle, buffer plug and store receptacle shall be

provided. One set shall be fully wired with the applicable wire listed in maximum diameter column

in table IV and subjected to the applicable tests in table VI, group 1. The remaining sample sets

shall be fully wired with the applicable wire listed in minimum diameter column in table IV and

subjected to the applicable tests in table VI, group 2.

b. On one launcher receptacle, buffer plug and store receptacle conduct the salt spray test of 4.6.10.

4.5.2.1.3 Failures. If one or more sample units fail to pass group C inspection, the sample shall be

considered to have failed.