Abstract: A device for mounting on a structure surface includes a component, a circuit, a moisture barrier, and a protective cover. The moisture barrier is within the protective cover. The component and the circuit are within the moisture barrier. The component is for bonding to the structure surface with a bond susceptible to damage from moisture. The circuit includes a radio frequency transmitter. The circuit is for providing data derived from the component to the radio frequency transmitter for external transmission.

Abstract: The computer programmable system and program product include first program instructions for actively driving a first imbalance mass concentration rotor and a second imbalance mass concentration rotor at a vibration canceling rotation frequency while controlling the rotational position of the first imbalance mass concentration and the second imbalance mass concentration to produce a rotating net force vector to inhibit periodic vibrations. The program product includes second program instructions to opposingly orient the first imbalance mass concentration relative to the second imbalance mass concentration during a starting stopping rotation speed less than the vibration canceling rotation frequency. The system includes a fault mode control protocol for controlling a rotation of the rotors during a sensed failure of the rotating assembly vibration control system.

Abstract: A rotary wing system with a rotating blade and a fluid damper with a damper fluid in a first variable volume chamber and a second variable volume chamber, with a fluid damping flow valve controlled conduit and a fluid flow pressure sensing control valve assembly between the first variable volume chamber and the second variable volume chamber. The fluid flow pressure sensing control valve assembly has a fluid flow pressure sensing control valve assembly control valve for obstructing a damper fluid flow through the fluid damping flow valve controlled conduit. A working of the first variable volume chamber and the second variable volume chamber by rotary wing motions actuates the opening of the fluid flow pressure sensing control valve assembly control valve that obstructs the damper fluid flow through the fluid damping flow valve controlled conduit.

Abstract: An assembly for managing heat and noise generated by an engine comprises a dash panel, an acoustic absorbing layer, a scrim, and a heat reflective coating. The acoustic absorbing layer comprises a plurality of fibers secure in a resin, where the acoustic absorbing layer is positioned proximate to the dash panel. The scrim is positioned proximate to the acoustic absorbing layer. The heat reflective coating comprises a polymer material and heat reflecting additives dispersed in the polymer material. The heat reflective coating is applied to the scrim as a solution of the polymer material and heat reflecting additives.

Abstract: A rotary blade rotating hub mounted rotating assembly vibration control system including a first imbalance mass concentration rotor, a second imbalance mass concentration rotor, a third imbalance mass concentration rotor, and a fourth imbalance mass concentration rotor. The first imbalance mass concentration rotor has a first imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The second imbalance mass concentration rotor has a second imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The third imbalance mass concentration rotor has a third imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis. The fourth imbalance mass concentration rotor has a fourth imbalance mass concentration rotor center axis rotation centered on the rotating assembly center rotation axis.

Abstract: An aircraft front nose landing gear having both elastomeric and nonelastomeric elements is provided along with a method of making the same. The aircraft front nose landing gear includes the ability to reduce/inhibit oscillating shimmy rotation vibrations. The method further provides for making a landing gear with a shimmy damper for further reducing oscillating rotations.

Abstract: The invention provides an aircraft with an auxiliary power unit isolated from the aircraft. An auxiliary power unit suspension system includes at least one suspension linkage. The suspension linkage terminates with a first low stiffness elastomeric rod end. The low stiffness elastomeric rod end has a low spring rate with the aircraft auxiliary power unit suspension system providing the aircraft auxiliary power unit with a suspended auxiliary power unit natural frequency, the suspended auxiliary power unit natural frequency below the aircraft auxiliary power unit operation frequency.

Abstract: The present invention relates to an equipment engine mounting system and method for mounting an equipment engine to an equipment frame using dampers, elastomeric and nonelastomeric components to inhibit the a transmission of vibrations of the equipment engine to the equipment frame.

Abstract: A controllable brake includes a housing and a rotor supported on a shaft. The rotor is housed within a chamber containing a field controllable material which is acted upon by a magnetic field generator to impede movement of the rotor. The shaft is supported by bearings. The controllable brake housing defines a second housing chamber adapted to enclose means for monitoring and/or controlling the brake and in this way, an integrated, compact controllable brake is provided.

Abstract: The land vehicle includes a body, a controllable suspension system, the controllable suspension system for controlling suspension movements between the body and land engagers. The land vehicle includes a computer system and suspension sensors located proximate the land engagers for measuring suspension parameters representative of suspension movements between the body and the land engagers and outputting a plurality of suspension sensor measurement output signals. The land vehicle includes controllable force suspension members located proximate the land engagers and the suspension sensors, the controllable force suspension members applying suspension travel forces between the body and the land engagers to control the suspension movements.

Abstract: An adhesive composition comprising as principal components, a polymerizable component, an ambient temperature radical polymerization catalyst system and a photoinitiator. The adhesive may optionally comprise an adhesion promoter, a toughener, an epoxy, and a filler material. Further, a two-part reactive adhesive comprising, a first part comprising, (i) at least one free radical-polymerizable monomer, (ii) at least one reducing agent, and (iii) a photoinitiator, and a second part comprising an oxidizing agent that is reactive at ambient temperature with the reducing agent to produce free radicals that are capable of initiating and propagating free radical polymerization.

Abstract: Helicopters and rotary wing aircraft vibration control system for controlling rotating machinery vibrations are provided for rotating machinery vibrations correlating with operational rotating frequencies. The vibration control system includes a first imbalance rotor with a first mass concentration, the first imbalance rotor driven to rotate with a first controllable phase, a second imbalance rotor with a second mass concentration, the second imbalance rotor driven to rotate with a second controllable phase, a third imbalance rotor with a third mass concentration, the third imbalance rotor driven to rotate with a third controllable phase, a fourth imbalance rotor with a fourth mass concentration, the fourth imbalance rotor driven to rotate with a fourth controllable phase. The vibration control system includes vibration sensors for monitoring the vibration and outputting vibration signals.

Abstract: The land vehicle includes a body, a power plant and a plurality of land engagers, the land engagers for engaging land and propelling the land vehicle across land. The land vehicle includes a controllable suspension system, the controllable suspension system for controlling suspension movements between the body and the land engagers. The land vehicle includes a computer system and suspension sensors located proximate the land engagers for measuring suspension parameters representative of suspension movements between the body and the land engagers and outputting a plurality of suspension sensor measurement output signals. The land vehicle includes controllable force suspension members located proximate the land engagers and the suspension sensors, the controllable force suspension members applying suspension travel forces between the body and the land engagers to control the suspension movements.

Abstract: A maleimide terminated polyimide incorporated into a two-part acrylic structural adhesive system. The maleimide terminated polyimide of the various embodiments of the present invention provide improving thermal stability, strength, and toughness.

Abstract: A system for balancing an aircraft propeller system receives a vibration signal from the aircraft propeller system and determines whether the vibration signal indicates a transient vibration condition. If it is determined that the vibration signal does not indicate a transient condition, the system enables a balance correction controller. The controller generates a balance correction signal based on the vibration signal, and balances the aircraft propeller system in response to the balance correction signal if the balance correction controller is enabled.

Abstract: The rotary damper for controlling helicopter motions includes an outer canister with an inner paddle wheel receiving cavity which receives an inner paddle wheel with upper and lower elastomeric tubular intermediate members between the inner paddle wheel and the outer canister. The canister and inner paddle wheel form neighboring variable volume chambers in liquid communication through liquid damping conduits. A clockwise rotation of the inner paddle wheel about the center of rotation axis relative to the outer canister pumps damper liquid from a second variable volume chamber through a first liquid conduit towards a first variable volume chamber, and a counterclockwise rotation of the paddle wheel relative to the outer canister pumps the damper liquid from the first variable volume chamber through the first liquid conduit towards the second variable volume chamber with the elastomeric tubular intermediate members providing for the relative rotation and containing the damper liquid in the damper.

Abstract: A vehicle operator input device for controlling the vehicle with the operator input device including an operator interface lever moveable by a vehicle operator in first and second directions about an axis. The operator input device includes a sensor system with a sensor target. The sensor system senses the moveable operator interface lever and provides an operator interface lever position signal as a function of a position of the operator interface lever.

Abstract: The invention provides a rotary wing aircraft helicopter vehicle rod end and method of making a rod end. The rotary wing aircraft rod end includes a nonelastomeric inner member having an outer bonding surface segment and an axial bore with a center bore axis, a nonelastomeric outer member having an inner bonding surface segment and an axial bore center bore axis, and molded in place alternating elastomeric shims and nonelastomeric shims connecting the nonelastomeric inner member to the nonelastomeric outer member. The rod end includes a first inner elastomeric shim bonded to the nonelastomeric inner member outer bonding surface segment and to a first inner nonelastomeric shim and a second outer elastomeric shim bonded to the nonelastomeric outer member inner bonding surface segment and to a second outer nonelastomeric shim. The nonelastomeric inner member has a molded misalignment rotary wing aircraft rod end orientation with the outer nonelastomeric outer member.

Abstract: A vehicle suspension system for large vehicles includes at least one elastomeric bearing. The bearing includes at least one substantially cylindrical elastomeric portion, at least one substantially frustospherical elastomeric portion, and at least one non-extensible shim disposed between and bonded to the substantially cylindrical elastomeric portion and the substantially frustospherical elastomeric portion.

Abstract: One embodiment of an electronic system includes a network having a first sensing device with a first address and a second sensing device with a second address. The first sensing device includes first sensors, a first processor, a first memory, and a first communications device. The first sensors include a first dry bulb temperature sensor, a first relative humidity sensor, and a first radiant energy sensor. The second sensing device includes a second sensor, a second processor, a second memory, and a second communications device. The second processor includes a program to use the second communications device to communicate the second address and data derived from the second sensor to the first communications device.