Abstract: The temperature measurement system includes a thermocouple probe, a non-transitory computer-readable storage medium storing processor-executable instructions, and a processor. The processor-executable instructions are configured to enable to processor to form a model of the thermocouple probe, perform several computational fluid dynamic (CFD) analyses of the thermocouple probe using a predetermined Reynolds number, output a first temperature (T1CFD) and a second temperature (T2CFD) at the junctions for each simulation, apply a linear regression between the T1CFD and the T2CFD, output a slope from the linear regression, and output a corrected gas temperature with at least one algorithm.

Abstract: Pyrolysis systems and methods of generating hydrogen gas from a hydrocarbon gas. The pyrolysis systems include a solar thermal reactor configured to heat a gaseous hydrocarbon stream, such as methane, to its dissociation temperature. A supersonic turbomachine disposed in a housing receives resulting carbon particles and hydrogen gas from the solar thermal reactor and prevents dissociated carbon from forming deposits on an interior wall of the housing. A particulate separator is located downstream of the supersonic turbomachine to separate the carbon particles from the remaining hydrogen gas.

Abstract: A turbine row for an axial or mixed-flow fluid machine may include an airfoil, having a leading edge, a trailing edge, a pressure surface and a suction surface. The turbine row may further include two endwalls, extending from upstream of the airfoil leading edge to downstream of the airfoil trailing edge. The endwalls may define an inlet upstream of the leading edge of the airfoil and an outlet downstream of the airfoil. The endwalls have a contoured geometry which provides an increase in channel height from the inlet to the outlet and guarantees a throat area larger than the area of the inlet.

Abstract: A flow measurement apparatus comprising an elongated mounting stem having an inner stem cavity, the mounting stem configured to be mounted in an area of flow to be measured. A probe housing is mounted to an outer surface of the mounting stem and positioned on an upstream side of the mounting stem. The probe housing has a first hole near a center point of the housing and a second, third and fourth hole positioned near the perimeter of the housing. A fifth hole is located on a downstream side of the mounting stem. At least five pressure sensors and a plurality of pressure tapping tubes connecting the holes to the corresponding pressure sensors are included.

Abstract: A flow measurement apparatus comprising an elongated mounting stem having an inner stem cavity, the mounting stem configured to be mounted in an area of flow to be measured. A probe housing is mounted to an outer surface of the mounting stem and positioned on an upstream side of the mounting stem. The probe housing has a first hole near a center point of the housing and a second, third and fourth hole positioned near the perimeter of the housing. A fifth hole is located on a downstream side of the mounting stem. At least five pressure sensors and a plurality of pressure tapping tubes connecting the holes to the corresponding pressure sensors are included.

Abstract: A method for modeling at least one portion of a bathtub of a blade, the method including parametrizing a volume representing the bathtub portion as a set of markers extending from a reference transverse surface of the blade, the blade physically including the markers, and each marker associated with an elementary surface selected among a plurality of elementary surfaces forming a partition of at least one portion of the reference transverse surface; and defined by a marker height relative to the reference surface; determining optimized values of the marker heights relative to a given aerodynamic and/or thermal criterion; reproducing, on an interface of the device, the values thus determined.

Abstract: A tip structure for a turbine blade comprises a tip surface of an airfoil that extends from a leading edge to a trailing edge and from a pressure side to a suction side of the airfoil. A suction side rail protrudes from the tip surface and comprises: a trailing portion extending flush with the suction side of the airfoil from an origination location at or near the trailing edge to an intermediate location on the suction side; and a leading portion extending from the intermediate location across the tip surface so as to create a suction side shelf region between the leading portion of the suction side rail and the suction side of the airfoil.

Abstract: The invention relates to a turbine blade (1) of a turbine engine including an upper surface (11), a lower surface (12), a leading edge (13), a trailing edge (14), and a squealer tip (2) at the top thereof, wherein said squealer tip (2) is defined by a rim (2a) and comprises at least one inner rib (3) that is spaced apart from the rim (2a) defining the squealer tip (2). The invention is characterized in that said inner rib (3) is shaped to define, inside the squealer tip, a cavity (4) inside of which the passage of leak flows (5) is limited, wherein an upstream opening (131) is made in the rim (2a) at the leading edge (13), and a downstream opening (141) is made in the rim (2a) at the trailing edge (14).

Abstract: A tip structure for a turbine blade comprises a tip surface of an airfoil that extends from a leading edge to a trailing edge and from a pressure side to a suction side of the airfoil. A suction side rail protrudes from the tip surface and comprises: a trailing portion extending flush with the suction side of the airfoil from an origination location at or near the trailing edge to an intermediate location on the suction side; and a leading portion extending from the intermediate location across the tip surface so as to create a suction side shelf region between the leading portion of the suction side rail and the suction side of the airfoil.

Abstract: The invention relates to a turbine blade (1) of a turbine engine including an upper surface (11), a lower surface (12), a leading edge (13), a trailing edge (14), and a squealer tip (2) at the top thereof, wherein said squealer tip (2) is defined by a rim (2a) and comprises at least one inner rib (3) that is spaced apart from the rim (2a) defining the squealer tip (2). The invention is characterized in that said inner rib (3) is shaped to define, inside the squealer tip, a cavity (4) inside of which the passage of leak flows (5) is limited, wherein an upstream opening (131) is made in the rim (2a) at the leading edge (13), and a downstream opening (141) is made in the rim (2a) at the trailing edge (14).

Abstract: A method for modeling at least one portion of a bathtub of a blade, the method including parametrizing a volume representing the bathtub portion as a set of markers extending from a reference transverse surface of the blade, the blade physically including the markers, and each marker associated with an elementary surface selected among a plurality of elementary surfaces forming a partition of at least one portion of the reference transverse surface; and defined by a marker height relative to the reference surface; determining optimized values of the marker heights relative to a given aerodynamic and/or thermal criterion; reproducing, on an interface of the device, the values thus determined.

Abstract: A method and a device for power extraction by means of an axial fluid machine, in an annulus tube comprising at least a rotatable inner wall (308, 408, 501) and/or a rotatable outer wall (409, 502) over which a swirling fluid is flowing with a velocity (420). According to this method, the said fluid creates tangential force (417) on at least one of said rotatable walls (308, 408, 501 and 502) of the axial fluid machine and creates power of that said shaft (309, 414, 505 and/or 506).

Abstract: A system and method for detecting a damaged magnetoresistive sensor includes measuring a median DiffPN value of a group of GMR sensors on a module, the sensors characterized as having been deposited on a same wafer and having been lapped as a single unit; comparing the DiffPN values to the median; determining that physical and/or magnetic damage has occurred to an individual sensor if the difference in the DiffPN value of the individual sensor from the median is greater than a statistically predetermined value for the group of sensors; where the difference is at least one times the average of the standard deviations of a large number of normal modules or the average of the standard deviations of a large number of modules, wherein at least the largest and the smallest DiffPN value within the module is not included in the calculation of the module's standard deviation.

Abstract: A system and method for detecting a damaged magnetoresistive sensor includes measuring a median DiffPN value of a group of GMR sensors on a module, the sensors characterized as having been deposited on a same wafer and having been lapped as a single unit; comparing the DiffPN values to the median; determining that physical and/or magnetic damage has occurred to an individual sensor if the difference in the DiffPN value of the individual sensor from the median is greater than a statistically predetermined value for the group of sensors; where the difference is at least one times the average of the standard deviations of a large number of normal modules or the average of the standard deviations of a large number of modules, wherein at least the largest and the smallest DiffPN value within the module is not included in the calculation of the module's standard deviation.

Abstract: In one embodiment, a method for detecting a damaged magnetoresistive sensor includes analyzing readback signals of a plurality of sensors each being positioned over data tracks on a passing magnetic medium; determining whether at least one of the readback signals is out of phase with respect to the other readback signals, and/or whether at least one of the readback signals has a significantly lower amplitude that the other readback signals. Additional methods are also presented.

Abstract: In one embodiment, a method for detecting a damaged magnetoresistive sensor includes analyzing readback signals of a plurality of sensors each being positioned over data tracks on a passing magnetic medium; determining whether at least one of the readback signals is out of phase with respect to the other readback signals, and/or whether at least one of the readback signals has a significantly lower amplitude that the other readback signals. Additional methods are also presented.