A turbine engine heat exchanger has: a manifold having a first face and a second face opposite the first face; a plurality of first plates along the first face, each first plate having an interior passageway; and a plurality of second plates along the second face, each second plate having an interior passageway. A first flowpath passing through the interior passageways of the first plates, the manifold, and the interior passageways of the second plates.

A turbine engine heat exchanger has: a manifold having a first face and a second face opposite the first face; a plurality of first plates along the first face, each first plate having an interior passageway; and a plurality of second plates along the second face, each second plate having an interior passageway. A first flowpath passing through the interior passageways of the first plates, the manifold, and the interior passageways of the second plates.

A turbine engine for an aircraft can includes a casing. The casing can be a fan casing surrounding a fan assembly for drawing air into the turbine engine. The fan casing can have a peripheral wall. A surface cooler can be provided in the turbine engine confronting the peripheral wall of the fan casing. The surface cooler can have a mounting bracket for mounting the surface cooler to the fan casing.

A turbine engine for an aircraft can includes a casing. The casing can be a fan casing surrounding a fan assembly for drawing air into the turbine engine. The fan casing can have a peripheral wall. A surface cooler can be provided in the turbine engine confronting the peripheral wall of the fan casing. The surface cooler can have a mounting bracket for mounting the surface cooler to the fan casing.

A fluid cooling system for a gas turbine engine having a core engine and an annular fan casing. The fluid cooling system includes a fluid reservoir positioned within the gas turbine engine and configured to contain a fluid. The system also includes a cold sink positioned within the gas turbine engine and having a lower temperature than the fluid. The system further includes a heat pipe including a first end, a second end, and a conduit extending therebetween, the second end thermally coupled to the cold sink, and the first end thermally coupled to the fluid, where the heat pipe facilitates a transfer of a quantity of heat from the fluid to the cold sink.

A gas turbine engine includes a core flowpath for flowing a core stream, a second flowpath located radially outward from the core flowpath for flowing a second stream, and an auxiliary flowpath located radially outward from the second flowpath for flowing an auxiliary stream. A heat exchanging device is constructed and arranged to divert a portion of the second stream into the auxiliary flowpath. A turbine exhaust case is constructed and arranged to flow the auxiliary stream into the core flowpath for mixing with the core stream.

A gas turbine engine comprising: a compressor; a first turbine; and a first compressor bleed valve in fluid communication with the compressor and configured to release bleed air from the compressor; wherein the first compressor bleed valve is configured to release bleed air to a downstream location in the engine, the downstream location being downstream of the first turbine; wherein the first compressor bleed valve is configured to open wherein the first compressor bleed valve is configured to open to at least two positions, to thereby release a variable amount of bleed air from the compressor.

Systems and methods for expanding an operating speed range of a high speed flight vehicle include providing an engine with an inlet air duct, and positioning a heat exchanger in the inlet air duct to cool at least a portion of duct air flow associated with an engine core. Additionally or alternatively, a nozzle assembly includes a cowl fluidly communicating with the engine and having a cowl internal surface defining a cowl orifice, and a plug defines a primary thrust surface. The plug is supported relative to the cowl so that a portion of the primary thrust surface is disposed within the cowl orifice to define a throat therebetween. An actuator is coupled to at least one of the cowl or the plug, and is configured to generate relative movement between the cowl and the plug, thereby to modify the throat.

Systems and methods for expanding an operating speed range of a high speed flight vehicle include providing an engine with an inlet air duct, and positioning a heat exchanger in the inlet air duct to cool at least a portion of duct air flow associated with an engine core. Additionally or alternatively, a nozzle assembly includes a cowl fluidly communicating with the engine and having a cowl internal surface defining a cowl orifice, and a plug defines a primary thrust surface. The plug is supported relative to the cowl so that a portion of the primary thrust surface is disposed within the cowl orifice to define a throat therebetween. An actuator is coupled to at least one of the cowl or the plug, and is configured to generate relative movement between the cowl and the plug, thereby to modify the throat.

A reheat assembly for gas turbine engine including a jetpipe casing having a reheat core section configured to flow air from inlet to outlet; and reheat bypass section configured to bypass air from inlet to outlet, wherein the reheat core section and the reheat bypass section are radially separated by support duct within the jetpipe casing; reheat arrangement including a radially extending flameholder and a core fuel injection port, wherein: the flameholder, mounted to the jetpipe casing, extends through the reheat bypass section and partly into the reheat core section; the flameholder is configured to form a wake-stabilised region within the core flow of air and the bypass flow of air downstream of the flameholder; and the core fuel injection port is: circumferentially aligned with the flameholder upstream of the wake-stabilised region, and configured to discharge fuel into the reheat core section for mixing with the core flow of air.