Abstract: A moisture monitoring system includes a control in communication with a sensor system to determine moisture data from a moisture level in a composite material structure.

Abstract: A seal assembly (80) adaptable for use between swivel ducts (36, 38, 40) or between a swivel duct (36) and an exhaust duct (81), has a seal (84), a seal carrier (82) and a spring (98). The spring is maintained between the seal carrier and the seal by means of a seal carrier spring holder (88) and a seal retention holder (96) such that the spring urges the seal away from the seal carrier to land the seal on an adjacent swivel duct (40).

Abstract: An apparatus for measuring the dynamic imbalance in a bearing ball (10) includes a support member (32) having a concave surface (34) for receiving and positionally retaining the ball (10). A cushion of compressed gas is established between the concave surface (34) and the ball (10) by a plurality of flow passages (36) disposed in the support member (32). Rotating motion is imparted to the ball (10) by an intermittent gas jet (46) and the subsequent motion (28) of the axis of rotation (22) resulting from the presence of any dynamic imbalance within the sphere (10) is measured (68, 70, 72).