Abstract: Methods and apparatuses for dropping a hockey puck (collectively the “system”). The system can facilitate or simulate hockey face-offs. Various embodiments of the system can be configured to provide convenience, portability, stability, and/or consistency for dropping a hockey puck to facilitate a hockey face-off. A frame can support a puck housing and a feed mechanism. The feed mechanism may be configured to feed the hockey puck from the puck housing to a feed chute. A release mechanism can receive the hockey puck from the feed chute. The release mechanism may be configured to release the hockey puck according to a predefined release rate. A power source can be carried by the frame and be configured to power the feed and the release of the hockey puck.

Abstract: In accordance with the principles of the invention, an automatic shut-off valve is provided for use with a fluid utilization device. The valve automatically cuts off water to the utilization device should the utilization device develop a leak. In an illustrative embodiment of the invention, the valve includes a valve assembly having a valve body, an inlet port, an outlet port, and a valve member movable between first and second positions, and an element biasing the valve member to the second position. An actuator is coupled to the valve. The actuator comprises a fluid responsive member coupled to the element to maintain the valve member in the first position in the absence of fluid. The fluid responsive member becomes weakened in the presence of the fluid such that the fluid responsive member is severed thereby releasing the actuator such that the valve member automatically moves to the second position.

Abstract: A linked brake system for motorcycles includes front and rear wheel brakes, an actuating device by which the front and rear wheel brakes can be operated simultaneously, a control system for controlling brake pressures at the front and rear wheel brakes, and wheel rotational speed sensors for measuring the wheel rotational speeds of the front and rear wheels as well as for determining a reference deceleration approaching the actual vehicle deceleration and for detecting running conditions in which a lock-up tendency exists at at least one of the front wheel and the rear wheel. The wheel rotational speed sensors is connected to the control system. Upon an operation of the actuating device, the control system operates the front and rear wheel brakes with a set brake pressure ratio, provided the reference deceleration is less than a set deceleration.

Abstract: A motorcycle chassis component, such as a fork bridge of a front wheel fork, is provided with an integrated partial section of a fluid system circuit, such as a hydraulic brake circuit. By providing a partial section of the fluid system in the chassis component, the chassis component functions as a portion of the fluid system, thereby simplifying the fluid system, lowering manufacturing and component costs, and reducing fluid system vulnerability to damage from external impacts.

Abstract: The invention relates to a method for determining the mass of a motor vehicle while taking different driving situations into consideration, involving an evaluation of the respective vehicle acceleration, wherein apart from the driving force of a vehicle drive unit the respective resistance forces resulting from rotational forces, from the air resistance, from the rolling resistance and the slope descending force, are taken into consideration and wherein in the same approach additionally the respective braking force is taken into consideration so that a multitude of different driving situations is evaluated, wherein the individual results are stored and combined suitably into a collective mass value. Hereby different driving situations can be weighted differently.

Abstract: A voltage regulating control system for vehicle systems which includes a power supply providing electrical power to the system and having a predefined maximum voltage. A controller controls an actuator performing a vehicle system function and the electrical load in the system wherein the controller has a first predefined minimum operating voltage. A voltage regulator communicates with the controller and the power supply and senses a system input voltage in the system. In response to a sensed voltage dip in excess of a predetermined value, the regulator changes an effective electrical impedance of the system to maintain the system voltage at a predefined minimum voltage greater than the first predefined minimum operating voltage required by the controller.

Abstract: This invention relates to a blade of a turbomachine, more particularly an axial-flow high-pressure turbine, having at least one integrated cooling air duct issuing at the downstream back of the blade root when viewed in the direction of the working gas conducted by the blade. This invention also relates to a rotor disk of a turbomachine having several blades designed in accordance with the present invention. The cooling air duct in accordance with this invention branches off from a cooling air chamber provided in the blade root, from which chamber a cooling air duct issuing at the surface of the blade conducting the working gas is supplied with cooling air, where the cooling air duct issuing at the back of the blade root deflects the cooling air flow through it and provides an essentially continuous passage. The cooling air-duct is preferably made to converge in the direction from the cooling air chamber toward its outlet port and is shaped in accordance with design rules for axial-flow reaction turbines.

Abstract: A casing construction is provided on a gas turbine having a fan downstream of which a precompressor is situated, the precompressor casing being detachably connected with the casing of the compressor which follows the precompressor—viewed in the flow direction. An upstream end section of the precompressor casing is additionally linked to the compressor casing by at least two tension-rod-type tension devices which are situated essentially diametrically opposite one another with respect to the longitudinal axis of the gas turbine. Steel cables are preferably used as the tension devices and are fastened at least on one of the two casings by means of a tension-nut-type end piece. As a result, the precompressor casing can be constructed of a non-high-strength material and, in addition, can be linked by means of several pairs of tension-rod type tension devices to the casing of the compressor.

Abstract: The invention relates to a safety system having electrical consumers (18a, 18b) which are supplied with electrical energy in normal operation from an electrical energy source (2, 4, 6). The safety system includes an electrical energy store (14a, 14b) which supplies the electrical consumers (18a, 18b) with electrical energy when the instantaneous operating voltage at the energy source (2, 4, 6) drops below a limit value. The rated voltage of the energy store (14a, 14b) is less than the rated voltage of the electrical energy source (2, 4, 6) and the electrical energy store (14a, 14b) is connected to the electrical energy source (2, 4, 6) via a switchover element (16a, 16b) which assumes the function of a diode. The switchover element (16a, 16b) ensures that a switchover from normal operation to an emergency operation takes place automatically and that, during normal operation, the electrical energy store (14a, 14b) is not charged unintentionally by the electrical energy source (6).

Abstract: An axially stepped annular combustion chamber, especially of an aircraft gas turbine, has an essentially independent main combustion chamber 5' as well as an independent pilot burner chamber 5. An appropriate design of internal limiting walls 6a, 6b of pilot burner chamber 5 ensures that the combustion gases enter the main burner zone 5' essentially in the radial direction. This ensures optimum mixing of the fuel with air in this main combustion zone and/or main combustion chamber 5', thus minimizing exhaust emissions and ensuring optimum temperature distribution at combustion chamber outlet 8. Internal limiting wall 6a can have a deflecting section 12 or outer wall section 6b can run at an angle to pilot burner lengthwise axis 3a, so that the cross section of pilot burner zone 5 is reduced in the flow direction.

Abstract: A device for controlling a starting procedure of a motor vehicle for initiating a movement of the motor vehicle includes a controller which receives as input, signals generated by an engine shaft speed sensor, a driving speed sensor, a transmission shaft speed sensor, a transmission output shaft speed sensor, and an accelerator pedal position sensor. The controller is operatively connected to the engine for increasing the engine speed above a minimum threshold value when the driver signals his desire for a racing start. The controller is also operatively connected to a clutch activation device for deliberately producing a slip of the driving wheels and for controlling the slip of the driving wheels by controlling a slip of the clutch after a starting time point signaled by the driver.

Abstract: In connection with a turbine rotor disk in whose disk grooves air-cooled turbine blades have been inserted, at least two cooling air channels, respectively extending from the same disk front face, terminate in each disk groove. The outlet openings of two cooling air channels in each disk groove preferably lie essentially next to each other in a common sectional plane, which is normal to the disk axis. Because of this it is possible to supply a larger cooling air flow without drastically increasing the weakening, or respectively the stress of the disk in the groove bottom.

Abstract: A fuel injection device for a combustion chamber of a gas turbine with a liquid-cooled injection nozzle having a coolant tube which surrounds a fuel-conducting tube at a distance and which terminates in an annular chamber in the vicinity of the nozzle exit opening, or which constitutes this annular chamber which directly surrounds the fuel-conducting tube, wherein a separating wall element which surrounds the fuel-conducting tube is provided inside the coolant tube upstream of the annular chamber, viewed in the flow direction of the fuel, which divides the interior of the coolant tube into two chamber segments, wherein the first chamber segment is connected with a feed conduit and the second chamber segment with a removal conduit for the coolant.

Abstract: A turboprop engine having an oil cooler which is disposed in the engine pod and upon which cooling air acts. The oil cooler is disposed in a flow duct which at the rear opens into the environment and at the front can be connected alternately to an air-inlet opening or to the feed duct of the compressor of the aircraft gas turbine.

Abstract: The holding of a burner collar as well as of a heat shield in the end wall of an annular combustion chamber is described. An annularly constructed holding part is provided which, in segments, has flanks between which the burner collar is held by lugs arranged thereon. The holding part is placed on a ring attachment of the heat shield and, together with the heat shield, is screwed to the end wall.

Abstract: A tandem turbine-blade cascade for a turbine, turbo-engine or power engine includes at least two rows of blades disposed substantially directly in line with one another in the rotor or stator. The second row of blades has a larger number of blades than the first row of blades and the second row of blades are distributed nonuniformly. The spacing (s.sub.1) between two blades of the first row of blades is substantially equal to the sum (s.sub.2) of two successive blade spacings (s.sub.12, s.sub.22) in the second row of blades and the distribution quotient (s.sub.12 /s.sub.22) of the blade spacings in the second row is in the range between 0.4 and 1.0.

Abstract: A heat shield for the head area of a combustion chamber has as usual a through-hole for the burner. A continuous collar with air passage holes projects from the back side of the heat shield at the edge of the through-hole. Cooling air can flow through the holes into a ring-shaped channel arranged between the heat shield and the burner, then into the combustion chamber. This cool air flow lies as a cool air film on the surface of the heat shield. For that purpose, the cool air flow or cool air film swirls in the same direction as the combustion air supplied through the burner. To generate this swirling motion, the air passage holes in the collar are inclined in the radial direction. The heat shield is further provided with appropriate inclined effusion holes.

Abstract: In connection with a turbine rotating disk with disk grooves, constituted by disk fingers, for receiving turbine blades, as well as with measures for guiding a cooling air flow from a chamber located in front of the disk to one behind the disk, a cooling air transfer channel is provided in at least some of the disk fingers, which respectively starts at the front disk face, and makes a transition into a cooling air exhaust channel, also essentially extending in the radial direction in the disk finger, whose outlet opening on the rear disk face side lies closer to the disk axis than the disk ring section, which has the disk grooves and is widened in the disk axial directions. By means of this it is possible to convey a larger cooling air flow which, in an advantageous manner, indirectly aids the cooling of the disk in the area of the disk grooves.

Abstract: The invention concerns a shut-off valve member which can be moved by spring force into a position in which it interrupts the fuel line to the gas turbine. The shut-off valve member is held by a likewise pre-tensioned scissor-type mechanism in the position in which it opens the fuel line. If a faulty gas turbine component acts on the scissor-type mechanism, the shut-off valve member is released and moves abruptly into the position in which it interrupts the fuel supply. The gas turbine is thus switched off safely and reliably in the event of failure of a component, for example the turbine shaft.

Abstract: A combustion chamber of a gas turbine with a ring-shaped head section, in which a front plate for receiving burners is provided, which are supplied with a primary airflow via annularly arranged air inlet openings in the head section, wherein the stagnation points being formed on the exterior of the head section (1) in respect to the inflow to the air inlet openings form a ring, within which the air inlet openings are located, and wherein furthermore the front plate has heat shields provided in the combustion chamber burner section and fixed in place by means of bolt connections. In addition, mounting openings for the bolt connections (11) are provided in the head section, wherein the backup points being formed on the exterior of the head section in respect to the inflow to the mounting openings form a ring, which is not located outside the ring formed by the backup points of the air inlet openings.

Abstract: High thermal stabilities are achievable in linear or multidimensional sulfone, solvent resistant oligomers by incorporating oxazole, thiazole, or imidazole linkages into the oligomer backbone. Blended oligomers of crosslinking oligomers and noncrosslinking compatible polymers are also described. The oligomers include residues of four-functional compounds of the formula: ##STR1## (or isomers thereof) wherein M=--CO--, --S--, --O--, --SO.sub.2 -- or --(CF.sub.3).sub.2 C--; andY=--OH, --SH, or --NH.sub.2.In an improved method, the reactants are condensed at or below ambient temperature in the presence of pyridine in a suitable solvent such as N,N'-dimethylacetamide (DMAC).