Abstract: A modular and compact air conditioning system is designed to be conveyed by a ground support equipment cart and to occupy minimal space within the cart. The system is constructed within a rectangular frame supporting top, bottom, left side, right side, front side, and back side panels. The top and back side panels contain thin air conditioner condensers. One of the left and right side panels contain an air outlet, and the other contains an air inlet and a duct that may be connected to an airplane to provide cooling air to the airplane. A condenser fan is mounted within the rectangular frame and is arranged to draw outside air in through the condensers and to blow the air out through the air outlet.

Abstract: A ground support equipment air conditioning system detachably connects to a port on an airplane. An air conduit connects an air intake and filter to a coupling that is adapted to be connected to one end of an air duct or hose the other end of which is adapted to be connected to an airplane's port. A variable speed blower in the air conduit has its speed varied by a controller to regulate the pressure supplied to an airplane. This controller receives as inputs the pressure sensed by a pressure sensor connected to the air conduit adjacent the coupling to sense the pressure of air passing into the airplane and also a setpoint pressure which can be varied to match the requirements of different types or classes of airplane. First and second air conditioners each include a circular refrigerant conduit channeling refrigerant through a compressor, a condenser, an expansion valve, and an evaporator.

Abstract: A ground support equipment air conditioning system detachably connects to a port on an airplane. An air conduit connects an air intake and filter to a coupling that is adapted to be connected to one end of an air duct or hose the other end of which is adapted to be connected to an airplane's port. A variable speed blower in the air conduit has its speed varied by a controller to regulate the pressure supplied to an airplane. This controller receives as inputs the pressure sensed by a pressure sensor connected to the air conduit adjacent the coupling to sense the pressure of air passing into the airplane and also a setpoint pressure which can be varied to match the requirements of different types or classes of airplane. First and second air conditioners each include a circular refrigerant conduit channeling refrigerant through a compressor, a condenser, an expansion valve, and an evaporator.

Abstract: A modular and compact air conditioning system is designed to be conveyed by a ground support equipment cart and to occupy minimal space within the cart. The system is constructed within a rectangular frame supporting top, bottom, left side, right side, front side, and back side panels. The top and back side panels contain thin air conditioner condensers. One of the left and right side panels contain an air outlet, and the other contains an air inlet and a duct that may be connected to an airplane to provide cooling air to the airplane. A condenser fan is mounted within the rectangular frame and is arranged to draw outside air in through the condensers and to blow the air out through the air outlet.

Abstract: A sensor system comprised of a diffuse light source and a sensor mounted on a transparent layer of material that is adjacent to a fluid. The refractive index of the transparent layer is greater than the refractive index of the fluid, causing a portion of the diffuse light source to be reflected from the interface of the transparent layer and the adjacent fluid. A sensor is placed at a location to intercept the reflected light. The diffuse light source and the sensor are optically coupled to the transparent layer with a transparent material wit a refractive index greater than that of the fluid. A light absorbing coating is placed ante surface of the transparent layer in order to absorb extraneous light from internal scattering of light from the fluid and light external to the sensor system.

Abstract: A sensor system comprised of a diffuse light source and a sensor mounted on a transparent layer of material that is adjacent to a fluid. The refractive index of the transparent layer is greater than the refractive index of the fluid, causing a portion of the diffuse light source to be reflected from the interface of the transparent layer and the adjacent fluid. A sensor is placed at a location to intercept the reflected light. The diffuse light source and the sensor are optically coupled to the transparent layer with a transparent material with a refractive index greater than that ofthe fluid. A light absorbing coating is placed on the surface ofthe transparent layer in order to absorb extraneous light from internal scattering of light from the fluid and light external to the sensor system. The light absorbing coating may be applied in a manner that masks the light sensor region in order to vary the sensor's output relative to the fluid refractive index or concentration.

Abstract: A sensor system including a first layer having first and second surfaces and a first index of refraction, a second layer having a second index of refraction which is less than the first index of refraction, a mechanism for generating a first diffuse light beam which passes through the first layer from the first surface to the second surface, and a mechanism for sensing a portion of the first diffuse light beam reflected back through the first layer to the first surface as an incident of the first diffuse light beam impinging upon the second layer.