Abstract: A improved tilt rotor aircraft comprising an airframe, at least one wing member coupled to the airframe, and at least one tilt rotor assembly carried by the at least one wing member. The improved tilt rotor aircraft includes a low-height tunable downstop assembly for isolating static and dynamic lateral loads between the tilt rotor assemblies and the wings. The low-height tunable downstop assembly comprises a pivotable striker assembly having an adjustable stiffness, and a cradle assembly adapted to releasably receive the striker assembly. The low-height tunable downstop assembly isolates yaw loads while providing a stiff vertical support.

Abstract: A trim actuator for actuating mechanical controls in an aircraft flight control system in response to signals from a pilot having a stepper motor, a gear train member coupled to the stepper motor, an output member coupled to the gear train member. The trim actuator has a locked mode in which the mechanical controls are held in a fixed position relative to the aircraft, and a non-interference mode in which the mechanical controls are free to be moved by the pilot without interference from the aircraft flight control system. The non-interference mode and the locked mode are both achieved by the stepper motor.

Abstract: A rigid water recreation board for towing behind a water vessel. There is an eyelet extending through the board. A rope is attached to the vessel and freely passes through the eyelet. A handle is attached to the rope and is dimensioned such that it may not pass through the eyelet. A rider may lie upon, kneel upon, or stand upon the board as it is being towed by the vessel. The rider has the option of holding onto the handle or letting the handle be pulled against the upper surface of the board while the board is in tow by the vessel. A towing harness is provided which ensures that force from the rope may be applied through the towing harness to each side of the rigid water recreation board in order to minimize the downward diving of the rigid water recreation board when it is towed with no rider thereon.

Abstract: A prop rotor hub includes a constant velocity joint in the same plane as a prop blade yoke. Torque is transmitted from a shaft to the blades through the CV joint, hub plates attached to the CV joint, and the yoke, which is attached to the hub plates. Providing all elements in a substantially planar arrangement results in a hub assembly which has significantly less height than a traditional design. The hub itself is in-plane with the yoke, resulting in a more efficient torque transmission from the mast to the rotor.

Abstract: A position light for use on an aircraft, the position light having a base member coupled to the wing tip portion, a lens coupled to the base member, a light source interior to the lens member, and a reflector member pivotally coupled to the base member, the reflector member being adapted to reflect light from the light source in selected directions and at selected intensities. The position light may be installed on a tilt rotor assembly of a tilt rotor aircraft so that light is reflected in selected directions and at selected intensities, regardless of whether the tilt rotor assembly is in an airplane mode, a helicopter mode, or any position therebetween.