Abstract: A bladed rotor system includes first and second sets of blades with respective airfoils each having at least one internal cavity. The airfoils of both the first and second sets of blades have identical outer shapes defined by an outer surface of an outer wall of the respective airfoils. The airfoils of the first set of blades are distinguished from the airfoils of the second set of blades by a geometry and/or position of at the least one internal cavity, which is unique to blades of a given set. The natural frequency of a blade of the first set differs from the natural frequency of a blade of the second set by a predetermined amount. The blades of the first set and the second set are alternately arranged in a periodic fashion in said circumferential row, to provide a frequency mistuning to stabilize flutter of the blades.

Abstract: Providing software-as-a-service to a plurality of clients includes: visually rendering a first virtual portal and a set of portal resources according to a portal-resource association specified in a resource association matrix; identifying a set of server resources accessible from a portal server, the set of server resources excluding the set of portal resources; determining a score for a first resource of the set of server resources; visually rendering the first resource; and associating the first resource with the first virtual portal in the resource association matrix by adding an identifier of the scored resource.

Abstract: An adjustable damping valve device for a vibration damper, includes a main stage valve which is controlled by a pre-stage valve with a pre-stage valve body, which pre-stage valve can be actuated by an electromagnetic actuator, wherein an emergency operation valve controls the main stage valve during emergency operation, wherein an emergency operation armature is preloaded on the pre-stage valve body of the pre-stage valve by an emergency operation spring so that the pre-stage valve forms the emergency operation valve.

Abstract: An adjustable vibration damper includes at least one adjustable damping valve, with a piston at a piston rod that divides a cylinder into a work chamber on the piston rod side and a work chamber on the side remote of the piston rod. The cylinder is at least partially enclosed by an intermediate tube that forms a fluid connection between one of the work chambers and the adjustable damping valve. A hydraulic apparatus is connected to the fluid connection of the one work chamber via a first line and to the other work chamber via a second line.

Abstract: An adjustable vibration damper comprises at least one adjustable damping valve for each working direction. A fluid connection between a compensation space and a working space is controlled by a check valve which has a check valve body and which is hydraulically connected in parallel with the adjustable damping valve. The check valve is held by an intermediate tube which forms the fluid connection and which has a connection orifice to the connected adjustable damping valve. The check valve body of the check valve is supported at least indirectly in the region of the connection orifice.

Abstract: Granting an aligned secured access to a resource for a client system. A first authentication token and a first validity time period value are received from a first server. The first authentication token includes an authorization for accessing the system resource and the predefined session time. The first authentication token including the predefined session time is sent from the client system to a second server. A second validity period value of a second validity period of a second authentication token for a service provided by the second server to the client system is set equal to the received predefined session time. The second authentication token for the second validity period is sent from the second server to the client system such that an aligned secured access is granted for the client system to the resource.

Abstract: A power electronic switching device having plurality of potential surfaces. At least two different potentials are respectively assigned to at least one of the potential surfaces. A plurality of semiconductor components are arranged in an n×m matrix, oriented in the x-y-direction, on a first conductor track, formed by at least one potential surface of the first potential. The semiconductor components are connected in parallel with one another and form a current valve. In this case, the semiconductor components can be distributed among a plurality of potential surfaces of the first potential which form the first conductor track.

Abstract: An air inlet device for a cooling device of an electric vehicle, having an air inlet duct with a duct wall delimiting a duct volume and at least one duct opening for the admission of ambient air for guiding to the cooling device. An acoustic device for pedestrian protection is arranged in the duct wall in a flow-neutral manner with respect to the flow of ambient air, with a speaker device for generating a protective noise.

Abstract: A method for profiling a turbine rotor blade for an axial flow machine, having the following steps: providing a geometric model of a blade profile, having a camber line of a profile section of the turbine rotor blade; determining boundary conditions for a flow flowing around the turbine rotor blade; changing the camber line such that the flow which is adjusted by the boundary conditions produces the maximum of the difference of the isentropic mach number between the pressure side and the suction side of the turbine rotor blade in a blade section which extends from the blade trailing edge in the direction towards the blade leading edge and the length of which is 65% of the length S of the blade chord.

Abstract: Vibration damper (1) with an external housing (9) includes an outer cylinder (3) with a main axis. The housing (9) having two receiving spaces (13, 15) is arranged on an outer lateral surface of the outer cylinder (3). Each receiving space (13, 15) has a main axis. The main axis of the outer cylinder (3) and the main axes of the receiving spaces (13, 15) are arranged so as to be skew with respect to one another.

Abstract: The present invention relates generally to a process for producing glass products and to an apparatus suitable for the purpose. In the process, a melting apparatus is provided with a melting tank for producing a glass melt from glass raw materials and a top furnace. Part of the surface of the melting region of the melting apparatus is covered with the glass raw materials and at least a small portion of the surface of the melting region is uncovered. In addition, energy is introduced in such a way that a vertical temperature difference can be established, such that the temperature of the glass melt at the base is greater than the temperature of the atmosphere in the top furnace.

Abstract: Providing software-as-a-service to a plurality of clients includes: visually rendering a first virtual portal and a set of portal resources according to a portal-resource association specified in a resource association matrix; identifying a set of server resources accessible from a portal server, the set of server resources excluding the set of portal resources; determining a score for a first resource of the set of server resources; visually rendering the first resource; and associating the first resource with the first virtual portal in the resource association matrix by adding an identifier of the scored resource

Abstract: An adjustable damping valve device has a first adjustable damping valve assembly for a first flow direction and a second adjustable damping valve assembly for a second flow direction. The two damping valve assemblies are adjustable independently from one another, and the first damping valve assembly generates a damping force for only one flow direction and the second damping valve assembly has a minimum cross section through which damping medium can flow in the setting for maximum damping force so that the second damping valve device generates a damping force in both flow directions.

Abstract: A damping valve device includes an actuator which carries out an axial displacing movement on a sliding sleeve. The sliding sleeve, along with a fixed valve carrier, forms a slide valve which has two flow directions. The slide sleeve is impinged with damping medium on a front side and on a rear side in an incident flow direction, and the front side of the slide sleeve and rear side of the slide sleeve are impinged hydraulically in parallel by damping medium during the incident flow.

Abstract: A method for profiling blades of an axial turbomachine includes preparing a geometric model of a blade profile; determining an oscillation mode of the geometric model; calculating a time profile of a position-dependent disruptive pressure in a channel between two adjacent blade profiles over an oscillation period of the oscillation belonging to the oscillation mode, changing the geometric model and determining a different oscillation mode for the modified geometric model; and determining the damping of the oscillation using the disruptive pressure profile calculated previously and accepting the modified geometric model for the case that the damping of the oscillation turns out to be greater than calculated, otherwise repeating the last two steps with another modified geometric model.

Abstract: Providing software-as-a-service to a plurality of clients includes: selecting a first virtual portal, determining a score for a first resource to generate a first scored resource, determining a set of scored resources, visually rendering the first virtual portal and the set of portal resources, visually rendering the set of scored resources, and selecting a scored resource from the set of scored resources to be associated with the first virtual portal by updating the resource association matrix with an identifier of the scored resource. The score is selected to represent a usefulness factor of the first resource. Each scored resource of the set of scored resources is selected to be different than each portal resource of a set of portal resources associated with the first virtual portal by a resource association matrix.

Abstract: An air inlet device for a coding device of an electric vehicle, having an air inlet duct with a duct wall delimiting a duct volume and at least one duct opening for the admission of ambient air for guiding to the cooling device. An acoustic, device for pedestrian protection is arranged in the duct wall in a flow-neutral manner with respect to the flow of ambient air, with a speaker device for generating a protective noise.

Abstract: The invention relates to an air conditioning device for a motor vehicle, comprising, arranged in a housing (10), a first heat exchanger (21), through which an air flow (14) can flow and which can be operated as an evaporator of a refrigerant circuit, a second heat exchanger (20, 22) connected downstream of the first heat exchanger in the flow direction of the air flow (14), through which the air flow (14) can flow, and which is provided with a resistance heating element, and further comprising an air guiding flap (30) designed as a bypass flap, by way of which, depending on their position, parts of the air flow (14) can be guided past the second heat exchanger (20, 22).

Abstract: An adjustable vibration damper comprises at least one adjustable damping valve for each working direction. A fluid connection between a compensation space and a working space is controlled by a check valve which has a check valve body and which is hydraulically connected in parallel with the adjustable damping valve. The check valve is held by an intermediate tube which forms the fluid connection and which has a connection orifice to the connected adjustable damping valve. The check valve body of the check valve is supported at least indirectly in the region of the connection orifice.

Abstract: An air-conditioning system for a vehicle, comprising a refrigerant circuit through which a refrigerant can flow and which is configured as a heat pump circuit and as a cooling system circuit, and associated with these, a compressor, at least one external heat exchanger, at least one internal heat exchanger that is associated with an internal heating condenser, whereby a device is provided for generating an air stream that can be thermally coupled to the internal heat exchanger and to the internal heating condenser, as well as a metering device that can meter the flow of at least a partial stream of the thermally coupled air stream through the internal heating condenser is provided, wherein in the heat pump mode of operation, the refrigerant can be or is conveyed from the high-pressure side of the compressor into the internal heating condenser, can be or is conveyed from the internal heating condenser via a first expansion valve to the internal heat exchanger, can be or is conveyed from the internal heat ex