Abstract: A recuperator includes a monolithic heat exchanger core having a first side proximal to a combustor inlet and a turbine outlet, and a second side that includes an exhaust outlet. A compressed air inlet is located on the second side, and a compressed air outlet is located on the first side. The compressed air outlet supplies air to a combustor. A first plurality of passageways connects the compressed air inlet to the compressed air outlet. A turbine exhaust inlet is located on the first side, and a turbine exhaust outlet is located on the second side. A second plurality of passageways connects the turbine exhaust inlet to the turbine exhaust outlet. The first and second plurality of passageways are defined by parting plates that extend radially outward in a spiral pattern that maintains a substantially equal distance between adjacent parting plates.

Abstract: The present disclosure is directed to a method and structure of coupling a flameholder assembly to a hot section of a propulsion system, such as an afterburning exhaust section. The propulsion system includes an outer casing and an inner casing defining a flameholder assembly disposed radially within the outer casing. The method includes providing a housing defining a retaining rod and groove into which a structural member attaches; providing a retaining plate defining an opening through which the structural member is extended; coupling the structural member to the retaining rod of the housing and the outer casing of the propulsion system; and coupling the retaining plate to the housing and the inner casing of the propulsion system such that the structural member is retained between the housing and the retaining plate.

Abstract: A recuperator includes a monolithic heat exchanger core having a first side proximal to a combustor inlet and a turbine outlet, and a second side that includes an exhaust outlet. A compressed air inlet is located on the second side, and a compressed air outlet is located on the first side. The compressed air outlet supplies air to a combustor. A first plurality of passageways connects the compressed air inlet to the compressed air outlet. A turbine exhaust inlet is located on the first side, and a turbine exhaust outlet is located on the second side. A second plurality of passageways connects the turbine exhaust inlet to the turbine exhaust outlet. The first and second plurality of passageways are defined by parting plates that extend radially outward in a spiral pattern that maintains a substantially equal distance between adjacent parting plates.

Abstract: The present disclosure is directed to a method and structure of coupling a flameholder assembly to a hot section of a propulsion system, such as an afterburning exhaust section. The propulsion system includes an outer casing and an inner casing defining a flameholder assembly disposed radially within the outer casing. The method includes providing a housing defining a retaining rod and groove into which a structural member attaches; providing a retaining plate defining an opening through which the structural member is extended; coupling the structural member to the retaining rod of the housing and the outer casing of the propulsion system; and coupling the retaining plate to the housing and the inner casing of the propulsion system such that the structural member is retained between the housing and the retaining plate.