Abstract: In some examples, a data processing system can be configured to mount on a vehicle and configured to receive sensor data from a sensor on the vehicle, wherein the sensor data indicates a contamination level of a supply air for the vehicle; receive context data from another system on the vehicle; and generate a recommended maintenance item to be performed on the vehicle based on the sensor data and further based on the context data.

Abstract: A method of measuring a gas concentration is described. The method comprises illuminating, with a light source, a volume of space that includes a gas and measuring, with a detector, a first illumination level of the volume of space. The method further comprises determining, via a processor, a gas concentration in the volume of space based on the measured first illumination level, where the volume of space is configured to be in fluid communication with a gas recirculation flow path including a catalyst, the catalyst configured to substantially remove the gas from the volume of space.

Abstract: This disclosure is directed to methods, computer program products, and systems for calibrating one or more remote sensing devices in an environment. The disclosed technology relates to a calibration device configured to determine measurement data within an environment. The calibration device may transmit the measurement values, or other calibration data items, to a remote sensing device via a wireless link while the remote sensing device stays with a structure in which the remote sensing device is commissioned to operate. In response to receiving the calibration data items, the remote sensing device may adjust one or more settings of the remote sensing device in order to satisfy a calibration threshold.

Abstract: In some examples, a data processing system can be configured to mount on a vehicle and configured to receive sensor data from a sensor on the vehicle, wherein the sensor data indicates a contamination level of a supply air for the vehicle; receive context data from another system on the vehicle; and generate a recommended maintenance item to be performed on the vehicle based on the sensor data and further based on the context data.

Abstract: In some examples, an air treatment system includes a filter, an ozone sensor, and a separator configured to separate air into a nitrogen-enriched gas and an oxygen-enriched gas. The filter is configured to remove ozone from an air stream and supply filtered air to the separator. The ozone sensor is configured to sense an ozone level of the filtered air issuing from the filter prior to encountering the separator. The air treatment system may include processing circuitry configured to monitor the ozone level sensed. The air treatment system may be part of an inerting system configured to supply the nitrogen-enriched gas to an ullage space of a fuel tank.

Abstract: This disclosure is directed to methods, computer program products, and systems for calibrating one or more remote sensing devices in an environment. The disclosed technology relates to a calibration device configured to determine measurement data within an environment. The calibration device may transmit the measurement values, or other calibration data items, to a remote sensing device via a wireless link while the remote sensing device stays with a structure in which the remote sensing device is commissioned to operate. In response to receiving the calibration data items, the remote sensing device may adjust one or more settings of the remote sensing device in order to satisfy a calibration threshold.

Abstract: A method of measuring a gas concentration is described. The method comprises illuminating, with a light source, a volume of space that includes a gas and measuring, with a detector, a first illumination level of the volume of space. The method further comprises determining, via a processor, a gas concentration in the volume of space based on the measured first illumination level, where the volume of space is configured to be in fluid communication with a gas recirculation flow path including a catalyst, the catalyst configured to substantially remove the gas from the volume of space.

Abstract: Provided is a plain bearing including a backing layer, a bearing metal layer, an optional intermediate layer and an overlay. The overlay includes a plurality of sub-layers disposed one on top of the other, which sub-layers include two or more relatively soft sub-layers and one or more relatively hard sub-layer. The soft and hard sub-layers are arranged alternately with respect to one another. Each soft sub-layer includes a metal or metal alloy, and each hard sub-layer includes one or more intermetallic compound. A method of making a coated plain bearing is also provided.

Abstract: Provided is a plain bearing including a backing layer, a bearing metal layer, an optional intermediate layer and an overlay. The overlay includes a plurality of sub-layers disposed one on top of the other, which sub-layers include two or more relatively soft sub-layers and one or more relatively hard sub-layer. The soft and hard sub-layers are arranged alternately with respect to one another. Each soft sub-layer includes a metal or metal alloy, and each hard sub-layer includes one or more intermetallic compound.

Abstract: The invention provides a protection system for a fluid compartment of variable volume. The protection system comprises a detection means for detecting when the volume of the fluid compartment is outside a predetermined acceptable limit. The protection system also comprises a valve arrangement mountable on at least one port that is in selective fluid communication with the fluid compartment. The protection system further comprises an actuator, wherein the detection means is coupled to the valve arrangement via the actuator. When the detection means detects that the volume of the fluid compartment is outside the predetermined limit, the actuator causes the valve arrangement to change state and alters the volume of the fluid compartment. The protection system can be used with a compensator to protect a movable part of the compensator from damage.

Abstract: A door framing system includes a header including a header jamb, first and second legs each including a leg jamb dimensioned to abut against and extend downwards from a respective end of the header jamb, and, for each leg jamb, at least one adjustable connector for establishing a connection between the leg jamb and the header jamb and permitting selective tightening or loosening of the connection.

Abstract: The invention provides a protection system for a fluid compartment of variable volume. The protection system comprises a detection means for detecting when the volume of the fluid compartment is outside a predetermined acceptable limit. The protection system also comprises a valve arrangement mountable on at least one port that is in selective fluid communication with the fluid compartment. The protection system further comprises an actuator, wherein the detection means is coupled to the valve arrangement via the actuator. When the detection means detects that the volume of the fluid compartment is outside the predetermined limit, the actuator causes the valve arrangement to change state and alters the volume of the fluid compartment. The protection system can be used with a compensator to protect a movable part of the compensator from damage.

Abstract: A palisade fence is described comprising support posts and rails extending between the posts, and pales mounted between the rails. The rails define V-shaped apertures for receiving the pales.

Abstract: A doorframe includes a header having a header jamb and a pair of header casings. The header has first and second ends. The doorframe further includes a pair of legs, each having a leg jamb and a pair of leg casings. Each leg jamb has means for connection with the respective end of the header, at least two recessed hinge placements on a first side of the leg jamb and at least two recessed hinge placements on a second side of the first leg jamb. Each of the recessed hinge placements are suitable for receiving a first side of a hinge. A pair of precut striker plate placements and striker holes are provided on one of the leg jambs for receiving a striker of a door when the doorframe is assembled and a door is attached to the recessed hinge placements on the other leg jamb.

Abstract: A palisade fence 10 is described comprising support posts 12 and rails 14, 16 extending between the posts 12, and pales 18 mounted between the rails 14, 16. The rails 14, 16 define V-shaped apertures 28, 30 for receiving the pales 18. The pales 18 are additionally secured to the rails 14, 16 by bolts 40.

Abstract: A doorframe includes a header having a header jamb and a pair of header casings. The header has first and second ends. The doorframe further includes a pair of legs, each having a leg jamb and a pair of leg casings. Each leg jamb has means for connection with the respective end of the header, at least two recessed hinge placements on a first side of the leg jamb and at least two recessed hinge placements on a second side of the first leg jamb. Each of the recessed hinge placements are suitable for receiving a first side of a hinge. A pair of precut striker plate placements and striker holes are provided on one of the leg jambs for receiving a striker of a door when the doorframe is assembled and a door is attached to the recessed hinge placements on the other leg jamb.