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A switchgear may be a simple open-air isolator switch or it may be insulated by some other substance. An effective although more costly form of switchgear is the gas-insulated switchgear (GIS), where the conductors and contacts are insulated by pressurized sulfur hexafluoride gas (SF 6). Other common types are oil or vacuum insulated switchgear.
Dock connector on a 2011's HP EliteBook laptop. A dock connector is an electrical connector used to attach a mobile device simultaneously to multiple external resources. Dock connectors typically carry a variety of signals and power, through a single connector, to simplify the process of docking the device.
Docking station: The actual station or cradle in which the mobile PC rests. These stations may come equipped with additional functionality, such as charging and USB ports. Motion attachments: Movable components of a mounting system that attach between the pole or tube and the mount base. These come in a number of varieties, allowing the user to ...
A standardized Berthing Mechanism was perceived as an external flange on module ports, and a "6-port Multiple Berthing Adapter" roughly corresponded to the eventual Resource Node concept. Deflections induced by internal pressure acting on radially-oriented ports of cylindrical modules became recognized as a critical developmental issue. [ 67 ]
The international Low Impact Docking System (iLIDS) [1] was the precursor to the NDS. NDS Block 1 was designed, built, and tested by The Boeing Company in Huntsville Alabama. Design qualification testing took place through January 2017. Using NDS, NASA developed the International Docking Adapter (IDA) to provide two IDSS-compliant docking ports ...
During a docking maneuver, one vehicle assumes the "active" role and the other vehicle assumes the "passive" role. A particular IDSS port can be manufactured to be able to act in the active role, the passive role, or either role. If a port (e.g., the ones on the ISS) is passive-only, then the other spacecraft must implement the active role.
Pressure angles. Pressure angle in relation to gear teeth, also known as the angle of obliquity, [1] is the angle between the tooth face and the gear wheel tangent. It is more precisely the angle at a pitch point between the line of pressure (which is normal to the tooth surface) and the plane tangent to the pitch surface.
Illustration of a simple planetary gear train, with the sun gear in yellow, the planets in blue, and the carrier in green. The ring gear is not shown. In contrast to a Ravigneaux, a simple planetary gear train has two concentric gears, one or more planets bridging the gap between those gears, and one arm carrying the planets. [4]