Abstract: A liquid level sensing system includes a vessel and an electrode. The vessel includes a vessel wall separating a vessel interior from a vessel exterior. The electrode is mounted to an exterior side of the vessel wall spanning a distance corresponding to a desired-level-determining range. The vessel wall is a dielectric gap between the electrode and the vessel interior. The electrode is configured to collect a charge corresponding to a liquid level. A method for determining a liquid level in a vessel includes collecting a charge on an electrode, sensing the collected charge on the electrode with a capacitance sensor through an electrical line, and determining a liquid level in a vessel based on the collected charge sensed by the capacitance sensor.

Abstract: An aircraft potable-water system (10) comprising an automatic valve (60) associated with an overflow line (50) and an automatic switch (70) associated with the storage tank (30). The switch (70) vents the storage tank (30) when it is not full, and automatically converts to a tank-pressurizing condition when the storage tank (30) is full. This conversion of the switch (70) causes the valve (60) to move to an overflow-open position so that excess potable water can be drained through the drainmast (18).

Abstract: A liquid level sensing system includes a vessel and an electrode. The vessel includes a vessel wall separating a vessel interior from a vessel exterior. The electrode is mounted to an exterior side of the vessel wall spanning a distance corresponding to a desired-level-determining range. The vessel wall is a dielectric gap between the electrode and the vessel interior. The electrode is configured to collect a charge corresponding to a liquid level. A method for determining a liquid level in a vessel includes collecting a charge on an electrode, sensing the collected charge on the electrode with a capacitance sensor through an electrical line, and determining a liquid level in a vessel based on the collected charge sensed by the capacitance sensor.

Abstract: An aircraft potable water system (20) comprises outlet facilities (30) and a recirculation path (40) that supplies potable water thereto. The system (20) can operate in a high-usage condition whereat recirculation through path (40) is temporarily interrupted, thereby permitting supply water pressure to remain relatively high despite water being quickly tapped therefrom.

Abstract: An aircraft (10) having a cabin (14) with a plurality of potable-water-using stations (22) that drain graywater to a transfer tank (24). The graywater ejection system pressurizes the transfer tank (24) at appropriate times and/or places, so that graywater can be ejected through a drainmast (26) without the help of gravity. This graywater ejection system eliminates the need for a discharge line from the transfer tank (24) and frees the aircraft's fuselage (12) from having an inconvenient port associated with such a discharge line.

Abstract: An aircraft potable-water system (10) comprising an automatic valve (60) associated with an overflow line (50) and an automatic switch (70) associated with the storage tank (30). The switch (70) vents the storage tank (30) when it is not full, and automatically converts to a tank-pressurizing condition when the storage tank (30) is full. This conversion of the switch (70) causes the valve (60) to move to an overflow-open position so that excess potable water can be drained through the drainmast (18).

Abstract: An aircraft (10) having a cabin (14) with a plurality of potable-water-using stations (22) that drain graywater to a transfer tank (24). The graywater ejection system pressurizes the transfer tank (24) at appropriate times and/or places, so that graywater can be ejected through a drainmast (26) without the help of gravity. This graywater ejection system eliminates the need for a discharge line from the transfer tank (24) and frees the aircraft's fuselage (12) from having an inconvenient port associated with such a discharge line.

Abstract: A generator comprising a generator housing and a generator drive shaft including a power input shaft coupled to a drive member through a coupling arrangement, whereby in use the drive member is coupled to an output shaft of an associated engine. The coupling arrangement is arranged within the generator housing and comprises first and second coupling members and an insulator member interposed between the first and second coupling members. The coupling arrangement is configured such that the input shaft is electrically insulated from the drive member and, hence, from the engine output shaft, in use.

Abstract: A generator comprising a generator housing and a generator drive shaft including a power input shaft coupled to a drive member through a coupling arrangement, whereby in use the drive member is coupled to an output shaft of an associated engine. The coupling arrangement is arranged within the generator housing and comprises first and second coupling members and an insulator member interposed between the first and second coupling members. The coupling arrangement is configured such that the input shaft is electrically insulated from the drive member and, hence, from the engine output shaft, in use.