scope:

Abstract:

Thousands of electrical connectors are used on the Space Shuttle Orbiter to allow quick connection and disconnection of electrical circuits for maintenance, modification, inspection, or troubleshooting. NLS connectors (NLS is the prefix to the connector part number) are a frequently used type, are procured according to 40M38277 [Marshall Space Flight Center (MSFC) specification], and are similar in construction to MIL-C-38999, Series II, connectors. NLS connectors are commonly referred to as high-density connectors because of their generally high number of small contacts per connector (up to 128 size 22D contacts in a single connector). From a design perspective, 128-pin NLS connectors offer space and weight advantages but are challenging from a vehicle-processing perspective. Pictures of the front and back of an NLS connector are attached. The front view shows a bent pin. The back view shows the density of the wiring attached to the connector.