Abstract: A heat exchange device comprising a fluid flow passage having a plurality of successive segments in fluid flow communication with one another, the segments being adapted to maintain a developing flow therein and thereby improve heat transfer.

Abstract: A heat exchange device comprising a fluid flow passage having a plurality of successive segments in fluid flow communication with one another, the segments being adapted to maintain a developing flow therein and thereby improve heat transfer.

Abstract: A method of providing an outside rotor electric machine having a reduced radial air gap variation across an axial length of the air gap, the machine including a rotor having a cylindrical elongated portion supporting magnets and a flange extending at least partially radially from a rotating shaft, the method comprising increasing a radial deflection of the elongated portion in proximity of the flange by connecting the elongated portion to the flange through a radial spring having a stiffness lower than that of the elongated portion.

Abstract: A heat exchange device comprising a fluid flow passage having a plurality of successive segments in fluid flow communication with one another, the segments being adapted to maintain a developing flow therein and thereby improve heat transfer.

Abstract: An aircraft propulsion system comprises a power plant driving a number of outboard propulsion units to propel a fixed wing aircraft.

Abstract: A method of providing an outside rotor electric machine having a reduced radial air gap variation across an axial length of the air gap, the machine including a rotor having a cylindrical elongated portion supporting magnets and a flange extending at least partially radially from a rotating shaft, the method comprising increasing a radial deflection of the elongated portion in proximity of the flange by connecting the elongated portion to the flange through a radial spring having a stiffness lower than that of the elongated portion.

Abstract: The invention provides a method and apparatus for controlling a machine in which the magnetic flux emanating from a rotor is selectively diverted to a second path in the stator which bypasses the winding or windings so as to magnetically de-couple the winding or windings from the rotor.

Abstract: An electric machine including an outside rotor having a first member providing a magnetic path between adjacent ones of a circumferential array of magnets, and a second member surrounding and inducing a compression load in the first member.

Abstract: The invention provides a method and apparatus for controlling a machine in which the magnetic flux emanating from a rotor is selectively diverted to a second path in the stator which bypasses the winding or windings so as to magnetically de-couple the winding or windings from the rotor.

Abstract: A method of manufacturing a composite wall with an open cell metal foam core layer bonded to an inner cladding layer and an outer cladding layer. The method involves: creating a core substrate of open cell gas permeable foam in a chosen shape; impregnating the open cell foam substrate with metal vapour and depositing a porous layer of metal on exposed internal and external surfaces of the substrate thereby forming the open cell metal foam core through metal vapour deposition; and forming the inner and outer cladding layers upon the metal foam core through spray application of metal or ceramic.

Abstract: The invention provides a method and apparatus for controlling a machine in which the magnetic flux emanating from a rotor is selectively diverted to a second path in the stator which bypasses the winding or windings so as to magnetically de-couple the winding or windings from the rotor.

Abstract: An aircraft propulsion system comprises a power plant driving a number of outboard propulsion units to propel a fixed wing aircraft.

Abstract: A method of manufacturing a composite wall with an open cell metal foam core layer bonded to an inner cladding layer and an outer cladding layer. The method involves: creating a core substrate of open cell gas permeable foam in a chosen shape; impregnating the open cell foam substrate with metal vapour and depositing a porous layer of metal on exposed internal and external surfaces of the substrate thereby forming the open cell metal foam core through metal vapour deposition; and forming the inner and outer cladding layers upon the metal foam core through spray application of metal or ceramic.

Abstract: The invention provides a method and apparatus for controlling a machine in which the magnetic flux emanating from a rotor is selectively diverted to a second path in the stator which bypasses the winding or windings so as to magnetically de-couple the winding or windings from the rotor.

Abstract: A method of manufacturing a composite wall with an open cell metal foam core layer bonded to an inner cladding layer and an outer cladding layer. The method involves: creating a core substrate of open cell gas permeable foam in a chosen shape; impregnating the open cell foam substrate with metal vapour and depositing a porous layer of metal on exposed internal and external surfaces of the substrate thereby forming the open cell metal foam core through metal vapour deposition; and forming the inner and outer cladding layers upon the metal foam core through spray application of metal or ceramic.