Abstract: A combustion system for a vehicle having an engine includes a hydrogen fuel system having a fuel source providing a hydrogen fuel, a combustor operable to combust the hydrogen fuel to generate combustion gases, and a fuel delivery assembly operable to deliver the hydrogen fuel from the fuel source to the combustor. A first control system has a first update rate and is operable to control one or more operational aspects of the turbine engine. A second control system is in communication with the first control system and the hydrogen fuel system and has a second update rate faster than the first update rate. The second control system is operable to monitor at least one parameter associated with the hydrogen fuel system and output at least one control signal to the hydrogen fuel system to control the delivery or the combustion of the hydrogen fuel.

Abstract: A method for providing information sharing among user devices for improving recreationalist safety through networking of user devices includes communicating device location based on an activity status identifier and the location of the devices.

Abstract: A toilet seat cover includes a support layer including slits for attaching the support layer to a toilet seat. A sanitary layer is coupled to the support layer and is configured as a barrier between a user and the toilet seat.

Abstract: Communication circuitry, comprising: N communication nodes being clock-candidate nodes, where N?2; N communication units for communication using respective communication protocols, and connected or connectable to receive respective clock signals for communication under their respective communication protocols via respective said clock-candidate nodes; and a control unit configured, in a decision operation, to monitor the clock-candidate nodes and decide which of the communication protocols is in use dependent on at which of the clock-candidate nodes a received clock signal is detected, wherein at least one said communication unit is connected or connectable to receive and/or transmit data under its respective communication protocol via at least one said clock-candidate node other than the clock-candidate node via which that communication unit is to receive its respective clock signal.

Abstract: A vortex generator arrangement for an aircraft, a flow control system and an aircraft comprising such vortex generator arrangement. The arrangement includes a surface portion facing a first region of space to constitute a flow surface, a vortex generating element, an element support structure connected to the element, a mounting structure. The element support structure and the element together are rotatable between first and second positions and a biasing device, retainer and release are provided. The rotational axis extends transversely with respect to the surface portion. The projection of the element onto a projection plane is smaller in the first rotational position than in the second rotational position, the projection plane extending perpendicularly to a tangent plane of the surface portion at a reference point of the surface portion and to a predetermined direction parallel to the extension of the tangent plane.

Abstract: Communication circuitry, comprising: N communication nodes being clock-candidate nodes, where N?2; N communication units for communication using respective communication protocols, and connected or connectable to receive respective clock signals for communication under their respective communication protocols via respective said clock-candidate nodes; and a control unit configured, in a decision operation, to monitor the clock-candidate nodes and decide which of the communication protocols is in use dependent on at which of the clock-candidate nodes a received clock signal is detected, wherein at least one said communication unit is connected or connectable to receive and/or transmit data under its respective communication protocol via at least one said clock-candidate node other than the clock-candidate node via which that communication unit is to receive its respective clock signal.

Abstract: A vortex generator arrangement for an aircraft comprising a surface section forming a flow surface interacting with a flow surrounding the aircraft in operation, wherein the surface section comprises an opening, a vortex generator movable between a retracted position and an extended position, a retainer for holding the vortex generator in the retracted position, a biasing structure for biasing the vortex generator towards the extended position and a release for releasing the vortex generator from the retainer such that the vortex generator can be moved towards the extended position. Further, a sealing membrane is provided completely sealing the opening when the vortex generator is in the retracted position. The vortex generator is movable through the membrane from the retracted position to the extended position. Furthermore, a flow control system, an aircraft and a method of controlling flow are described and claimed.

Abstract: A vortex generator arrangement for an aircraft including a surface section, a flap element pivotable between a first position and a second position, a biasing arrangement biasing the flap element towards the second position, retaining devices retaining the flap element in the first or second position, and a release device releasing the flap element from the first retaining device. The biasing arrangement, the first retaining device and the second retaining device are configured such that the second retaining device automatically retains the flap element in the second position after the flap element has been pivoted by the biasing arrangement from the first position into the second position. As soon as the torque exceeds a predetermined value, the second retaining device automatically releases the flap element, which pivots against the force of the biasing arrangement into the first position and is automatically retained therein by the first retaining device.

Abstract: A vortex generator arrangement for an aircraft, a flow control system and an aircraft comprising such vortex generator arrangement. The arrangement includes a surface portion facing a first region of space to constitute a flow surface, a vortex generating element, an element support structure connected to the element, a mounting structure. The element support structure and the element together are rotatable between first and second positions and a biasing device, retainer and release are provided. The rotational axis extends transversely with respect to the surface portion. The projection of the element onto a projection plane is smaller in the first rotational position than in the second rotational position, the projection plane extending perpendicularly to a tangent plane of the surface portion at a reference point of the surface portion and to a predetermined direction parallel to the extension of the tangent plane.

Abstract: A vortex generator arrangement for an aircraft comprising a surface section forming a flow surface interacting with a flow surrounding the aircraft in operation, wherein the surface section comprises an opening, a vortex generator movable between a retracted position and an extended position, a retainer for holding the vortex generator in the retracted position, a biasing structure for biasing the vortex generator towards the extended position and a release for releasing the vortex generator from the retainer such that the vortex generator can be moved towards the extended position. Further, a sealing membrane is provided completely sealing the opening when the vortex generator is in the retracted position. The vortex generator is movable through the membrane from the retracted position to the extended position. Furthermore, a flow control system, an aircraft and a method of controlling flow are described and claimed.

Abstract: A vortex generator arrangement for an aircraft including a surface section, a flap element pivotable between a first position and a second position, a biasing arrangement biasing the flap element towards the second position, retaining devices retaining the flap element in the first or second position, and a release device releasing the flap element from the first retaining device. The biasing arrangement, the first retaining device and the second retaining device are configured such that the second retaining device automatically retains the flap element in the second position after the flap element has been pivoted by the biasing arrangement from the first position into the second position. As soon as the torque exceeds a predetermined value, the second retaining device automatically releases the flap element, which pivots against the force of the biasing arrangement into the first position and is automatically retained therein by the first retaining device.

Abstract: An approach is provided in a fake check-in event is received at a software application corresponding to a user of the software application. Fake check-ins are initiated on behalf of the user in response to the fake check-in event. The software application posts a set of fake check-in entries on behalf of the user while the user is away. The posted fake check-ins are visible by other users of the software application and are used to obfuscate others that the user is out-of-town. In one embodiment, check-in entries that are received from the user after fake check-ins have been initiated are cached. In this embodiment, a local check-in event is received when the user is within the user's geographical local area and the cached check-in entries are posted so that they are now visible by the other users of the software application.

Abstract: An approach is provided in a fake check-in event is received at a software application corresponding to a user of the software application. Fake check-ins are initiated on behalf of the user in response to the fake check-in event. The software application posts a set of fake check-in entries on behalf of the user while the user is away. The posted fake check-ins are visible by other users of the software application and are used to obfuscate others that the user is out-of-town. In one embodiment, check-in entries that are received from the user after fake check-ins have been initiated are cached. In this embodiment, a local check-in event is received when the user is within the user's geographical local area and the cached check-in entries are posted so that they are now visible by the other users of the software application.

Abstract: An approach is provided in a fake check-in event is received at a software application corresponding to a user of the software application. Fake check-ins are initiated on behalf of the user in response to the fake check-in event. The software application posts a set of fake check-in entries on behalf of the user while the user is away. The posted fake check-ins are visible by other users of the software application and are used to obfuscate others that the user is out-of-town. In one embodiment, check-in entries that are received from the user after fake check-ins have been initiated are cached. In this embodiment, a local check-in event is received when the user is within the user's geographical local area and the cached check-in entries are posted so that they are now visible by the other users of the software application.

Abstract: An approach is provided in a fake check-in event is received at a software application corresponding to a user of the software application. Fake check-ins are initiated on behalf of the user in response to the fake check-in event. The software application posts a set of fake check-in entries on behalf of the user while the user is away. The posted fake check-ins are visible by other users of the software application and are used to obfuscate others that the user is out-of-town. In one embodiment, check-in entries that are received from the user after fake check-ins have been initiated are cached. In this embodiment, a local check-in event is received when the user is within the user's geographical local area and the cached check-in entries are posted so that they are now visible by the other users of the software application.

Abstract: An approach is provided in a fake check-in event is received at a software application corresponding to a user of the software application. Fake check-ins are initiated on behalf of the user in response to the fake check-in event. The software application posts a set of fake check-in entries on behalf of the user while the user is away. The posted fake check-ins are visible by other users of the software application and are used to obfuscate others that the user is out-of-town. In one embodiment, check-in entries that are received from the user after fake check-ins have been initiated are cached. In this embodiment, a local check-in event is received when the user is within the user's geographical local area and the cached check-in entries are posted so that they are now visible by the other users of the software application.

Abstract: The invention relates to a medical pump device comprising a rotary valve (13) having preferably only one rectilinear channel (20) which respectively connects the inlet (4) and the outlet (7) of the pump device, or connects the inlet to a pump chamber (15), or said pump chamber to the outlet, upon rotation of the rotary element (19) of the valve. The invention enables a medical pump device to be especially easily produced, said pump device being preferably inserted between an infusion syringe driver or an infusion container and a catheter, and being used to supply small quantities of liquid in an accurately dosed manner.

Abstract: A method for maintaining the rotational speed of a crankshaft of an internal combustion engine having a plurality of cylinders each having a spark plug wherein a predetermined amount of delivered fuel is to be combusted at a firing time within each of the plurality of cylinders with each rotation of the camshaft or crankshaft includes the step of operating the internal combustion engine, measuring the rotational speed of the crankshaft, defining an expected engine speed, calculating a speed error as the rotational speed of the crankshaft less the expected engine speed, and changing the predetermined amount of delivered fuel to be combusted in each of the plurality of cylinders to reduce the speed error. The preferred embodiment is implemented in fuzzy logic.