Volvo Aero Corporation

Other

Jan Lundgren

Mats Hallqvist

Arne Boman

Jan Häggander

Jan H&auml;ggander

Mats Olofsson

Thomas Aaboe Jensen

Nikolaj Bruun

Steen Teller

A method of manufacturing a wall structure includes producing at least one elongated web in a workpiece by feeding a machining tool along the workpiece, wherein the machining tool simultaneously machines a first side surface of the web, a second side surface of the web and a top surface of the web.

Method of manufacturing a wall structure and a machining tool

Method and arrangement for providing a stator or rotor component that is intended during operation to conduct a gas flow. A first wall part () is placed with its one edge bearing against the flat side of a second wall part (), extending in the radial direction of the component, in such a way that the first wall part extends in the circumferential direction of the component. The edge of the first wall part is then laser-welded to the second wall part from an, in the circumferential direction, opposite side of the second wall part in relation to the first wall part in such a way that the joined-together portions of the wall parts form a T-shaped joint.

Method for manufacturing a stator or rotor component

A method for manufacturing a stator or rotor component () for a gas turbine in which at least one wall element () is joined together with at least one ring element (). The edges of the wall element () are laser-welded firmly on the ring element () from an opposite side, in the radial direction, of the ring element in relation to the wall element in such a way that the joined-together portions of the wall element and the ring element form a T-shaped joint.

The invention relates to a method for manufacturing a stator component that is intended in operation to guide a gas flow and to transfer loads. The component is constructed of at least two sectors in the direction of its circumference. The sectors are cast in separate pieces, positioned adjacent to each other and joined together by welding.

Method of manufacturing a stator component

Method and arrangement for providing a stator component intended during operation to conduct a gas flow. The component is made up of at least two sections () in its circumferential direction, which sections each have at least one wall part (). The sections are placed adjacent to each other and two wall parts, one from each of two adjacent sections, are connected in order together to form a means, extending in the radial direction of the component, for guidance of the gas flow and/or transmission of load during operation of the component.

Method for manufacturing a stator component

A wall structure capable of withstanding high thermal load, including a wall structure with an inner wall, an outer wall positioned about the inner wall, and distancing elements located between the inner and outer walls. The distancing elements are joined to at least one of the inner and outer walls by means of laser welding and thereby establishing a plurality of cooling ducts between the inner and outer walls and a weld joint formed by the laser welding and having a cross-section taken through the wall structure that is substantially T-shaped and which displays a rounded shape towards an inside one of the plurality of cooling ducts.

Method for manufacturing outlet nozzles for rocket engines

Method and arrangement for providing liquid fuel rocket engine member (). The member forms a body of revolution having an axis of revolution and a cross section that varies in diameter along said axis. The wall structure includes a plurality of cooling channels (). The outside of the wall structure includes a continuous sheet metal wall (). The cooling channels () are longitudinally attached to the inside of the sheet metal wall. The method for manufacturing the rocket engine member () includes the steps of forming a sheet metal wall () having a wall section corresponding to the desired nozzle section, providing a plurality of channel members (), and attaching the channel members () to the inside of the sheet metal wall ().

Rocket engine member and a method for manufacturing a rocket engine member

Methods for manufacturing outlet nozzles for use in rocket motors are disclosed. The methods include providing an inner wall, positioning an outer wall around the inner wall, positioning spacers in the space between the inner and outer walls, and laser welding between the spacers and at least one of the inner and outer walls in order to form cooling ducts between the spacers and to provide T-shaped joints between the spacers and at least one of the inner and outer walls, the T-shaped joints including a rounded shape within the cooling ducts.

Method and arrangement for manufacturing an outlet nozzle ( ) for use in a liquid fuel rocket engine. The nozzle forms a body of revolution having an axis of revolution and a cross section that varies in diameter along said axis. The nozzle has a wall structure comprising a plurality of mutually adjacent cooling channels extending substantially in parallel from the inlet end ( ) of the nozzle to its outlet end ( ). The method includes providing a plurality of preprocessed profile members, each having a web and flanges in opposite directions from said web. Each profile member is machined to present a longitudinally gradually tapering width. The member is curved to conform with the wall section of the nozzle, and members are joined by welding the flanges to form a bell-shaped nozzle structure with cooling channels ( ) formed by adjacent webs and adjacent pairs of flanges.

The invention relates to an apparatus for increasing the heat transfer to the coolant at the inside of a nozzle wall provided with coolant channels of expander cycle rocket engines. To achieve this the invention proposes that, to disturb the boundary layer at the nozzle wall and thereby increasing the heat transfer, the inside of the nozzle wall facing the flame has a particularly chosen increased surface roughness of such a magnitude that it penetrates the viscous sub-layer of the boundary layer at the nozzle wall.

Apparatus for controlling the heat transfer to the nozzle wall of expander cycle rocket engines

The invention refers to a method for determining the position of an elongated narrow object relative the surface of an obstructing disk-like body in front of said object and oriented at an angle thereto, by means of electromagnetic ionizing radiation, for guidance of the movement of an associated laser welding equipment For providing the carrying out of this method with high speed and greatest precision when manufacturing sandwich elements with conical or double-curved surface it is suggested according to the invention that from the side of the body remote from the object is directed, under approximate movement in the longitudinal direction of the object one precisely collimated radiation beam obliquely to the object under simultaneous scanning motion at right angles thereto, that the radiation back-scattered from the object is collected at the same side of the body and is brought to form a signal which is compared with memory-stored predetermined preference signals for the desired correct position of the object relative the body. The invention also suggests a device for carrying out this method.

Method and apparatus for determining the position of an elongated object relative the surface of an obstructing body by means of electromagnetic radiation

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Grundsund, Sweden

Jan Lundgren