Abstract: A guiding array (200; 600) for a flow duct system (100; 200; 300; 500) includes a series of internested annular guide vanes (202), leading edges (230) or other common parts of the guide vanes being arranged to be positioned different distances from an upstream port, which may be an imaginary cylindrical surface substantially at a heat exchanger outlet (308; 508) within a fluid handling system such as an engine module (38).

Abstract: An engine comprises an air inlet configured to receive air; a first heat exchanger arrangement arranged downstream of the air inlet, having a first heat exchanger inlet configured to receive at least a portion of the air received by the air inlet, and being configured to cool the air received by the first heat exchanger inlet; one or more turbomachinery components arranged downstream of an outlet of the first heat exchanger arrangement, and being configured to receive air; a first flow path arranged to extend from the air inlet to the first heat exchanger inlet; a second flow path arranged to extend from the air inlet to the one or more turbomachinery components, the second flow path bypassing the first heat exchanger inlet; and a flow control arrangement comprising a first portion and a second portion, the first and second portions being configured to be movable relative to one another to selectively obstruct the second flow path.

Abstract: A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle. is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

Abstract: A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

Abstract: A heat exchanger which may be used in an engine, such as a vehicle engine for an aircraft or orbital launch vehicle. is provided. The heat exchanger may be configured as generally drum-shaped with a multitude of spiral sections, each containing numerous small diameter tubes. The spiral sections may spiral inside one another. The heat exchanger may include a support structure with a plurality of mutually axially spaced hoop supports, and may incorporate an intermediate header. The heat exchanger may incorporate recycling of methanol or other antifreeze used to prevent blocking of the heat exchanger due to frost or ice formation.

Abstract: A hybrid airbreathing rocket engine module (70) comprises an air intake arrangement (62) configured to receive air and a heat exchanger arrangement (63) configured to cool air from the air intake arrangement (62); a compressor (64) configured to compress air from the heat exchanger arrangement (63); and one or more thrust chambers (65). The air intake arrangement (62), the compressor (64), the heat exchanger arrangement (63), and the one or more thrust chambers (65) are arranged generally along an axis (69) of the engine module (70). The heat exchanger arrangement (63) is arranged between the compressor (64) and the one or more thrust chambers (65).

Abstract: A shell and tube type heat exchanger comprising a shell and a tube arrangement within the shell. The tube arrangement comprises a flow tube. The flow tube furcates at a plurality of nodes along its length. The shell and tube type heat exchanger further comprises a tube matrix fluidly coupled to the flow tube.

Abstract: A rotary valve internal combustion engine has a piston connected to a crankshaft, where the piston is reciprocatable in a cylinder, and a combustion chamber being defined in part by the piston. The engine has a rotary valve rotatable in a valve housing fixed relative to the cylinder, the rotary valve having a valve body containing a volume defining, in part, the combustion chamber and further having in a wall part thereof a port giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports in the valve housing. The valve body has a non-uniform radial profile along its axial length and/or about its axis of rotation to accommodate changes in the profile of the valve body during operation to maintain a substantially constant clearance between the valve body and the housing throughout the length of the valve body.

Abstract: A spark ignition rotary valve internal combustion engine includes a combustion chamber being defined in part by the piston and the combustion end of the cylinder, a valve housing fixed at an outer portion of the combustion end of the cylinder and defining a bore, and a rotary valve rotatable about a rotary valve axis in the bore in the valve housing. The rotary valve has a hollow valve body subjected to combustion gases throughout the combustion process. The rotary valve also has, in a wall part thereof, a port giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports in the valve housing. The inlet and exhaust ports are angularly offset with respect to a radial line from the center of the engine cylinder.

Abstract: A combustion engine (10) comprises a radial compressor (16) in flow communication via a flow passage (22) with a compressor-combustor array (20) radially outward of the radial compressor (16), both rotatable around a central axis (12). The compressor-combustor (20) comprises an array of rotor blades (26). The walls of the blades (26) define a plurality of chambers (28, 30). Each chamber (28, 30) has a flow inlet (32) to receive fluid from the radial compressor (16), and a flow outlet to exhaust fluid radially outwards from the compressor-combustor (20). The plurality of chambers (28, 30) comprises a first pilot combustion chamber (28a) and a second pilot combustion chamber (28b). The first pilot combustion chamber (28a) is provided with a first fuel injector (40a), and the second pilot combustion chamber (28b) is provided with a second fuel injector (40a).

Abstract: A rotary valve internal combustion engine has a piston connected to a crankshaft, where the piston is reciprocatable in a cylinder, and a combustion chamber being defined in part by the piston. The engine has a rotary valve rotatable in a valve housing fixed relative to the cylinder, the rotary valve having a valve body containing a volume defining, in part, the combustion chamber and further having in a wall part thereof a port giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports in the valve housing. The valve body has a non-uniform radial profile along its axial length and/or about its axis of rotation to accommodate changes in the profile of the valve body during operation to maintain a substantially constant clearance between the valve body and the housing throughout the length of the valve body.

Abstract: A combustion engine comprising a radial compressor in flow communication via a flow passage with an annular compressor-combustor array radially outward of the radial compressor. Both the radial compressor and compressor-combustor are co-axial with, and rotatable around, a central axis.

Abstract: An LED lamp is configured to be connected to a leakage protection switch. The LED lamp includes one or more light emitting diodes, a control circuit, a light board and an enclosure. The control circuit is configured to be coupled to the leakage protection switch by a hot connector and a neutral connector. The light board is a printed circuit board that includes a track that surrounds a light module. A branch of the hot connector is directly coupled to the track and the light module is coupled to the control circuit by a hot line and a neutral line. The enclosure supports the control circuit and the light board. When water contacts the track, at least a portion of a current flowing through the hot connector enters a ground conductor, thereby causing the leakage protection switch to electrically disconnect the LED lamp from a power supply.

Abstract: A lens and strobe light system are provided. The lens can include a base defining a cavity configured to accept one or more light sources. The lens can further include one or more lens segments disposed on the base. The one or more lens segments can be configured to direct light emitted from the one or more light sources out from the lens. The strobe light system can include a plurality of light sources, a plurality of lenses disposed on the plurality of light sources, and a controller configured to control the operation of the plurality of light sources. The plurality of lenses can be configured to direct light emitted from the plurality of light sources out from the strobe light system.

Abstract: Troffer lighting systems can include a lighting panel having one or more light sources and one or more wing portions coupled to the lighting panel. The wing portions can be configured as reflectors to reflect light emitted by the one or more light sources. The wing portions (or reflectors) can be rotatably and/or hingedly coupled to the lighting panel. The coupled wing portions can be movable between a closed and opened position relative to the lighting panel. The closed position reduces the overall size of the troffer lighting system compared to the opened position, and the system is operable while in the opened position. Method of installing a troffer lighting systems is also included.

Abstract: Troffer lighting systems can include a lighting panel having one or more light sources and one or more wing portions coupled to the lighting panel. The wing portions can be configured as reflectors to reflect light emitted by the one or more light sources. The wing portions (or reflectors) can be rotatably and/or hingedly coupled to the lighting panel. The coupled wing portions can be movable between a closed and opened position relative to the lighting panel. The closed position reduces the overall size of the troffer lighting system compared to the opened position, and the system is operable while in the opened position. Method of installing a troffer lighting systems is also included.

Abstract: Troffer lighting systems can include a lighting panel having one or more light sources and one or more wing portions coupled to the lighting panel. The wing portions can be configured as reflectors to reflect light emitted by the one or more light sources. The wing portions (or reflectors) can be rotatably and/or hingedly coupled to the lighting panel. The coupled wing portions can be movable between a closed and opened position relative to the lighting panel. The closed position reduces the overall size of the troffer lighting system compared to the opened position, and the system is operable while in the opened position. Method of installing a troffer lighting systems is also included.

Abstract: A rotary valve internal combustion engine has a piston (1) connected to a crankshaft (3) and reciprocatable in a cylinder (2), a combustion chamber 4 being defined in part by the piston. The engine has a rotary valve (5) rotatable with a close sliding fit in a valve housing (8) fixed relative to the cylinder (2), the rotary valve having a valve body containing a volume (9) defining, in part, the combustion chamber 4 and further having in a wall part (11) thereof a port (1)2 giving, during rotation of the valve, fluid communication successively to and from the combustion chamber via inlet and exhaust ports (13), (14) in the valve housing. The rotary valve and the valve housing are both formed of aluminum.

Abstract: With reference to FIG.

Abstract: A lens and strobe light system are provided. The lens can include a base defining a cavity configured to accept one or more light sources. The lens can further include one or more lens segments disposed on the base. The one or more lens segments can be configured to direct light emitted from the one or more light sources out from the lens. The strobe light system can include a plurality of light sources, a plurality of lenses disposed on the plurality of light sources, and a controller configured to control the operation of the plurality of light sources. The plurality of lenses can be configured to direct light emitted from the plurality of light sources out from the strobe light system.