Jansen's Aircraft Systems Controls, Inc.

Other

Honeywell International Inc.

Jansen's Aircraft System Controls, Inc.

Harvey B Jansen

John F Calleja

David K Shields

Rickie P Western

Schuyler V McElrath

Jerame James Powell

Bruce Anson

Kevin W Deutscher

David G Hayward

Mohamad Hanif Y Vhora

Matthew C Caspermeyer

Raymond A Forrester, Jr

Craig S Jansen

An equilibrating flow distributor for a gas turbine engine includes a balancing valve and multiple flow dividers, each with a movable valve or divider member. The balancing valve has an inlet receiving media at a first pressure area and an outlet defining a plurality of first metering orifices. The valve member defines at least one second metering orifice receiving the media at a second pressure area. Each flow divider has an inlet receiving the media through an associated one of the first metering orifices at a third pressure area and an outlet defining one of a plurality of third metering orifices receiving the media at a fourth pressure area. Each flow divider has a second pressure area in communication with second pressure area of the balancing valve. Flow through the fourth pressure area of each flow divider is substantially the same.

Equilibrating flow distributor

A sealed solenoid provides an improved actuator for valves and other devices, particular such devices used in extreme environments and/or with corrosive media. For example, the improved solenoid construction can be used to drive a precision flow control valve used in air and space applications, such as to control fuel and oxidizer combustion media in rocket and other thrust components. The solenoid is retained in a solenoid retainer to which is attached a rigid barrier that isolates the solenoid pole piece and coil from the media. A clapper disposed outside the barrier from the solenoid serves as the armature, receiving magnetic flux from the solenoid through the barrier without interference from the barrier. The barrier may be extremely thin and magnetically inert.

Sealed solenoid and solenoid valve

A pressure regulator includes a pressurized fluid, direct-drive, balanced dual poppet valve assembly that requires no dynamic seals and is pressure balanced. Each poppet has a knife edge that creates a bubble-tight seal against a cooperating seat. The sealing knife edge of one poppet faces into the pressure, and the sealing knife edge of the other poppet faces away from the pressure. The pressure balance negates performance impact of high or low fluid pressure. Furthermore, the design provides for a controlled depth of deformation by the sealing knife edges of the poppets into the soft surfaces of the seats. With this arrangement, no dynamic seals are required, reducing the friction to a very low value. The valve assembly is actuated by solenoid that is optimized for light weight, high speed response, and low power consumption. The solenoid is designed to be immersed and operated within the pressurized fluid.

GHe solenoid operated pressure regulator and gas release manifold

A servomechanism has a jet pipe mounted by a flexure pivot driven by an electromagnet to control the position of the jet pipe. A fixed seal tube surrounds the armature and keeps the coil isolated and dry. The flexure pivot has two parts that can move with respect to one another. The jet pipe can be fixed with respect to one part and movable with respect to the other such that when the electromagnet armature moves pivotal motion is imparted to the jet pipe. A multi-port jet receiver receives media from the jet pipe in different orifices dependent upon armature position. That in turn can extend or retract an actuator, such as a piston, depending upon which receiver orifice receives greater pressure. A feedback mechanism can link the actuator to the jet pipe to provide feedback input used to improve the accuracy of the device.

Jet pipe servo with flexure pivot

A combined fuel and purge air valve for a turbine engine has an onboard residual fuel reservoir to relieve pressure transients in the fuel circuit during purge air mode operation. The fuel reservoir also operates to effectively seal the fuel circuit with fuel present in the valve chamber by venting any purge air that should happen to leak past the primary seals. A 3-way spool valve controls the transition between start-up and sustained fuel operation modes as well as the purge air operation mode. A movable shuttle controls the communication of the fuel circuit with the fuel reservoir and ensures that the fuel reservoir is open in the purge air mode and closed off in the fuel modes. Pilot air activates the shuttle and spool valve and fuel pressure provides biasing forces. Fuel is distributed through an array of outlet ports, and the valve is cooled by an integral coolant jacket.

Combining valve with fuel relief and sealing

A device and system for monitoring and controlling the flow media through a flow circuit, for example, the flow of coolant through a coolant circuit of a turbine engine fuel system, measures flow rates at the supply and return sides of the circuit and compares the measured flow rates against a threshold flow rate difference to detect the presence of a flow leak condition. Upon detecting a leak condition, the controller automatically operates a flow control valve to shut off flow to the flow circuit for repair of the leak or other low flow condition. The controller can also include components for measuring the temperate of the flow media at one or both of the supply and return sides of the circuit. The measured temperature signals can be processed to detect a high or low temperature condition. Upon detecting a low temperature condition, the controller automatically reduces the flow rate of the flow media until the condition has been corrected.

Flow controller and monitoring system

An active combustion control device provides modulated fuel flow to the combustor of a turbine engine to mitigate combustion instability. The device includes a valve unit and an electronic valve driver controlling translation and rotation components in the valve unit that drive a metering member having a modulating end. The axial position and rotation of the end geometries relative to static flow ports inside the valve unit modulate the fuel flowing from the valve unit to the combustor atomizer. The amplitude and frequency of the modulated fuel flow match that of the instable combustor fuel flow and the phase is offset by 180 degrees so that the resultant fuel flow is at or near a stable state.

Active combustion control for turbine engine

A fuel manifold for turbine engines, such as the large turbines used for generating electrical power, has a housing with straight internal porting for routing fuel and purge media streams to the combustion area of the turbine. A pressure balanced fuel valve regulates fuel using a poppet actuator. A piston section of the actuator dynamically seals off actuation pressure from the fuel. A valve section of the actuator dynamically seals off a vented area from the fuel and regulates fuel flow through the valve. The piston section has internal porting to a collector tube within the vented area for directing media leaked past the piston seal(s) to a vent port, and thereby prevent mixing of the fuel and actuation media.

Fuel manifold for turbine

A variable guide vane actuator for positioning the guide vanes of a turbine engine in a hypersonic missile uses compressor exhaust to drive a linked, floating piston assembly that is coupled to the guide vanes. The relatively low pressure compressor exhaust is metered by a valve to drive the piston arrangement to accurately position the guide vanes in proportion to the input control signal. Reliability and accuracy gains are achieved by inhibiting the effects of vibration and thermal distortion through the elimination of piston/bore contact, the use of a rigid, cantilevered mounting arrangement and cooling with the pre-combusted liquid fuel.

Variable guide vane actuator with thermal management

The fuel system of a dual fuel turbine includes a flow control valve having a metering purge valve that in one state directly meters fuel to injectors of the turbine, in another state closes of fuel flow and passes purge air to the injectors and in another state positively closes of flow of both fuel and purge air. The metering purge valve is a pressure compensated spool valve that has a unique cross-ported interchange that passes fuel from the inlet through the spool to the metering edge. The direct metering of the valve to the injectors eliminates the need for additional shut off valves, and if used with a combining valve having an integral distributor section metering fuel to multiple injectors, the need for a separate flow divider is also eliminated. The valve can be actively cooled by dedicated coolant lines or lines shared with other flow control components such as additional metering valves for either the primary or secondary fuel.

Fuel control system with metering purge valve for dual fuel turbine

Variable guide vane actuator

A reverse flow valve for metering high pressure gaseous media, such as ignition media to the injectors of a scramjet engine in a hyerpsonic flight vehicle, has a metering member that moves parallel to the flow direction of the metered media and throttles the valve in a direction counter to the flow direction. This reduces side loading on the metering member and permits the use of a lighter and smaller actuating mechanism. The metering member can be a pintle having a uniquely configured pintle seat providing bubble tight shut off of the inlet flow without effecting the critical flow contour of the media. The pintle can be driven by a piston that is responsive to push-pull forces of pressurized drive fluid under servo control. The drive fluid is isolated from the gaseous media by a primary seal, which can be seated on the piston without deformation by a seal retainer. The drive fluid can be fuel diverted from the sustained combustion fuel system of the vehicle so that a separate hydraulic system is not required.

Reverse flow fueldraulic valve

A system for maintaining pressure in the liquid fuel tank of a high-speed flight vehicle, such as a hypersonic flight, scramjet powered air and space vehicle, manages tank ullage using a pressure regulator coupled to the fuel tank that supplies pressurized gaseous media into the fuel tank ullage based on the internal pressure of the tank. The regulator has an on-board controller that processes tank pressure input to deliver a pulse-width modulated input signal to the coil of the on-board solenoid metering assembly. Energizing the coil drives the metering valve open against spring force. The metering assembly is contained in a removable cartridge that has a floating valve guide that is held stationary by bias of the spring against the metering valve. The metering valve has a separate valve seat that mates with the metering orifice of a flow nozzle. The valve seat can have higher compressibility than a clapper part of the valve to effect a better seal, with its compression being controlled by contact of the clapper with a rigid stop surface of the flow nozzle.

Ullage pressure regulator

A multi-channel, multi-phase flow metering valve has multiple pintle valves for metering liquid media through each valve channel. The valve channels have venturi passageways that alone, or in cooperation with the pintles, cause the local pressure of the media to fall below its saturated vapor pressure and allow the liquid media to change phase. The cavitation creates a gaseous region, formed from one or many discrete cavities, in the media within valve channels that effectively isolates the pressures in the upstream and downstream parts of the valve channels to reduce the affects of input pressure fluctuations in the output media. The valve components, particularly the modules defining the venturi passageways, are made of a high-strength material to better resist pitting and other surface erosion from sonic shock associated with the collapse of the gaseous cavities.

Multi-channel, multi-phase flow metering valve

A water cooled valve is provided in the form of a check valve, an air purge valve, a distributor valve, a combination air purge and distributor valve and the like for use in the liquid fuel system of a gas turbine. A movable valve member controls the flow of fluid through the valve's fuel circuit. A separate cooling circuit circulates cooling water through the valve near or alongside the valve member. The water is of a lower temperature than the high temperature liquid fuel, and thereby carries away heat transferred to the valve by the fuel. In one form, the cooling circuit is formed in part by a helical groove in the periphery the valve body housing the valve member. A sealed water jacket surrounds the valve body and has dedicated supply and return ports for coupling the valve to a water supply via water lines. The water ports are positioned tangentially to induce swirling flow inside the valve.

Growing community of inventors

Mesa, AZ, United States of America

Harvey B Jansen