Abstract: A system and method are provided for the installation of dual line spacers, triple line spacers or quad line spacers on transmission power lines. A robotic assembly is configured to traverse along 2, 3 or 4 wires using motorized wheel mechanisms, where the robotic assembly can hold a number of 2, 3 or 4-wire spacers and dispense them onto the wires for installation. The robotic assembly uses impact wrenches that can position onto the fastening bolts of the line spacers and tighten the bolts to hold the line spacers on the wires. Once a line spacer is installed, the robotic assembly releases the installed line spacer and then traverses along the wires to the next position for a next line spacer to be installed.

Abstract: A system and method for installing bird flight diverters on wires, such as power lines and guy wires, is described. The system and method include the use of an unmanned aerial vehicle to place a robotic line crawler onto wires where the line crawler is configured to place bird flight diverters on the wire as the line crawler travels along the wire.

Abstract: A method and system for installing Stockbridge dampers on wires, such as power lines and guy wires, is described. The method and system include the use of a robotic Stockbridge damper installer onto the wires where the robotic installer is configured to place Stockbridge dampers on the wire as the robotic installer travels along the wire.

Abstract: A rotor system for aerial vehicles where two or more rotor systems are used in a coaxial or tandem arrangement on the aerial vehicle.

Abstract: A negative hinge offset rotor head for a coaxial helicopter, the rotor head having two or more flapping rotor blades having outer and inner tips, the inner tips rotatably attached to a hinge attachment rotated by a driveshaft where the driveshaft is positioned between the rotor blades and the rotor blades' respective hinge attachment.