Patent application number | Description | Published |
20100031658 | GAS TURBINE FUEL METERING UNIT - A fuel system for a turbine engine is provided. The fuel system includes a positive displacement pump driven by an electric motor. The pump is rotated in a first direction to deliver fuel to the turbine engine, and a second direction for evacuating fuel from the turbine engine. A shut-off check valve is open in a first direction in response to a first differential pressure created by the pump in the first direction. The shut-off check valve is biased to a closed position when the pump is rotating in the second direction. An ecology check valve is biased to a closed position in the first direction and open in the second direction in response to a second differential pressure created by the pump. The check valves open and close automatically in response to the pressures generated by the positive displacement pump in each of the first and second rotational directions. In this manner, simple, reliable valves are utilized to regulate the flow of fuel in the fuel system. | 02-11-2010 |
20100044605 | PIEZOELECTRIC BENDING ELEMENT ACTUATOR FOR SERVO VALVE - A valve assembly includes a valve housing. A valve body is movable within the housing. The valve body has a land to selectively block or communicate a supply port to an outlet. A piezoelectric bending element actuator moves the valve body to selectively communicate the supply port to the outlet port. | 02-25-2010 |
20100326085 | LIGHTWEIGHT START SYSTEM FOR A GAS TURBINE ENGINE - A start system for an engine package with a high spool includes a power source which generates air. A nozzle system in fluid communication with the power source, the nozzle system operable to direct air toward the high spool to spin-up the high spool. | 12-30-2010 |
20110289931 | GAS TURBINE FUEL METERING UNIT - A fuel system for a turbine engine is provided. The fuel system includes a positive displacement pump driven by an electric motor. The pump is rotated in a first direction to deliver fuel to the turbine engine, and a second direction for evacuating fuel from the turbine engine. A shut-off check valve is open in a first direction in response to a first differential pressure created by the pump in the first direction. The shut-off check valve is biased to a closed position when the pump is rotating in the second direction. An ecology check valve is biased to a closed position in the first direction and open in the second direction in response to a second differential pressure created by the pump. The check valves open and close automatically in response to the pressures generated by the positive displacement pump in each of the first and second rotational directions. In this manner, simple, reliable valves are utilized to regulate the flow of fuel in the fuel system. | 12-01-2011 |
20110307192 | MASS FLOW METERING SYSTEM FOR AIRCRAFT APPLICATIONS - A method of calculating fuel flow across an aircraft flight cycle includes the steps of providing a flow meter, and an alternative method of measuring fuel flow. The flow meter is used to calculate fuel flow over a portion of a flight cycle of an aircraft equipped with the system. Fuel flow is calculated with the alternative measurement system at least during maximum power flow portions of the flight cycle. A system is configured for performing this method. A method of calculating mass flow across a fuel metering unit uses fuel flow volume measurements and information about the fuel to reach a mass flow measurement. | 12-15-2011 |
20120255276 | LOAD LIMITED ACTUATOR - An actuator includes a first piston and a second piston. The first piston has a piston ring that separates a first chamber from a second chamber of the actuator. The first piston has an interior chamber that communicates with the first chamber. The second piston is disposed within the interior chamber of the first piston so as to be movable with respect thereto. The second piston has a surface that interfaces with the second chamber. | 10-11-2012 |
Patent application number | Description | Published |
20120159880 | Structural Glazing Spacer - A method of preparing a window module includes providing a metal frame having a first major surface, applying a structural glazing tape to the first major surface of the metal frame, and positioning a glass panel overtop the structural glazing tape. The structural glazing tape includes a polymer foam tape having first and second major surfaces, an adhesive layer overlying the first major surface for bonding the structural glazing tape to the structural frame, and a release layer overlying the second major surface. The method further includes filling a channel defined by the glass panel, the metal frame, and the structural glazing tape with a curable sealant, and curing the sealant to bond the glass panel and the metal frame together. | 06-28-2012 |
20140345782 | STRUCTURAL GLAZING SPACER - A method of preparing a window module includes providing a metal frame having a first major surface, applying a structural glazing tape to the first major surface of the metal frame, and positioning a glass panel overtop the structural glazing tape. The structural glazing tape includes a polymer foam tape having first and second major surfaces, an adhesive layer overlying the first major surface for bonding the structural glazing tape to the structural frame, and a release layer overlying the second major surface. The method further includes filling a channel defined by the glass panel, the metal frame, and the structural glazing tape with a curable sealant, and curing the sealant to bond the glass panel and the metal frame together. | 11-27-2014 |