Abstract: The disclosure relates to a valve for a fuel system having a body with at least one inlet and one outlet, the inlet fluidly connected to a pressurised fuel source in use. A shuttle is mounted within the body, the shuttle having a cavity of fixed volume and movable between a first position where fluid is permitted to flow through the inlet and is prevented from flowing through the outlet and a second position where fluid is prevented from flowing through the inlet and is permitted to flow through the outlet. A piston is configured to engage the fluid within the shuttle cavity to move the shuttle between the first and second position. A biasing mechanism biases the shuttle towards the first position and where the shuttle moves towards the second position when the fluid within the shuttle reaches a critical pressure.

Abstract: A system that stores information indicative of real-time locations of a wearable alert devices, receives information indicative of a potentially dangerous condition in a geographic area, determines which of the wearable alert devices are in the geographic area, and outputs alerts for transmittal to the wearable alert devices in the geographic area.

Abstract: A system that stores a user profile that associates a wearable alert device with a user and includes contact information for an emergency contact, receives information indicative of a real-time location of the wearable alert device and information indicating that the user of the wearable alert device is potentially experiencing an abnormal physiological condition, and outputs an alert for transmittal to the emergency contact that includes an indication that the user is potentially experiencing the abnormal physiological condition and the real-time location of the wearable alert device.

Abstract: A vibration attenuator for an aircraft has first and second coaxial spinners configured for rotation about a mast axis and relative to a rotor. Upper and lower weights of each spinner are spaced radially from the axis and positioned 180 degrees from each other about the axis. The weights of each spinner are spaced from each other a distance parallel to the mast axis, each weight rotating about the mast axis in a different plane. The spinners rotate together relative to the rotor at a selected angular rate and are selectively rotatable relative to each other between a minimum-moment configuration, in which the upper weight of each spinner is angularly aligned with the lower weight of the other spinner, and a maximum-moment configuration, in which the upper weights are angularly aligned and the lower weights are angularly aligned, producing a whirling moment about the mast axis as the spinners rotate.

Abstract: A vibration attenuator for a rotor of an aircraft has a track housing adapted for rotation relative to the rotor and configured for rotation at a second angular velocity greater than a first angular velocity of the rotor. A track is located within the track housing and has a reaction surface, a pair of weights being configured for movement within the track and in contact with the reaction surface. A stop assembly has a pair of stops spaced 180 degrees apart, the stops separating the weights from each other, and each weight being allowed to travel within the track between the stops. A motor rotates the track housing relative to the rotor. The weights are free to travel relative to each other between a minimum-force configuration, in which the weights are positioned 180 degrees apart, and a maximum-force configuration, in which both weights are adjacent one of the stops.

Abstract: Cable pullers are provided. A cable puller includes a frame, and a boom assembly rotatably connected to the frame. The boom assembly includes a drive assembly, a first arm extending in a first direction from the drive assembly, a second arm extending in a second opposite direction from the drive assembly, and a third arm rotatably connected to the second arm. Rotation of the boom assembly relative to the frame causes rotation of the third arm relative to the second arm to a position wherein a longitudinal axis of the third arm is parallel with a longitudinal axis of the second arm.

Abstract: Methods, systems, articles of manufacture and apparatus to privatize consumer data are disclosed. A disclosed example apparatus includes a consumer data acquirer to collect original data corresponding to (a) confidential information associated with consumers and (b) behavior information associated with the consumers, and a data obfuscator. The data obfuscator is to determine a degree to which the original data is to be obfuscated and a type of obfuscation to be applied to the original data based on the original data, generate obfuscation adjustments of the original data based on the degree and the type, and generate an obfuscation model based on the obfuscation adjustments.

Abstract: Disclosed herein are methods of forwarding packets on a network, such as a leaf-spine network having leaf devices and spine devices. The methods may include receiving a packet at an ingress leaf device, and determining based, at least in part, on a header of the packet whether the packet is to be transmitted to a spine device. The methods may further include ascertaining based, at least in part, on a header of the packet whether to perform encapsulation on the packet, encapsulating the packet according to a result of the ascertaining, and then transmitting the packet to a spine device according to a result of the determining. Also disclosed herein are network apparatuses which include a processor and a memory, at least one of the processor or the memory being configured to perform some or all of the foregoing described methods.

Abstract: Systems and methods include providing a coaxial helicopter with a main rotor system having an upper rotor system, a coaxial counter-rotating lower rotor system, and a rotor mast assembly having an upper rotor mast and a coaxial counter-rotating lower rotor mast. The upper rotor system and an associated upper vibration reduction system are coupled to the upper rotor mast. The upper vibration reduction system provides in-plane vibration control and reduction to the upper rotor system. The lower rotor system and an associated lower vibration reduction system are coupled to the lower rotor mast. The lower vibration reduction system provides in-plane vibration control and reduction to the lower rotor system. A third vibration reduction system is coupled to the rotor mast assembly and cooperates with the upper and lower vibration reduction systems to provide total in-plane vibration control and reduction to the main rotor system.

Abstract: The invention provides a system and method for receiving hazard and event information in a mobile unit and using that information to warn a user of an event or future hazard with reference to the mobile unit's location and/or intended direction of travel. A hazard location algorithm compares a forecast location of each mobile unit with a forecast hazard and transmits a warning to each mobile unit that is predicted to encounter the hazard. As the mobile unit moves, its actual position is updated in an event center, and a revised warning is transmitted to the mobile unit as applicable. Warnings include audio warnings for playback and/or visual warnings for display on the mobile device. Users may also wirelessly report events or hazards to a central server in an event center by sending data to the event center via a wireless communications network. Secondary information may be included, based on the selected event type.

Abstract: A system that stores a user profile that associates a wearable alert device with a user and includes contact information for an emergency contact, receives information indicative of a real-time location of the wearable alert device and information indicating that the user of the wearable alert device is potentially experiencing an abnormal physiological condition, and outputs an alert for transmittal to the emergency contact that includes an indication that the user is potentially experiencing the abnormal physiological condition and the real-time location of the wearable alert device.

Abstract: A system that stores information indicative of real-time locations of a wearable alert devices, receives information indicative of a potentially dangerous condition in a geographic area, determines which of the wearable alert devices are in the geographic area, and outputs alerts for transmittal to the wearable alert devices in the geographic area.

Abstract: In one embodiment, a system that stores information indicative of real-time locations of a wearable alert devices, receives information indicative of a potentially dangerous condition in a geographic area, determines which of the wearable alert devices are in the geographic area, and outputs alerts for transmittal to the wearable alert devices in the geographic area. In another embodiment, the system stores a user profile that associates a wearable alert device with a user and includes contact information for an emergency contact, receives information indicative of a real-time location of the wearable alert device and information indicating that the user of the wearable alert device is potentially experiencing an abnormal physiological condition, and outputs an alert for transmittal to the emergency contact that includes an indication that the user is potentially experiencing the abnormal physiological condition and the real-time location of the wearable alert device.

Abstract: A vibration attenuator for a rotor is rotatable about a mast axis and has a frame configured for rotation about the mast axis relative to the rotor. A first mass is axially translatable in a first direction relative to the frame parallel to a first axis, and a first biasing force urges the first mass toward a first-mass rest position in which the first mass is symmetric about the mast axis. A second mass is axially translatable in a second direction relative to the frame parallel to a second axis, and a second biasing force urges the second mass toward a second-mass rest position in which the second mass is symmetric about the mast axis. A selected first or second mass moves radially outward from the rest position to oppose vibrations in the rotor.

Abstract: An aspect provides a skid landing gear assembly including a cross member disposed between a first skid tube and a second skid tube, and a tension cable member configured to be disposed in the cross member; wherein the tension cable member resists outward deflection of at least a portion of the skid landing gear assembly when a downward load is applied to the skid landing gear assembly. In other aspects, there are methods of avoiding ground resonance in a skid landing gear assembly, methods of assembling a skid landing gear assembly, methods of operating a helicopter with a skid landing gear assembly, and methods of improving the service life of a skid landing gear assembly.

Abstract: An apparatus comprising a float bag comprising an air bladder configured to inflate when an aircraft lands in the water, a girt coupled to the air bladder and configured to attach the air bladder to the aircraft via at least one airframe fitting, and a load attenuator coupled to the girt and configured to be positioned between the girt and the airframe fitting when the float bag is attached to the aircraft, wherein the plurality of load attenuators are configured to mechanically deform in a progressive failure fashion from a first effective length to a second effective length greater than the first length in response to an applied tensile load on the load attenuators coupled to the plurality of girts and the aircraft airframe, wherein the load attenuators are selected to reduce the force with a total length that minimizes buoyancy depth of the aircraft.

Abstract: The vibration suppression system includes a vibration isolator located in each corner in a four corner pylon mount structural assembly. The combination of four vibration isolators, two being forward of the transmission, and two being aft of the transmission, collectively are effective at isolating main rotor vertical shear, pitch moment, as well as roll moment induced vibrations. Each opposing pair of vibration isolators can efficiently react against the moment oscillations because the moment can be decomposed into two antagonistic vertical oscillations at each vibration isolator. A pylon structure extends between a pair of vibration isolators thereby allowing the vibration isolators to be spaced a away from a vibrating body to provide increased control.

Abstract: A piston for use in a liquid inertia vibration elimination (“LIVE”) system. The piston includes a port that extends from a first end of the piston to an opposite second end of the piston, wherein a length of the port is longer than a length between the first and second ends of the piston.

Abstract: A process and apparatus provides alternative hydrotreating reactor trains for hydrotreating a hydrocarbon stream. One hydrotreating reactor train is smaller than the other and the smaller train comes on stream to allow replacement or regeneration of catalyst in the larger train. A sulfide system also sulfides the catalyst volume in the reactor train that is off stream to prepare it for renewed hydroprocessing of feed when back on stream. The process and apparatus can be used to keep hydroprocessing reactors on stream to continuously provide feed to an FCC unit which has a longer period before shut down.

Abstract: A method and system for best effort propagation of security group information is disclosed. The method includes determining if a reserved group identifier is associated with a destination and, if the reserved group identifier is associated with the destination, indicating that a packet received at a network node can be sent to another network node. The packet includes destination information that identifies the destination as a destination of the packet.