Abstract: A method for reducing airline fleet carbon dioxide and greenhouse gas emissions and fees associated with the emission of greenhouse gases is provided. The method is implemented by equipping at least a substantial portion or all of the aircraft in an airline's fleet with onboard wheel drive means capable of translating torque through aircraft wheels and controllable to move the aircraft on the ground independently without complete reliance on the aircraft's engines or the use of external tow vehicles. One or more drive wheels, each of which may be powered by onboard electric, hydraulic, or other wheel drive means, are controllable to move each aircraft efficiently during ground travel without increasing carbon emissions.

Abstract: A wheel design is provided for an aircraft landing gear wheel that is configured to maximize the space available within a landing gear wheel well to support a geared motor assembly that drives the aircraft wheel when the aircraft is on the ground. The wheel includes inboard and outboard support walls that are spaced apart a selected distance along the wheel axle so that the geared motor assembly components are substantially completely contained within the wheel space defined by the support walls. The preferred motor driver assembly includes an electric motor and a gear and clutch assembly operatively connected to the wheel to drive the wheel and move the aircraft on the ground. The wheel and motor driver assembly described herein may be retrofitted in an existing aircraft wheel without changing existing landing gear components, including tires, piston, and axle.

Abstract: A method for reducing maintenance and increasing the effective life of an aircraft's landing gear, thereby increasing the aircraft's flight and landing cycles is provided. The present method eliminates adverse stresses and forces produced on landing gear components by the operation of a tow vehicle to tow the aircraft on the ground by providing an onboard wheel driver that is powered to drive at least one of the aircraft's nose wheels or main wheels to move the aircraft on the ground. Movement of the aircraft on the ground is controlled by the operation of the driver-powered drive wheel, eliminating the possibility of damage to landing gear components associated with tug operation.

Abstract: Improved low light vision and thermal imaging devices are provided. The devices of the present invention employ thermionic or thermotunneling cooling, with or without Avto Metals™, to ensure efficient operation under conditions of low illumination or the complete absence of illumination to detect emitted or reflected infrared and visible light radiation, significantly reducing thermal noise to produce superior image resolution and sensitivity within a small, lightweight footprint that will have a wide range of military, law enforcement, civilian, and other applications.

Abstract: A method for improving the efficiency of airport deicing operations is provided. The present method equips aircraft using an airport with onboard non-engine drive means powered to drive one or more landing gear wheels to move the aircraft on the ground autonomously during taxi without reliance on the aircraft's engines. Decreasing or substantially eliminating the operation of aircraft engines during taxi substantially eliminates the likelihood that ice, snow, slush, and other runway contaminants moved by the jet blast produced by aircraft engine operation during taxi will be sprayed from the runway onto surfaces of taxiing aircraft, both prior to deicing and after deicing. Deicing operations can be conducted more quickly, and repeated deicing operations on a single aircraft can be avoided.

Abstract: A method is provided for determining a relational speed and position of two moving components, preferably an aircraft landing gear drive wheel, a component of the drive wheel, a drive means driving the landing gear drive wheel, or a component of the drive means, using fiber optic technology. Speed and positional information relating to the relative positions of a part of a landing gear drive wheel and a part of a drive means driving the drive wheel can be obtained to ensure their proper engagement or interaction. A single optical fiber preferably provides information relating to drive wheel speed, drive means speed, drive wheel position, and drive means position, therefore enabling efficient autonomous ground travel of an aircraft equipped with this system. The present method can also be employed to monitor aircraft wheel speed in aircraft that use thrust from the engines to move an aircraft on the ground.

Abstract: A starter/generator machine for a turbine with a turbine enclosure, an air duct, and a plurality of fan blades is provided. The starter/generator machine includes a plurality of stator elements spaced at intervals in a ring shape adjacent to the air duct and a plurality of rotor elements mounted on the fan blades. The stator elements and the rotor elements are mounted to interact magnetically to exert a force sufficient to move the rotor elements. The stator elements are shaped to minimize air flow interference and are formed with a core, at least one pole, and multiple windings. The spacing between the stator elements and the rotor elements forms an air gap on the order of 5-10 mm, and the number of stator elements is different from the number of rotor elements.

Abstract: A system and method for setting, controlling, or maintaining a selected taxi speed and route for one or more aircraft equipped with an onboard non-engine powered drive means powering one or more aircraft wheels to move the aircraft during taxi is provided. Taxi speed and/or route can be set, maintained, or controlled by the aircraft pilot or ground traffic control in conjunction with taxi speed and travel of other aircraft and ground vehicles. A pilot activates a speed control to set and control taxi speed. The aircraft will automatically travel on the ground at that speed without input from the pilot until it is necessary to change the speed manually or automatically. Airport ground traffic control can generate taxi profiles for all non-engine driven aircraft to automatically control, subject to pilot capability to override, the taxi of multiple aircraft at an airport in conjunction with ground vehicle movement.

Abstract: A method is provided for increasing the number of takeoff and landing slots and increasing gate capacity at airports with slot controls, including airports that are constrained from operation by curfews that limit the hours when aircraft can operate. The present method is intended to be used in connection with an aircraft that is equipped with onboard wheel drive means capable of translating torque through aircraft wheels and controllable to move the aircraft independently on the ground quietly and efficiently to a runway for takeoff without reliance on the aircraft's engines or the use of external tow vehicles.

Abstract: A drive system with harmonic drive designed to meet the high power and torque requirements required to drive an aircraft independently on the ground is provided. The drive system includes an electric motor driven by a harmonic drive assembly that may be configured to be integral with the motor. This drive system with harmonic drive can be effectively installed in an existing aircraft nose wheel or main wheel without changes to other components.

Abstract: An improved thermoelectric converter device capable of effective and efficient high temperature operation is provided. The device includes at least a pair of spaced electrodes including substrates made from polished single crystal sapphire and active low and high temperature heat transfer regions contiguous with the electrodes and formed from materials selected to enhance heat transfer, particularly at high temperatures. The device is capable of more efficient operation and increased operating efficiencies over a wider range of temperatures than has heretofore been possible.

Abstract: A system and method for generating artificial light for interior or exterior illumination are provided to illuminate interior and exterior underground, underwater, ground level, and above ground structures and spaces by employing various combinations of solar photovoltaic-generated power and conventional power to directly power LED or other light sources to provide interior or exterior illumination of a desired optimal intensity. One embodiment of this system provides a virtual skylight that illuminates interior structures and spaces with the benefits of illumination provided by a conventional skylight but without the disadvantages. A direct connection between a solar photovoltaic cell and the LED or other light-producing source eliminates complex and costly circuitry in both interior and exterior applications. The system is configured to provide, alternatively, solar PV power and/or conventional power as required to maintain artificial illumination at a desired optimum threshold intensify.

Abstract: A starter/generator machine for a turbine with a turbine enclosure, an air duct, and a plurality of fan blades is provided. The starter/generator machine includes a plurality of stator elements spaced at intervals in a ring shape adjacent to the air duct and a plurality of rotor elements mounted on the fan blades. The stator elements and the rotor elements are mounted to interact magnetically to exert a force sufficient to move the rotor elements. The stator elements are shaped to minimize air flow interference and are formed with a core, at least one pole, and multiple windings. The spacing between the stator elements and the rotor elements forms an air gap on the order of 5-10 mm, and the number of stator elements is different from the number of rotor elements.

Abstract: A method for enhancing pilot and cockpit crew efficiency and increasing aircraft safety during aircraft ground travel between landing and takeoff is provided. The present method is most effective in enhancing pilot efficiency and aircraft safety in an aircraft equipped with at least one powered, self-propelled drive wheel that drives the aircraft on the ground independently of the aircraft main engines or external tow vehicles that is controlled by the pilot and cockpit crew to maneuver the aircraft during ground travel.

Abstract: A method for extending the useful and economic life of an aircraft and improving aircraft efficiency is provided. This method produces significant fuel savings on the ground and in flight as well as cost-effective and efficient operation of and reduced maintenance requirements for older aircraft. The increased economic viability of the continued use of older aircraft is achieved by equipping an aircraft with at least one onboard drive wheel assembly controllably powered to drive the aircraft during ground travel independently of aircraft engines or external tow vehicles. The substantial elimination of damage to an aircraft's airframe, brakes, landing gear, and engine components resulting from tow vehicle attachment, brake application during ground travel with operating aircraft engines, or by FOD produces cleaner, more efficient engine operation during flight. Significant and substantial potential cost savings realized by the present method makes the continued use of older aircraft a viable option.

Abstract: In broad terms the present invention is a semiconductor junction comprising a first material (102) and a second material (104), in which a surface of one or both of the junction materials has a periodically repeating structure that causes electron wave interference resulting in a change in the way electron energy levels within the junction are distributed.

Abstract: An integral motor and wheel assembly for aircraft landing gear is provided that includes an electric motor packaged within at least one gear wheel and configured to fit completely within the space provided in an existing aircraft for the landing gear components. The motor is positioned within the wheel to minimize the spin-up weight and to maximize the space within a given volume allocated for the motor. Installation of this motor and gear wheel assembly in an existing aircraft landing gear is designed to permit the continued use of existing landing gear components, including tires, axles, and pistons, so that the assembly can be easily retrofitted into existing aircraft.

Abstract: A wheel design is provided for an aircraft landing gear wheel that is configured to maximize the space available within a landing gear wheel well to support a geared motor assembly that drives the aircraft wheel when the aircraft is on the ground. The wheel includes inboard and outboard support walls that are spaced apart a selected distance along the wheel axle so that the geared motor assembly components are substantially completely contained within the wheel space defined by the support walls. The preferred motor driver assembly includes an electric motor and a gear and clutch assembly operatively connected to the wheel to drive the wheel and move the aircraft on the ground. The wheel and motor driver assembly described herein may be retrofitted in an existing aircraft wheel without changing existing landing gear components, including tires, piston, and axle.

Abstract: A wheel design is provided for an aircraft landing gear wheel that is configured to maximize the space available within a landing gear wheel well to support a motor driver assembly that drives the aircraft wheel when the aircraft is on the ground. The wheel includes inboard and outboard support walls that are spaced apart a selected distance along the wheel axle so that the motor driver assembly components are substantially completely contained within the wheel space defined by the support walls. The preferred motor driver assembly includes an electric motor and a gear and clutch assembly operatively connected to the wheel to drive the wheel and move the aircraft on the ground. The wheel and motor driver assembly described herein may be retrofitted in an existing aircraft wheel without changing existing landing gear components, including tires, piston, and axle.

Abstract: In broad terms the present invention is a semiconductor junction comprising a first material (102) and a second material (104), in which a surface of one or both of the junction materials has a periodically repeating structure that causes electron wave interference resulting in a change in the way electron energy levels within the junction are distributed.