Abstract: A computed tomography apparatus has a gantry that is rotatable around a rotational axis and a detector for determining an unbalanced mass of the gantry and a calculating unit for calculating the location or locations at the gantry at which a weight or at which weights should be arranged for compensating the unbalanced mass.

Abstract: An air-cooled power converter with gate turn-off power semiconductors, is described in which the cooling capacity is such that the temperature of the gate turn-off power semiconductor does not exceed a critical temperature limit, the power converter having optimized heat sinks, at least some of which are thermally connected in parallel, and the power converter is designed to operate at a continuous load of 1 to 20 megawatts, preferably of 2 to 10 megawatts.

Abstract: It is a problem in conventional aircraft having a fuselage of substantially circular cross-section, that a conventional lower deck would have an insufficient standing height for passengers if the lower deck were to be equipped as a passenger cabin space including seats, sleeping cabins, or other passenger service facilities. In the present aircraft, the lower deck floor (2, 2') is depressed or dropped at least in a certain area (14) that will form an aisle (16), so that the free height of the lower deck in the area of the depressed floor provides at least the normal standing height (HS) for a person. A module (15, 15') containing passenger service facilities is arranged in the lower deck area at least to one side of the depressed floor area. A modular construction provides a great flexibility and convenience in reconfiguring a lower deck from a cargo hold configuration to a passenger cabin configuration and vice versa.

Abstract: An energy absorbing structural unit is attached outside the fuselage belly of an aircraft having at least two decks arranged one over another. At least the lower deck, of which the floor is adjacent to the fuselage belly, includes passenger cabin compartments and/or service facilities. The energy absorbing structure is an energy absorbing structural unit (5) that is attached outside of the existing aircraft fuselage (2) approximately vertically below the passenger cabin compartment (9) and/or service facilities provided on the lower deck of the aircraft. The energy absorbing structural unit absorbs impact energy arising in a crash or emergency landing of the aircraft. Because impact energy is absorbed by the external structural unit rather than or in addition to the structure of the aircraft fuselage and air frame, it is possible to provide lower deck passenger cabin space that may be continuously occupied by passengers and crew even during the take-off and landing phases of a flight.

Abstract: A system for storing and transporting food and beverages on board of an aircraft is equipped with a centrally arranged container having the configuration of a freight container for holding menu boxes and beverage boxes with at least one distribution station or pantry, and with a transport channel that communicates with the container and the pantry. The transport channel includes at least one vertical conveyor so that the container may be placed on a lower freight deck while the pantry is positioned on the passenger deck. Such a system can handle more menu and beverage boxes of standardized sizes than trolley based systems without sacrificing space for passenger seats.

Abstract: An aircraft body or fuselage is divided by a main deck (3) to form an upper deck and a lower deck. The lower deck has its own floor (5). A connecting device or several such devices, for example stairs and/or elevators, interconnect the upper deck with the lower deck in positions to facilitate central access to a plurality of lower deck facilities. Supply facilities and sanitary facilities are arranged on the lower deck to provide additional seating space on the upper deck. The lower deck may also hold resting areas, such as a lounge that may be equipped with beds, such as convertible beds. A food distribution station is arranged on the upper deck in vertical alignment with a galley on the lower deck. All the facilities of a group of facilities on the lower deck are centrally accessible.

Abstract: An overhead luggage compartment system for a passenger aircraft is equipped with luggage compartments formed as shells that can be adjusted in their tilted position and in their elevated position for easy access. In the closed position the shells are fully recessed into the ceiling structure of the aircraft cabin. Such a structure does not require any separate covers or lids for the luggage compartments. Additionally, a power drive lifts, lowers, and tilts the compartment shells. In the lowered position the shells are fully accessible even for short people. In the upper, recessed position the shells are closed and locked.

Abstract: A stair and stairwell construction for interconnecting two different decks, especially in an aircraft, includes stair treads, stringers, and a stairwell enclosure or housing. At least one of the just enumerated components is constructed to be positionable or tiltable relative to the planes defined by the decks. One of these components is positionable into an open position, thereby providing a passageway, or into a closed position thereby blocking the passageway. In both positions, this positionable component is lockable.

Abstract: A refrigeration system for cooling foodstuffs in an aircraft body having a deck and a space (26) below the deck, uses a surface type heat exchanger (7) positioned for a heat exchange with the environment of the aircraft. A catering container (1) is constructed as a cooler box, and at least one refrigeration device (21) is exchangeably mounted in the space below the deck. The refrigeration device (21) is equipped with at least one modular refrigeration unit (6) connected through respective pipes or conduits (8, 9) to the surface type heat exchanger (7). The refrigeration device (21) is connected by further conduit means (3, 10) to the cooler box (1). The temperature difference between inside and outside of the aircraft is efficiently used for the refrigeration.

Abstract: A supply system for passenger aircraft uses one or more catering containers which are loaded with the aid of the aircraft's loading system into the cargo hold of the passenger aircraft and positioned in vertical alignment with a supply distribution and work cabin on the passenger deck or floor of the aircraft. A horizontal conveying system is capable of moving transport carts or standardized packages in the directions of a rectangular coordinate system for bringing carts or packages into a lifting position. A vertical lift cooperates with the horizontal conveyor system for bringing trolleys initially held in the carts or standardized packages into the distribution and work cabin. Instead of equipping the catering container with a horizontal conveyor system that works in the X- and Y-direction, it is possible to use any other robot system for retrieving standardized packages and/or trolleys from the catering container.

Abstract: Antimicrobial mixtures containing quaternary ammonium compounds and iodopropynyloxy ethanol carbamate compounds in a ratio by weight of 0.3:1 to 9:1.

Abstract: Antimicrobial mixtures contain quaternary ammonium compounds and quaternary phosphonium compounds in a ratio by weight of from 1:9 to 9:1.

Abstract: A method and circuit arrangement is disclosed for converting Gray code signals into counting pulses, forming a counter status, detecting interference signals infringing the Gray code and for forming an error signal with a network defining a finite automaton according to Moore or Mealy, wherein the network forms no error signal when a Gray code infringement is followed by a second Gray code infringement. The disclosed network arrangement in one embodiment comprises a quadruple interpolator (quadrature decoder) for precision dimension measuring machines with optoelectronic scale scanning. Interruptions of the measuring procedure and errors are reduced by not generating an error signal when a Gray code infringement is followed by a second Gray code infringement.