Abstract:
A containment system for containing fragments of a burst rotor including first and second means for frangibly connecting a containment element to first and second walls, the first and second means rupturing upon being subjected to a load mainly produced by a translational motion of at least one fragment impacting the element.
Abstract:
A compound cycle engine (10) comprises a compressor and a turbine section (14, 18), and at least one cycle topping device (16) providing an energy input to the turbine section (18). The compressor section (14) compresses the air according to a pressure ratio PRgt. The cycle topping device (16) further compresses the air according to a volumetric compression ratio Rvc, and wherein PRgt×Rvc are selected, according to one aspect of the invention, to provide a cycle which permit a more compact and lighter compound cycle engine to be provided.
Abstract:
A gas turbine engine diffuser comprises a bowl-shaped diffuser casing and a cover nested into the bowl-shaped diffuser casing and cooperating therewith in defining a diffuser passage having a channeled entry portion in fluid flow communication with a vaned exit portion via a vaneless intermediate portion. The channeled entry portion is divided into an array of inlet flowpaths by a first set of vanes. Likewise, the vaned exit portion is divided into an array of outlet flowpaths by a second set of vanes.
Abstract:
An external rotor gas turbine engine to provide direct high speed thrust or to provide rotational shaft work to power electrical generators or aircraft engine fans. To supply compressed air to the rotating inlet of the turbine or combustor, the dynamic compressor has an external rotor journaled onto an internal stator. The entire outside of the engine rotates allowing for a sealless high pressure rotating air source to the exoskeletal turbine. For the prime mover embodiment, the residual kinetic energy from the rotating nozzles may be recovered by an impulse turbine. For the high speed propulsion engine, the impulse turbine is replaces with stator vanes to redirect the momentum in an axial direction.
Abstract:
A gas turbine in which a centrifugal compressor which is driven by a high-pressure turbine and a variable inlet guide vane located at the inlet of the centrifugal compressor are provided, but an axial-flow compressor is not provided between the centrifugal compressor and the variable inlet guide vane, and an operating method of a gas turbine in which the output is varied by moving the variable inlet guide vane while keeping the speed of engine rotation at a high level near its rated value. It is possible to vary the output in a short period of time and durability of an engine is improve.
Abstract:
A thin outer metallic housing surrounds and is spaced from a one-piece cylindrical ceramic liner that insulates, supports and houses high temperature and rotating parts of the engine, the end faces of the liner constitute rubbing seal surfaces against which are directly mounted ceramic core rotating regenerators, the liner and housing having aligned holes through which is mounted the inline hot gas flow path components.
Abstract:
A propulsion unit for an aircraft comprises rotor means incorporating a multi-bladed fan which over an outer peripheral region thereof defines centrifugal flow compressor passages and centripetal flow turbine passages and an annular combustor encircling the rotor means. The combustor has inlet means for directing air from the compressor passages into the combustor and outlet means for directing combustion gases from the combustor into the turbine passages to drive the rotor means.