Patent application number | Description | Published |
20090240412 | BRAKE CONTROL INTERLOCK LOGIC - A brake control circuit for determining if a brake command from a brake pedal is valid is provided. The brake control circuit includes at least two independent channels configured to receive data indicative of brake pedal deflection for the brake pedal, and logic circuitry operatively coupled to the at least two independent channels. The logic circuitry is configured to generate a valid brake flag when the respective channels receive data that are within a predetermined range of one another, and to generate an invalid brake flag when the respective channels receive data that are not within a predetermined range of one another. | 09-24-2009 |
20090281702 | RESOLVING STACK CLOSURE OF A POSITION CONTROLLED ELECTRIC BRAKE SYSTEM - A system, apparatus and method for resolving stack closure of a brake disk stack in a brake system is disclosed. In resolving the stack closure position, a force that can be applied by the reciprocating ram to the brake disk stack is limited, and then the reciprocating ram is commended to traverse into the brake disk stack. When the reciprocating ram contacts the brake disk stack and stops moving, the stopped position of the reciprocating ram is identified as the stack closure position. | 11-12-2009 |
20100038188 | AIRCRAFT BRAKE ACTUATION MEASUREMENT UNIT - A compact aircraft brake actuation measurement unit ( | 02-18-2010 |
20100078519 | METHOD TO DEGRADE BRAKING MODES - A system, apparatus and method of controlling a braking system of a vehicle having a plurality of rotating wheels and a plurality of brakes, each brake corresponding to one of the plurality of wheels, is provided. In controlling the brakes, an operational status of the braking system is determined. Based on the determined operational status, different feedback regulation schemes are selectively implemented to control the brake force applied by the brakes. | 04-01-2010 |
20100090058 | BRAKE SHUTOFF VALVE TEST - A system, apparatus and method of verifying operation of a vehicle fluid brake system shutoff valve is provided, wherein the shutoff valve is adapted to enable or inhibit the transmission of fluid pressure to at least one brake solenoid valve that controls operation of at least one brake actuator so as to effect wheel braking. In verifying operation of the system, the shutoff valve is commanded to inhibit the transmission of fluid pressure to the at least one brake solenoid valve, and the at least one brake solenoid valve is commanded to apply fluid pressure to the at least one brake actuator. An operational status of the shutoff valve is determined based on the absence or presence of wheel braking. | 04-15-2010 |
20100106347 | INDEPENDENT BRAKE CONTROL OF A COMMON AIRCRAFT GEAR - A brake control system for a landing gear of an aircraft is provided. The system includes a first control channel for providing brake control signals to one or more brakes on the landing gear, and a second control channel for providing brake control signals to another one or more brakes on the landing gear. At least one of the first control channel and the second control channel is configured to act as an executive in monitoring braking efforts applied by the one or more brakes as compared to braking efforts applied by the another one or more brake, and to cause the braking efforts of at least one of the one or more brakes or the another one or more brakes to be modified in an effort to equalize the braking efforts. | 04-29-2010 |
20100117447 | FAULT TOLERANT AIRCRAFT BRAKING CONTROL USING ALTERNATE WHEEL SPEED INFORMATION - A method for providing anti-skid braking control for a vehicle having a plurality of wheels, each wheel including a corresponding wheel speed sensor and brake, wherein when velocity data from at least one wheel speed sensor is lost, velocity data from a wheel speed sensor coupled to a different wheel is used as the wheel speed for the wheel with the non-operational sensor. | 05-13-2010 |
20100225503 | SYSTEM AND METHOD FOR DETECTING A DRAGGING BRAKE - Systems and methods to determine whether a brake is dragging based on post-takeoff spindown data are provided. The method comprises measuring spindown of a wheel to obtain spindown data. The spindown data is compared with a spindown envelope, and notification is provided if the spindown data indicates a wheel is spinning down outside a spindown envelope. | 09-09-2010 |
20100228430 | SYSTEM AND METHOD TO DETERMINE BRAKE PEDAL SENSOR FAILURE - Systems and methods for determining aircraft brake pedal sensor failure are provided. A brake pedal sensor and/or a brake pedal may be “failed” if brake pedal sensor readings unlikely to be generated as a result of human input are detected. The method comprises acquiring brake pedal measurements from a brake pedal sensor, determining a state of the brake pedal sensor, and providing a notification of the state. Each brake pedal measurement comprises a brake pedal deflection amount. The brake pedal sensor test algorithm may be conducted at regular intervals, in preparation for aircraft landing, at the request of a human operator, and the like. | 09-09-2010 |
20100274457 | DECELERATION CONTROLLED BRAKING - A system, apparatus and method of controlling a brake system of a vehicle having a brake input device, such as a brake pedal, a plurality of rotating wheels and a plurality of brakes, each brake of the plurality of brakes corresponding to one wheel of the plurality of wheels, is provided. In controlling the brakes, data indicative of a deflection of the brake pedal is received, and the received data is used to derive a target deceleration rate. A braking command is provided to each of the plurality of brakes, wherein the braking command is varied for each brake to regulate a deceleration rate the vehicle in accordance with the target deceleration rate. | 10-28-2010 |
20100274458 | ELECTRIC BRAKE ARCHITECTURE WITH DISSIMILAR EMERGENCY BRAKING PATH - A system, apparatus and method provide a means for controlling an electric brake actuator. An electromechanical actuator controller (EMAC) is configured to receive first data indicative of a desired braking force, second data indicative of a braking command generated by a brake input device, the second data different from said first data, and third data indicative of a braking mode. Based on the third data, the EMAC selectively uses the first data or the second data to control the actuator. | 10-28-2010 |
20100276233 | SYSTEM TO ELIMINATE ELECTRIC ACTUATOR CONTAMINATION - A system to reduce or eliminate brake actuator contamination by providing a clean air source for the actuator such that a volume of a void in the actuator can vary without introducing moisture and/or contaminants into the actuator. A movable wall moves in response to changes in the volume of the void of the actuator to compensate for the changes without drawing moisture or contaminants into the actuator housing. By reducing or eliminating actuator contamination the service life of the actuator can be extended. | 11-04-2010 |
20100276988 | DIFFERENTIAL EMERGENCY/PARK ELECTRIC BRAKE SYSTEM - A system, apparatus and method provide emergency differential braking for effecting braked steering of an aircraft. A brake input device is provided that not only allows for emergency and parking brake functions, but also enables differential braking. The brake input device (e.g., a parking and/or emergency brake lever, pedal, handle, etc.) can be used in a brake system including a brake system control unit (BSCU), one or more electro-mechanical actuator controllers (EMACs) and a brake assembly including one or more electrical actuators. Each EMAC is electrically coupled to one or more of the actuators so as to provide electrical power for driving the actuators. Each EMAC is also communicatively coupled to the BSCU so as to receive braking data therefrom. In an emergency, the input device sends braking signals directly to the brake actuators. | 11-04-2010 |
20100280725 | DISTRIBUTED PEDAL SYSTEM FOR AIRCRAFT - A braking system that can reduce wiring without sacrificing performance. The system includes a data concentrator in the form of a distributed sensor processor unit for receiving braking command signals from a plurality of sensors and, based on the command signals, generating a brake control signal to be sent to a brake system control unit via a serial connection or the like. | 11-04-2010 |
20100281967 | OVER-SPEED, ROUGH LOADS AND HARD LANDING DETECTION SYSTEM - A system, apparatus and method provide a means for indicating an overload condition has occurred during aircraft operation. The occurrence of an overload condition is automatically determined and an indication output thereof. Based on the indication received by the cockpit, avionics, maintenance, etc., further action may be taken to correct the effects of the overload condition on the tires and/or landing gear. | 11-11-2010 |
20100286880 | AUTOBRAKE AND DECEL CONTROL BUILT-IN TEST EQUIPMENT - A system, apparatus and method provide a means for testing operation of a vehicle brake system. More particularly, a brake controller for controlling operation of the brake system includes a signal generator that can generate data indicative of wheel speed. Based on a user command, the controller uses either actual wheel speed data or simulated wheel speed data as inputs for controlling brake operation. The controller also includes logic for exercising various braking functions so as to enable maintenance personal to determine operational systems of the brake system. | 11-11-2010 |
20100286881 | BRAKE WEAR CONTROL SYSTEM - A system, apparatus and method provide a means for managing wear of brake friction material such that even friction material wear is experienced between brakes. The available friction material of each brake is monitored to determine an amount of wear. Based on the amount of wear, a braking force applied by each brake may be varied to ensure even wear between brakes. | 11-11-2010 |
20100292889 | BRAKE OPERATION BUILT-IN TEST EQUIPMENT - A system, apparatus and method provide a means for testing operation of vehicle brake system. More particularly, a brake actuator is automatically commanded to engage a brake disk stack while the vehicle is in a benign state. An engagement force applied to the brake-disk stack by the actuator then is determined, and the engagement force is compared to a first threshold value. If the engagement force is within a predetermined range of the first threshold value, it is concluded that the brake system is operating normally, otherwise it is concluded that the brake system is operating abnormally. | 11-18-2010 |
20110148396 | SYSTEMS AND METHODS FOR COMPREHENSIVE TIRE PRESSURE MONITORING AND WHEEL SPEED DETECTION - Systems and methods facilitate the monitoring of tire pressure, the detection/determination of wheel speed, or a combination thereof. A system is provided comprising a hub cap, a target coupled to the hub cap, and at least two displacement sensors configured to measure a displacement between each displacement sensor and the target. The target has a variable thickness, and the target comprises a hollow vessel in fluid communication with a tire. | 06-23-2011 |
20110148616 | SYSTEMS AND METHODS FOR COMPREHENSIVE TIRE PRESSURE MONITORING AND WHEEL SPEED DETECTION - Systems and methods facilitate the monitoring of tire pressure, the detection/determination of wheel speed, or a combination thereof. A system is provided comprising a hub cap, a target coupled to the hub cap, and at least two displacement sensors configured to measure a displacement between each displacement sensor and the target. The target has a variable thickness, and the target comprises a hollow vessel in fluid communication with a tire. | 06-23-2011 |
20110153176 | SYSTEMS AND METHODS FOR ADAPTIVE DECELERATION - Systems and methods for adaptive deceleration are disclosed. A brake system controller may perform a method comprising receiving a pedal deflection signal comprising a pedal deflection level, determining a present level of deceleration, and mapping the pedal deflection level to a desired level of deceleration, wherein the desired level of deceleration is greater than the present level of deceleration. | 06-23-2011 |
20110214496 | SYSTEMS AND METHODS FOR BUILT IN TEST EQUIPMENT FOR A BRAKE CONTROL SYSTEM - A method is disclosed that comprises severing an I/O channel between a brake system controller and an aircraft component; sending a test signal to the brake system controller; receiving, from the brake system controller, a feedback signal to the test signal; and determining an appropriateness of the feedback signal. A system is disclosed that comprises a brake system controller wrapped in a BITE region, wherein the BITE region comprises a testing module, a safety interlock region having an I/O channel between the brake system controller and another system, and a testing module capable of sending a test signal to the brake system controller. | 09-08-2011 |
20120065816 | SYSTEMS AND METHODS FOR DYNAMICALLY STABLE BRAKING - Systems and methods for dynamically stable braking are disclosed. A first electromechanical brake actuator controller may be placed in communication with a second electromechanical brake actuator controller, wherein each of the first electromechanical brake actuator controller and second electromechanical brake actuator controller are in communication with electromechanical brake actuators that are associated with the same wheel. The first electromechanical brake actuator controller and second electromechanical brake actuator controllers may then communicate electromechanical brake actuator status information and take corrective measures in accordance with the status information. | 03-15-2012 |
20130060404 | SYSTEMS AND METHODS FOR BRAKING SYSTEM TESTING - Systems and methods disclosed herein may be useful for testing braking systems for use in, for example, an aircraft. A system is disclosed that allows for built in testing. For example, a method if provided comprising sending, from a brake controller, a test command set to at least one of an electromechanical actuator (EMAC) and a brake servo valve (BSV) in response to a landing gear retraction, receiving, at the brake controller, feedback from the at least one of the EMAC and the BSV in response to the test command set, and comparing, at the brake controller, the feedback with a predetermined signature. | 03-07-2013 |
20130060438 | SYSTEMS AND METHODS FOR MANUAL BRAKING SYSTEM - Systems and methods disclosed herein may be useful for manual braking systems for use in, for example, an aircraft. A system is disclosed that allows for manual braking. For example, a system is provided comprising a brake handle, a potentiometer in mechanical communication with the brake handle, a mapping module in electrical communication with the potentiometer, wherein the mapping module receives an output voltage from the potentiometer, wherein the mapping module produces a braking command output. | 03-07-2013 |
20130060441 | SYSTEMS AND METHODS FOR IMPROVED AIRCRAFT BRAKING - Systems and methods disclosed herein may be useful for braking systems for use in, for example, an aircraft. A method is disclosed comprising determining, at a brake controller, an aircraft reference speed for an aircraft having a first wheel and a second wheel, identifying, at the brake controller, a state comprising the first wheel having a different rotational velocity than the second wheel, wherein the difference in rotational velocity sums to about zero, calculating, at the brake controller, a compensation factor for at least one of the first wheel and the second wheel, and adjusting, at the brake controller, a locked wheel trigger velocity in accordance with the compensation factor. | 03-07-2013 |
20130062935 | SYSTEMS AND METHODS FOR EMERGENCY BRAKING SYSTEM - Systems and methods disclosed herein may be useful emergency braking systems for use in, for example, an aircraft. A system is disclosed that allows emergency braking without the need for a manually operated emergency brake. For example, a system is provided comprising a potentiometer in mechanical communication with a brake pedal, a first electronic switch in electrical communication with the potentiometer, a second electronic switch indicating a displacement of the brake pedal, wherein a brake control valve opens in response to the first electronic switch, and wherein a shutoff valve opens in response to the second electronic switch. | 03-14-2013 |
20130068053 | ACTUATOR SYSTEM AND METHOD - Systems and methods disclosed herein may be useful for use in a ballscrew assembly. In this regard, a ballscrew assembly is provided comprising a ballscrew having a ballscrew stop, a ballnut having a ballnut stop, wherein contact between the ballnut stop and the ballscrew stop impede rotation of the ballscrew relative to the ballnut. The ballnut stop may comprise an axial mating surface and the ballscrew stop may comprise an axial mating surface. Additionally, the ballnut may comprise threads axially spaced a first distance apart and the ballnut stop comprises a surface having length equal to the first distance. | 03-21-2013 |
20130139590 | SYSTEMS AND METHODS FOR LANDING IDENTIFICATION - Systems and methods disclosed herein may be useful for use in landing identification. In this regard, a method is provided comprising receiving pulse information over a first time period, wherein the pulse information is indicative of an angular distance traveled by a first wheel, comparing the pulse information to a threshold value, and determining a likelihood of a landing event based upon the comparison. In various embodiments, a system is provided comprising a monstable multivibrator in electrical communication with a metal-oxide-semiconductor field-effect transistor (MOSFET), a resistor-capacitor network in electrical communication with the MOSFET, and a comparator that receives a voltage from the resistor-capacitor network and a reference voltage. | 06-06-2013 |
20130144559 | SYSTEMS AND METHODS FOR LANDING IDENTIFICATION - Systems and methods disclosed herein may be useful for use in landing identification. In this regard, a method is provided comprising receiving pulse information over a first time period, wherein the pulse information is indicative of an angular distance traveled by a first wheel, comparing the pulse information to a threshold value, and determining a likelihood of a landing event based upon the comparison. In various embodiments, a system is provided comprising a monstable multivibrator in electrical communication with a metal-oxide-semiconductor field-effect transistor (MOSFET), a resistor-capacitor network in electrical communication with the MOSFET, and a comparator that receives a voltage from the resistor-capacitor network and a reference voltage. | 06-06-2013 |
20130145833 | SYSTEMS AND METHODS FOR BUILT IN TEST EQUIPMENT FOR A BRAKE CONTROL SYSTEM - A method is disclosed that comprises severing an I/O channel between a brake system controller and an aircraft component; sending a test signal to the brake system controller; receiving, from the brake system controller, a feedback signal to the test signal; and determining an appropriateness of the feedback signal. A system is disclosed that comprises a brake system controller wrapped in a BITE region, wherein the BITE region comprises a testing module, a safety interlock region having an I/O channel between the brake system controller and another system, and a testing module capable of sending a test signal to the brake system controller. | 06-13-2013 |
20130282251 | SYSTEM AND METHODS FOR DYNAMICALLY STABLE BRAKING - Systems and methods tbr dynamically stable braking are disclosed. A first electromechanical brake actuator controller may be placed in communication with a second electromechanical brake actuator controller, wherein each of the first electromechanical brake actuator controller and second electromechanical brake actuator controller are in communication with electromechanical brake actuators that are associated with the same wheel. The first electromechanical brake actuator controller and second electromechanical brake actuator controllers may then communicate electromechanical brake actuator status information and take corrective measures in accordance with the status information. | 10-24-2013 |
20130292992 | SYSTEMS AND METHODS FOR AIRCRAFT BRAKING AND TAXIING - Systems and methods are disclosed for aircraft braking and taxiing systems for use in, for example, an aircraft. In this regard, system comprising an electric motor coupled to a first transmission, a first clutch for selectively engaging the first transmission to a propulsion transmission and a brake damping system, wherein, in response to engagement with the propulsion transmission, the electric motor drives an aircraft wheel, wherein, in response to engagement with the actuator ram, the electric, motor drives the brake clamping system to apply force to an aircraft brake disk stack. | 11-07-2013 |
20130311005 | SYSTEMS AND METHODS FOR REFLECTED INERTIA PARKING BRAKE - Systems and methods are disclosed for parking brake systems for use in, for example, an aircraft. In this regard, a system is provided comprising a parking brake system for an aircraft comprising an electric motor coupled to a high gear ratio transmission, a first clutch for engaging the electric motor to a propulsion transmission, and a second clutch for engaging propulsion transmission to an aircraft wheel. The high gear ratio transmission has a gear ratio sufficient to maintain the aircraft wheel in a stationary position. | 11-21-2013 |
20140018978 | SYSTEMS AND METHODS FOR DRAGGING BRAKE DETECTION - Systems and methods are disclosed for detection of dragging brakes for use in, for example, an aircraft. A method is provided comprising calculating, by a brake controller, a slip ratio based upon an aircraft speed and a speed of an aircraft wheel, determining, by the brake controller, that the slip ratio is above a threshold value, and sending, by the brake controller and in response to the slip ratio being above the threshold value, a dragging brake signal to an aircraft component. | 01-16-2014 |