Abstract: An apparatus for treating a pavement surface with a plurality of layers in a single pass, including: a chassis having a forward end and a rear end; a plurality of rolling means spaced longitudinally along the chassis for supporting the chassis so it can roll along a particular direction of advance; a powerplant for moving the chassis along the direction of advance; a first storage tank mounted on the chassis for containing bituminous sealant; a second storage tank mounted on the chassis for containing bituminous emulsion; a main hopper mounted on the chassis for storing aggregate particles; a first mechanism in flow communication with the first storage tank for applying a layer of bituminous sealant at a predetermined temperature and application rate on the pavement surface; a second mechanism in flow communication with the second storage tank for applying a layer of bituminous emulsion at a predetermined temperature and application rate on the layer of bituminous sealant, wherein a thermal reaction occurs be

Abstract: An apparatus and method of determining remaining capacity in a battery, including the following steps: detecting the presence of a battery within one of a plurality of specified terminals; automatically initiating a timed pulse load test on the battery upon detection in a terminal; continuously passing current from the battery through a specified resistive load for the terminal; measuring a voltage of the battery while under the resistive load; comparing the measured voltage to a discharge voltage profile of the battery; and, computing the measured voltage as a percent of remaining battery capacity.

Abstract: A system and method of removing a predetermined amount of material from a bottom portion of a dovetail slot in a gas turbine engine disk, including the steps of configuring a designated flow path through the dovetail slot and providing a flow of abrasive media through the flow path a designated number of cycles so that a substantially uniform amount of material is removed from the dovetail slot bottom portion. The method also includes the step of sealing a pressure surface of the dovetail slot to prevent the abrasive media from flowing thereagainst.

Abstract: A support assembly for a gas turbine engine combustor including an inner liner and an inner casing spaced therefrom, wherein a longitudinal centerline axis extends through the gas turbine engine. The support assembly includes an annular inner support cone located adjacent an aft end of said inner liner, an annular nozzle support connected to the inner support cone, and a plurality of support members connected at a first end to a forward end of the inner liner and connected at a second end to the inner support cone.

Abstract: An apparatus and method for inspecting a dovetail slot of a gas turbine engine disk, including: a first pin member fixed in a stationary position; a second pin member having the ability to move between a first position and a second position, wherein the second pin member is oriented substantially parallel to the first pin member; a member actuable between a first position and a second position, wherein the member functions to automatically position the first and second pin members in a predetermined position within the dovetail slot when in the second member position; a first probe for measuring a distance between the first and second pin members when in the predetermined dovetail slot position; and, at least one plate member forming a base to which the first pin member, the second pin member, the actuable member, and the first probe are assembled in a predetermined manner.

Abstract: A counterrotatable booster compressor assembly for a gas turbine engine having a counterrotatable fan section with a first fan blade row connected to a first drive shaft and a second fan blade row axially spaced from the first fan blade row and connected to a second drive shaft, the counterrotatable booster compressor assembly including a first compressor blade row connected to the first drive shaft and a second compressor blade row interdigitated with the first compressor blade row and connected to the second drive shaft. A portion of each fan blade of the second fan blade row extends through a flowpath of the counterrotatable booster compressor so as to function as a compressor blade in the second compressor blade row.

Abstract: A device for defining a designated flow path through a dovetail slot in a gas turbine engine disk, wherein a longitudinal axis extends through the dovetail slot. The device includes a first portion having a bottom section contoured to form the flow path in conjunction with a surface of a bottom portion of the dovetail slot and a second portion shaped to be removably retained in a pressure surface portion of the dovetail slot.

Abstract: A combustor for a gas turbine engine having a longitudinal axis extending therethrough, including an inner liner, an outer liner spaced radially from the inner liner, an annular dome connected to the inner and outer liners, a plurality of air/fuel mixers connected to the dome and circumferentially spaced within the dome, an outer cowl connected to the outer liner, and an inner cowl connected to the inner liner, wherein a combustion chamber is formed by the inner liner, the outer liner and the dome. The dome further includes a first end connected to a liner of the combustor, a second end spaced radially from the first end, a first portion extending rearwardly from the first end adjacent the liner, a second portion extending rearwardly from the second end and flaring radially outward from the longitudinal axis, and a nonlinear third portion connecting the first and second dome portions.

Abstract: An igniter tube for a gas turbine engine combustor has an inner surface, an outer surface, and a longitudinal axis therethrough. More specifically, the igniter tube includes: a first portion positioned within a port of a liner for the combustor, the first portion having an inner surface with an inner diameter and an outer surface with an outer diameter; a second portion located adjacent the first portion, the second portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein the second portion outer diameter increases from the first portion outer diameter at a first end to a predetermined outer diameter at a second end; and, a third portion located adjacent the second portion, the third portion having an inner surface with an inner diameter and an outer surface with an outer diameter, wherein the third portion outer diameter is substantially the same as the predetermined outer diameter.

Abstract: A turbine blade for a gas turbine engine, including an airfoil and integral dovetail for mounting the airfoil along a radial axis to a rotor disk inboard of a turbine shroud. The airfoil further includes: first and second sidewalls joined together at a leading edge and a trailing edge, where the first and second sidewalls extend from a root disposed adjacent the dovetail to a tip plate for channeling combustion gases thereover; and, at least one tip rib extending outwardly from the tip plate between the leading and trailing edges. The tip rib is oriented so that an axis extending longitudinally therethrough is at an angle with respect to the radial axis for at least a designated portion of an axial length of the turbine blade. Such angle may be substantially the same across the designated portion or may vary thereacross.

Abstract: A counterrotatable booster compressor assembly for a gas turbine engine having a counterrotatable fan section with a first fan blade row connected to a first drive shaft and a second fan blade row axially spaced from the first fan blade row and connected to a second drive shaft. The counterrotatable booster compressor assembly includes a first compressor blade row connected to the first drive shaft, a plurality of fan shaft extensions connected to the second drive shaft for driving the second fan blade row, and at least one compressor blade integral with each fan shaft extension so as to form a second compressor blade row interdigitated with the first compressor blade row.

Abstract: An annular one-piece liner for a combustor of a gas turbine engine, including a first end adjacent to an upstream end of the combustor, a second end adjacent to a downstream end of the combustor, and a plurality of corrugations between the first and second ends, each corrugation having an amplitude and a wavelength between an adjacent corrugation, wherein the amplitude of the corrugations and/or the wavelength between adjacent corrugations is variable from the first end to the second end.

Abstract: A turbine nozzle assembly for a gas turbine engine, including: a plurality of segments joined together to form an outer band; a plurality of segments joined together to form an inner band; at least one airfoil positioned between the outer and inner bands; a leaf seal attached to each inner band segment by at least one pin member; and, a leaf seal attached to each outer band segment by at least one pin member. Each of the inner band segments includes a protrusion extending from a surface thereof so as to provide balanced support to the corresponding leaf seal in conjunction with the pin members. Each of the inner band segments further includes a first portion having a flange extending therefrom, a second portion opposite the first portion, a first end, and a second end opposite the first end, wherein the surface extends between the first and second ends and the first and second portions.

Abstract: An airfoil for a turbine nozzle assembly of a gas turbine engine includes an outer side wall, an inner side wall, a leading edge extending from the outer side wall to the inner side wall, a trailing edge extending from the outer side wall to the inner side wall, a concave surface extending from the leading edge to the trailing edge on a pressure side of the airfoil, a convex surface extending from the leading edge to the trailing edge on a suction side of the airfoil, an outer cooling slot, an inner cooling slot, and at least one middle cooling slot formed in the concave side of the airfoil adjacent the trailing edge.

Abstract: A method and apparatus of treating a pavement surface, including the steps of: applying a layer of bituminous sealant at a predetermined temperature and application rate on the pavement surface; applying a layer of bituminous emulsion at a predetermined temperature and application rate on the first of bituminous sealant, wherein a thermal reaction occurs between the bituminous sealant and the bituminous emulsion so as to accelerate a material break and cure time for said layers; and, providing a layer of aggregate particles at a predetermined application rate on the layers of bituminous sealant and bituminous emulsion during the thermal reaction. The steps of the method are performed successively along a particular direction of advance at a rate which permits them to be accomplished within a predetermined time period. Additional steps of compacting the layers and/or applying an asphalt layer thereon may also be performed.

Abstract: A hand-held laser detector clamp apparatus is provided for use in attachment against virtually all available sizes and shapes of members found on construction sites and in surveying applications. A reversible jaw adapter that contains both a “flat” face and a “ramped” face is attached to a travelling clamp jaw with a clamp lead screw. The reversible jaw adapter can be used with either its flat face out or its ramped face out. A detector bracket and detector screw are also provided as part of the clamp apparatus to hold a hand-held laser detector in place. If the flat face of the reversible jaw adapter is oriented so as to be “out,” then the clamp apparatus will generally be most useable in attaching to flat surfaces, such as rectangular rods or boards.

Abstract: A device for collecting cervicovaginal cells, including a first end portion for contacting an ectocervical region and obtaining a sampling of cells therefrom, a second end portion opposite the first end portion, and an elongated middle portion connecting the first and second end portions. A region is formed on the device that provides a designated edge against which an endocervical brush is able to be rubbed for harvesting of cells from the endocervical brush in a vial of preservative.

Abstract: An improved photocell configuration is provided to create a more accurate laser receiver that not only is very accurate and flexible in its operational capabilities, but also can greatly reduce the effect of rotational offset due to shading of the photocell. In one embodiment, a very long photocell is provided in which multiple split-cells are used to present a geometry that will tend to negate some of the effects of shading. The shading effects are minimized by having a different active photocell area along each vertical edge of the photocell. In another embodiment, a "segmented" photocell is used, in which the split-cell design of a long photocell is also divided into vertical segments. These segments can be re-configured so that alternating segments comprise a mirror image about the longitudinal of the long photocell. Such an arrangement tends to reduce the effect of rotational offset due to shading to an extremely small percentage of error.

Abstract: An antenna operable in two disparate frequency bands is disclosed as including a first quadrifilar helix having four conductive elements arranged helically to define a cylinder of substantially constant radius, where the first quadrifilar helix is formed of two bifilar helices arranged orthogonally and excited in phase quadrature. A quadrature feed network is connected to the first quadrifilar helix, wherein one end of a coupling element thereof is connected to a first end of each conductive element. The quadrature feed network also includes a first feedpoint for operation of the antenna with circular polarization in a first frequency band and a second feedpoint for operation of the antenna with linear polarization in a second frequency band.

Abstract: A communication system is disclosed as including a plurality of mobile radio telephones, a control unit for transmitting a signaling message to an intended mobile radio telephone, and at least one paging channel through which the control unit is able to transmit the signaling message at varying margin levels. The control unit initially transmits the signaling message at a specified margin level for a predetermined number of attempts and progressively continues to transmit the signaling message at margin levels greater than the specified margin level until the intended mobile radio telephone receives the signaling message.