Abstract: A wide-band damper is designed for charge air lines of an internal combustion engine with turbocharger. The wide-band damper has an inlet and an outlet. Proceeding from the inlet, at least three slot chambers are arranged axially in series. The slot chambers are dimensioned for different frequencies f1, f2 and f3. At least three gap chambers are provided, which are arranged axially in series and axially downstream of the at least three slot chambers. The gap chambers are dimensioned for different frequencies f6, f7 and f8. Each of the frequencies f1, f2 and f3 of the slot chambers is lower than each of the frequencies f6, f7 and f8 of the gap chambers.

Abstract: A high-lift system of an aircraft has at least one drive unit, at least one load station as well as one or more transmissions for transmitting the drive energy of the drive unit to the at least one load station. One or more of the transmissions are made as transmission shafts from a material containing titanium or include a material containing titanium.

Abstract: A disc damper for a charge air line of an internal combustion engine that has a turbocharger. The disc damper includes an inlet, an outlet, and at least one slit chamber disposed between the inlet and outlet. Starting from the inlet, at least two gap chambers are provided downstream of the slit chamber and disposed axially one after the other. At least one of the following features is fulfilled: a) the slit chamber has a radial inner dimension that changes in the circumferential direction and/or b) the slit chamber has axial inner dimensions that change in the circumferential direction, and/or at least one gap chamber comprises radial inner dimensions that change in the circumferential direction.

Abstract: A wide-band damper is designed for charge air lines of an internal combustion engine with turbocharger. The wide-band damper has an inlet and an outlet. Proceeding from the inlet, at least three slot chambers are arranged axially in series. The slot chambers are dimensioned for different frequencies f1, f2 and f3. At least three gap chambers are provided, which are arranged axially in series and axially downstream of the at least three slot chambers. The gap chambers are dimensioned for different frequencies f6, f7 and f8. Each of the frequencies f1, f2 and f3 of the slot chambers is lower than each of the frequencies f6, f7 and f8 of the gap chambers.

Abstract: The present invention relates to a high-lift system of an aircraft having at least one drive unit, having at least one load station as well as having one or more transmissions for transmitting the drive energy of the drive unit to the at least one load station, wherein one or more of the transmission are made as transmission shafts which consist of a material containing titanium or comprise a material containing titanium.

Abstract: A hydrojet for ships, intended for use in shallow waters, has a semiaxially bladed impeller with a vertical axis of rotation rotatably arranged in a well-shaped housing. The drive for the impeller is introduced into the housing from the top through a cover plate, and the housing is closed at the bottom by a bottom plate which has a water inlet arranged in the center for axial admission to the impeller and at least one flatly sloped water outlet. A control device in which the water delivered by the impeller is fed to at least one outlet nozzle without conversion of kinetic energy into pressure energy, is arranged between the discharge end of the delivery channels of the impeller and at least one water outlet. The control device forms a ring channel without blading. The water inlet is designed asymmetrically.

Abstract: A drive unit for a relatively small watercraft has a cylindrical underwater partial housing which carries, at one end, an electric motor to be operated photovoltaically, with which a propeller is arranged, at the other end, in such a way that it is seated on a shaft which is rotatably mounted in parallel relationship to the motor output shaft. The propeller shaft is supported in non-lubricated bearings in a partial housing connected to the cylindrical underwater partial housing. A toothed belt drive, having a toothed belt extending from the motor-side open end of the cylindrical underwater partial housing into the cylindrical underwater partial housing, to the motor shaft, is inserted between the motor output shaft and the propeller shaft.