Abstract: Apparatuses, systems, and methods comprising acoustically absorptive air ducts comprising an internally positioned structure component as an endoskeleton and an air impervious inner layer, and an acoustically absorptive foam outer layer, environmental control systems comprising such air ducts, and vehicles incorporating such environmental control systems are disclosed with methods for manufacture and installations are disclosed.

Abstract: Disclosed are systems and methods for testing aircraft engine that are not currently associated with a functional aircraft or systems. For testing, systems on the engine being tested are connected with the reciprocating systems (e.g., engine electronic controls, main and motive fuel) on a fully functional aircraft using conduits that have been extended to lengths enabling the connection.

Abstract: A hat mount configured to attached to a dashboard withing an interior compartment of a vehicle is presented. The hat mount includes a first surface configured for support of a hat. The hat mount having a planar second surface. The second surface is configured for engagement with a dashboard. The second surface includes a silicone material configured to resist and/or prevent sliding of the hat mount relative to the dashboard. The second surface is configured to withstand high temperatures to resist and/or prevent melting of the second surface during hot weather and ruining the dashboard. The second surface avoids the need to use damaging adhesives or glue.

Abstract: Disclosed are systems and methods for testing aircraft engine that are not currently associated with a functional aircraft or systems. For testing, systems on the engine being tested are connected with the reciprocating systems (e.g., engine electronic controls, main and motive fuel) on a fully functional aircraft using conduits that have been extended to lengths enabling the connection.

Abstract: Disclosed are systems and methods for testing aircraft engine that are not currently associated with a functional aircraft or systems. For testing, systems on the engine being tested are connected with the reciprocating systems (e.g., engine electronic controls, main and motive fuel) on a fully functional aircraft using conduits that have been extended to lengths enabling the connection.

Abstract: Disclosed are systems and methods for testing aircraft engine that are not currently associated with a functional aircraft or systems. For testing, systems on the engine being tested are connected with the reciprocating systems (e.g., engine electronic controls, main and motive fuel) on a fully functional aircraft using conduits that have been extended to lengths enabling the connection.

Abstract: A method for configuring and operating a radio system employing the ZigBee radio standard is described. The method advantageously enables a group of radio devices which are logically linked to another radio device to respond with low latency to a message. The method comprises a group identifier being generated and issued to logically linked devices, details of which are provided in a pre-installed binding table. In operation, a radio message from a device which is logically linked to another is received by a device coordinator which then broadcasts (100) the message with the generated group identifier. Only those devices which have previously received a matching group identifier (140) respond (150) to the broadcast message. Since broadcasts are not acknowledged, a rapid system response is achieved. This is important in lighting applications where a user expects instantaneous operation of lamps at the flick of a logically linked radio light switch.

Abstract: A radio communication system (20) is described having a primary-secondary star-like topology, and wherein further secondary stations/devices (24) located outside of the radio coverage area (13) of the primary station are enabled to communicate with the primary station (12) via a first secondary station (22) located within the coverage area of the primary station (12). This is achieved by the first secondary station (22) registering the further secondary station(s) with both itself and the primary station (12), following which messages are exchanged between the primary station and the further secondary station(s) via the first secondary station according to translation of identity codes allocated at the time of registration.