Mtu Motoren-Und Turbinen-Union Munchen Gmbh

Mtu Motoren-Und Turbinen-Union Muenchen, Gmbh

Motoren- Und Turbinen-Union Gmbh

Karl Maier

Christian Greune

Helmut Gross

Christian Gruene

Wilhelm Jurisch

Device for sealing a gap between components of groups of components

Apparatus for the compact assembly of a gas turbine engine with a recuperative exhaust gas heat exchanger wherein inlet and outlet ducts of the core of the heat exchanger are supported by support plates attached to the casing of the heat exchanger. The support plates are connected to the engine casing with capability of relative movement between the ducts and the support plates so that thermally produced expansions and contractions are taken up without stress at the support points of the ducts with the support plates and within the heat exchanger. As a consequence, no expansion joints are necessary in the connection lines.

Assembly of a heat exchanger on a gas turbine engine

A heat exchanger having two mainfold ducts extending in parallel, adjacent relation connected to each other by heat exchange tubes. The manifold ducts are formed by a plurality of duct segments axially aligned one after the other in sealed relation and a support frame is arranged externally of the manifold ducts and is secured to and supports the duct segments individually at one of their ends. Each duct segment is secured to the frame at one of its ends while its other end is guidably supported and allowed to axially expand and contract relative to the end of the adjacent duct segment. This provides favorable resistance to the loads developed during operation as well as simple dismantling of the heat exchanger.

Support means for the manifold ducts of a heat exchanger

A process of manufacturing a spacer element for spaced heat exchange tubes of a heat exchanger in which the tubes are of elliptical cross section and arranged in rows and columns. In the process a band of stranded interwoven fine wires are wound between and on the surfaces of the spaced heat exchange tubes and is fused to the tubes at the regions of contact therewith by a heating operation to form a spacer for holding the tubes in spaced relation. The heating operation can be carried out by heating the tubes and band in an oven, either in a vacuum or with a protective gas.

Process for producing a spacer for the tubes of a heat exchanger

Fuel dispensing apparatus for dispensing fuel to a gas turbine engine is provided which includes a fuel metering slide valve having a control slide piston which directly controls an opening for supply of fuel to a gas turbine engine. A piston-cylinder servo-mechanism is provided for controlling flow of a servo fluid which acts on the control slide piston to assist in the movement thereof between respective positions. An auxiliary control slide piston of the servo-mechanism is in turn acted upon by supply of pressure to respective oppositely facing pressure surfaces from an electro-hydraulic converter. The electro-hydraulic converter is controlled by an electronic control mechanism responsive to control an engine operating parameters. In order to attenuate the effects due to the servo-mechanism supplying servo-assist fluid pressure to the control slide piston, a feedback signal arrangement including a coil spring abutting oppositely facing surfaces of the auxiliary control piston and the control piston, as well as pressure fluid acting on oppositely facing pressure faces of said pistons is provided. Also, an electrical signal generating means is provided for supplying an electrical signal to the electronic control mechanism, which electrical signal is a direct function of the instantaneous position of the control slide piston of the metering valve.

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Karlsfeld, Germany

Karl Maier