Abstract: The invention relates to a run-in coating (10) for an outer air seal of a turbomachine, especially of an aero engine, comprising a substrate (12) of segmented form which carries a honeycomb structure (14) with an run-in surface (15) to face rotor blades of a rotor of the turbomachine, wherein a radial thickness of the honeycomb structure (14) varies in the circumferential direction. The invention furthermore relates to an outer air seal for a turbomachine and also to a turbomachine with an outer air seal.

Abstract: The invention relates to a run-in coating (10) for an outer air seal of a turbomachine, especially of an aero engine, comprising a substrate (12) of segmented form which carries a honeycomb structure (14) with an run-in surface (15) to face rotor blades of a rotor of the turbomachine, wherein a radial thickness of the honeycomb structure (14) varies in the circumferential direction. The invention furthermore relates to an outer air seal for a turbomachine and also to a turbomachine with an outer air seal.

Abstract: A casing structure for a fluid flow machine, in particular for a gas turbine or an aircraft engine, including an outer casing wall and an inner casing wall, which annularly surround a flow channel of the fluid flow machine and are spaced apart in a radial direction with respect to the flow channel. At least one cavity is formed between the inner and outer casing walls. The cavity is axially divided into at least two regions which are separated from each other by an axial seal in such a way that different pressure conditions are created according to the axial position of these regions, which different pressure conditions correspond to the pressure conditions in the flow channel. A corresponding fluid flow machine such as, for example, an aircraft engine.

Abstract: A turbomachine having a flow channel and a housing radially surrounding the flow channel, a plurality of stationary and moving blades being situated in the flow channel, stationary blades being situated adjacent to the moving blades in the axial direction, and the stationary blades having at least one stationary blade hook which engages with at least one housing hook for the purpose of connecting the stationary blades to the housing. A sealing and lining element is situated in the radial direction between the moving blades adjacent to the stationary blades and the housing, and has a sealing structure interacting with blade tips of the moving blades. A heat protection element is provided in the area between the sealing and lining element and the housing, and a sealing element being situated on the heat protection element for the purpose of sealing contact with the housing hook.

Abstract: A housing structure for a turbo-engine, especially for a gas turbine or an aircraft engine, includes an outer housing wall and an inner housing wall, the inner and outer housing walls annularly enclosing a flow channel for the turbo-engine and being spaced apart radially from the flow channel. At least one heat shield is arranged between the inner and outer housing walls, and a bar or a fixture projects at least somewhat radially from the inner housing wall. The bar or the fixture has on at least one side a broadening element that includes a sealing face against which the heat shield is positioned in a sealing manner.

Abstract: An integrally bladed rotor disk (20) for a turbine, including rotor blades (40), which are joined in a substance-to-substance bond to a disk element (30), and a sealing device (60) for preventing or reducing the extent to which cooling air is able to flow from a high-pressure side (12) of the rotor disk (20) through openings (24) on the rotor disk (20) to a low-pressure side (14) of the rotor disk (20).

Abstract: A casing structure for a fluid flow machine, in particular for a gas turbine or an aircraft engine, including an outer casing wall and an inner casing wall, which annularly surround a flow channel of the fluid flow machine and are spaced apart in a radial direction with respect to the flow channel. At least one cavity is formed between the inner and outer casing walls. The cavity is axially divided into at least two regions which are separated from each other by an axial seal in such a way that different pressure conditions are created according to the axial position of these regions, which different pressure conditions correspond to the pressure conditions in the flow channel. A corresponding fluid flow machine such as, for example, an aircraft engine.

Abstract: A housing structure for a turbo-engine, especially for a gas turbine or an aircraft engine, includes an outer housing wall and an inner housing wall, the inner and outer housing walls annularly enclosing a flow channel for the turbo-engine and being spaced apart radially from the flow channel. At least one heat shield is arranged between the inner and outer housing walls, and a bar or a fixture projects at least somewhat radially from the inner housing wall. The bar or the fixture has on at least one side a broadening element that includes a sealing face against which the heat shield is positioned in a sealing manner.

Abstract: A turbomachine having a flow channel and a housing radially surrounding the flow channel, a plurality of stationary and moving blades being situated in the flow channel, stationary blades being situated adjacent to the moving blades in the axial direction, and the stationary blades having at least one stationary blade hook which engages with at least one housing hook for the purpose of connecting the stationary blades to the housing. A sealing and lining element is situated in the radial direction between the moving blades adjacent to the stationary blades and the housing, and has a sealing structure interacting with blade tips of the moving blades. A heat protection element is provided in the area between the sealing and lining element and the housing, and a sealing element being situated on the heat protection element for the purpose of sealing contact with the housing hook.

Abstract: An integrally bladed rotor disk (20) for a turbine, including rotor blades (40), which are joined in a substance-to-substance bond to a disk element (30), and a sealing device (60) for preventing or reducing the extent to which cooling air is able to flow from a high-pressure side (12) of the rotor disk (20) through openings (24) on the rotor disk (20) to a low-pressure side (14) of the rotor disk (20).

Abstract: A method for automatic address assignment is disclosed, said method being based on a distance measurement, a master (M) transmitting via the bus a preamble (P) which is received by all the slaves which are to be addressed. The slaves react to the preamble (P) by transmitting a response signal sequence (A). A slave (S2) which is located upstream, in the direction of the master (M), of a slave (S3) which transmits a response signal sequence (A) registers the response signal sequence (A) of the slave (S3) and subsequently waits for a new preamble (P). The slave (Sz) which does not register any response signal sequences (A) from other slaves is the last slave (Sz), seen from the master (M), without address allocation on the bus. This slave (Sz) switches into a state in which it is ready to receive an address-assigning telegram (T) from the master (M), with which address-assigning telegram (T) it is assigned an unambiguous address.

Abstract: 3,5-Dihalogeno-1,2,6-thiadiazin-4-ones of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are chlorine, fluorine or bromine, in particular 3,5-dichloro-1,2,6-thiadiazin-4-one, are excellently suitable for use as biocides for the protection of industrial materials and for water systems, for example for wood, plastics, paints, oils, adhesives and industrial water circulation systems.

Abstract: Compounds of the formulaR.sup.1 3Y.sup..sym. R.sup.2 X.sup..crclbar. (I)in which the radicals R.sup.1 are identical or different and are C.sub.2 -C.sub.6 alkyl, phenyl, C.sub.1 -C.sub.2 alkyl-substituted phenyl or C.sub.5 -C.sub.7 cycloalkyl, benzyl, tolyl, or hydroxy-C.sub.1 -C.sub.4 alkyl and R.sup.2 is straight-chain or branched C.sub.8 -C.sub.2 alkyl, and Y is P or N, or R.sup.1 3Y.sup..sym. R.sup.2 is ##STR1## in which R.sup.4 is H or --CH.sub.3, or ##STR2## and X is BF.sub.4 or PF.sub.6, which are used as biocides, in particular in industrial solutions, in paints or in solid materials.

Abstract: A circuit arrangement is provided for clamping the black reference signals contained in a video signal sequence of an optical line scanner comprising a CCD sensor, using a video amplifier and a following analog-to-digital converter, and a memory controlled by the black reference signal for the control criterion that influences the video amplifier. A NOR gate is connected to all of the outputs of the analog-to-digital converter and the output of the NOR gate is connected to an input of a D flip-flop which is clocked by the black reference signal, and an integrator is connected to the output of the D flip-flop by way of a network and symmetrically driven with reference to its input voltage so that the output voltage of the integrator which decreases or increases in a ramp-like manner is added to the signal voltage of the line scanner at the input of the video amplifier.

Abstract: Special quaternary ammonium compounds are suitable for controlling bacteria, algae and other micro-organisms in cooling water circulation systems, swimming pools and industrial water tanks.

Abstract: A lubricating system for bearing shafts and the like, for example, in a gas turbine power plant especially for an aircraft, has an oil-air separator which is vented to the atmosphere. A pump wheel is used for the separation of the oil and the air out of an oil-air mixture. The pump wheel is so constructed that centripedal and centrifugal forces are employed for the oil-air separation. The air passes by centripedal force through a sponge type filter structure and out through a hollow central shaft carrying the pump wheel or forming an integral one-piece component with said pump wheel. The oil does not travel through the filter but is reversed in its travel direction by centrifugal force for return into the lubricant circulating system.

Abstract: Mixtures of(a) a 2-chloro-4,6-diamino-s-triazine of the formula I ##STR1## wherein R.sup.1 is alkyl having 2-5 C atoms or cycloalkyl having 3-5 C atoms, and R.sup.2 is alkyl having 3-5 C atoms or cycloalkyl having 3-5 C atoms, and(b) active halogen or an agent releasing active halogen are suitable for the combating of algae and simultaneous disinfection in water reservoirs, particularly in swimming-baths, and also in cooling-water circulation systems.

Abstract: A non-contacting sealing arrangement for sealing two counter-rotating shafts with the aid of a housing having a tire-casing-like shape which surrounds at least one centrifugal disk connected for rotation in unison with one rotatable shaft and laterally surrounded by the casing-like part with a narrow gap; the casing-like part is arranged eccentrically to the axis of the shaft on which the centrifugal disk is mounted in order to thus assure a return feed for the liquid sealing medium, such as oil, to bearing places. The invention enables alternate pressure loads and is particularly suited in applications between at least two bearing chambers of aircraft propulsion units.

Abstract: A non-contacting seal between a rotating part to be sealed and a stationary part, in which the rotating part includes a coaxial disk which is surrounded by a stationary collecting channel axially closely adjoining the disk but without contacting it. The collecting channel forms a spirally shaped hollow space in the circumferential direction of the rotating part, with a sealing medium return line connected to the hollow space within the area of enlargement of the hollow space. A seal, however, may also be installed between the rotating part and the fixed part.

Abstract: A method of using mono- or dibromodicyanomethane for controlling harmful organisms in water, in aqueous systems, in oil or in fuels is disclosed. The compounds act extremely rapidly in very low concentrations.