Abstract: An engine bleed air system having one or more taps in the compressor section of an aircraft engine, for example a low pressure tap and a high pressure tap. The low pressure tap is fluidly connected to the compressor of a turbo-compressor and the high pressure tap is fluidly connected to the turbine of the turbo-compressor. A bypass line connects the high pressure air to the outlet of the compressor, with a heat exchanger used to remove excess heat from the bypass line. An additional heat exchanger is used to remove any excess heat from the compressed air, dumping the heat to a fan stream or to the expanded air exiting the turbine. The system is controlled to minimize the amount of high pressure air extracted from the engine.

Abstract: An engine bleed air system having one or more taps in the compressor section of an aircraft engine, for example a low pressure tap and a high pressure tap. The low pressure tap is fluidly connected to the compressor of a turbo-compressor and the high pressure tap is fluidly connected to the turbine of the turbo-compressor. A bypass line connects the high pressure air to the outlet of the compressor, with a heat exchanger used to remove excess heat from the bypass line. An additional heat exchanger is used to remove any excess heat from the compressed air, dumping the heat to a fan stream or to the expanded air exiting the turbine. The system is controlled to minimize the amount of high pressure air extracted from the engine.

Abstract: A multiple accessory support bracket that mounts a plurality of external accessories for an auxiliary power unit (APU) so that all the external accessories may be mounted to the APU in a single operation.

Abstract: A foam plane apparatus for planing foam includes a frame, a cutting element mounted rotatably on the frame, and a motor on the frame for rotating the cutting element as a user moves the cutting element across a body of foam for purposes of planing the foam. The cutting element includes a drum that is directly coupled to the motor, and a plurality of longitudinally extending rows of radially protruding teeth on the drum that are accomplished with elongated blades mounted in slots in the drum. A retainer collar engages the blades in order to removably retain the blades in the slots while facilitating blade replacement. The motor is arranged on the frame to serve as one of two handles for the apparatus.

Abstract: The present invention is an electrical power generating system and method of operation. An inverter (18) is responsive to a DC potential for producing a fundamental frequency alternating current output such as 400 Hz. three-phase AC including harmonics. A first harmonic suppression filter (22), coupled to the alternating current output, produces an output having reduced harmonics compared to the harmonics in the input of the inverter. An isolation transformer (61) has a primary coupled to an output (24) of the first harmonic filter, a first secondary for outputting the alternating current at the fundamental frequency, and a second secondary for also outputting the alternating current at the fundamental frequency. A first rectifier (65) is coupled to the output (63) of the first secondary and produces direct current including harmonics produced by the rectification.

Abstract: A cable guide mechanism for evenly winding a cable for an electric powered vehicle onto an on-board reel having a cable guide that is reciprocated across the reel to neatly and closely wind the cable onto the reel. The cable guide is driven by a drive linkage to reciprocate in proportion to rotation of the take-up reel. The drive linkage includes a lever having a fixed pivot end and a free end attached to the cable guide. An eccentric crank driven by the rotation of the take-up reel is attached to a connecting rod that connects the end of the crank to an intermediate point on the lever arm. Accordingly, the range of reciprocation of the cable guide is substantially greater than the diameter of the path swept out by the crank, and the drive linkage may be contained in a compact package.

Abstract: A hinge assembly for an articulated vehicle having front and rear frame portions joined at a pair of vertically aligned hinges. Each hinge includes a similar roller bearing assembly attached to the front frame portion and having a rotatable protruding trunnion. The rear frame portion includes recesses for receiving the trunnions and trunnion caps for retaining the trunnions. The trunnion of each bearing assembly includes a shoulder pin with a first bearing cone placed against the shoulder and a second bearing cone spaced apart from the first cone. A spacer ring received on the pin is biased against the second cone by an end cap secured to the end of the pin. A shim pack between the end cap and the end of the pin limits the amount by which the space between the cones may be to limit and control the pre-load of the bearing assembly.