Abstract: A method of operating a signal recording and reproducing apparatus is disclosed whereby generally continuously and noise-free transfers of signal information are obtained while reproducing the information from a magnetic tape being transported at a changing speed. The apparatus is of the type which utilizes transverse positioning of the transducing head to accurately follow a track during reproducing. While the tape is transported at speeds other than the normal record and reproduce speed, transport derived signals are employed to control the tape transport servo. When the normal speed is attained, the reproduced signal is detected to determine whether synchronous reproduction conditions have been achieved. If synchronous reproduction conditions are not achieved, the transducing head is moved to a new track to effect synchronous reproduction of the signal information.

Abstract: A centrifugal compressor including a one-piece diffuser ring having a circumferentially extending vaneless diffuser space for receiving compressed gas exiting the compressor impeller, and for guiding the compressed gas to a plurality of outwardly extending and circumferentially arranged diffuser channels each of generally circular cross-section.

Abstract: A method and apparatus is disclosed for controlling the sampling of a composite analog color video signal so that the analog signal is sampled at precise locations relative to the phase of the color subcarrier of the color video signal in the absence of modulation. The invention thereby enables a digitized signal having a constant phase relationship relative to the unmodulated subcarrier phase to be provided which can be advantageously used in magnetic recording and reproducing apparatus. Since the constancy of the location of the samples relative to the phase of the color burst is maintained prior to recording, there is no phase error that would pose a problem during reproducing of the signal.

Abstract: A horizontal scan linearization circuit generates a linear ramp voltage during the active picture scan interval, which is compared to the non-linear ramp current of a cathode ray tube yoke circuit. The difference signal is fed back to the yoke circuit via a damper diode and is selectively added to the non-linear yoke current to correct the non-linearity.

Abstract: Methods and apparatus for heating or cooling heat exchanger manifolds and side bars during transient operation to control structural deformation and resultant stresses. Special internal passages are provided in the manifolds and side bars of a plate-and-fin heat exchanger through which heated air is diverted during operation of the heat exchanger, thus serving to stabilize the temperature of selected portions of the heat exchanger in line with operating temperatures of related heat exchanger elements. This serves to minimize thermal gradients and resultant thermal stresses in the overall heat exchanger structure.

Abstract: Unidirectional fiber-reinforced matrix material bars are stacked to form a lightweight, high strength hub for a composite material flywheel.

Abstract: A disconnect for disengaging an accessory rotor from a driving engine and quickly decelerating the accessory rotor to a stop.

Abstract: A shaft seal ring arrangement for turbochargers comprises a pair of vented seal rings for preventing passage of bearing lubricant into the turbocharger turbine housing.

Abstract: A thyristor switch system completes a circuit with a much higher rate of current rise than a thyristor alone is capable of delivering. The invention limits the current through the load during the "priming" period of the thyristor that precedes the application of a high current pulse through the load.

Abstract: Arrangements for supporting a heat exchanger core within a steel frame structure by a hanger system utilizing flexible members pivotably coupled to overhead support beams. Balancing beams are employed to equalize the load transmitted through the system to the support beams. These support systems permit the heat exchanger core to expand in all directions from thermal growth without restraint relative to the frame structure, thereby minimizing thermal fatigue.

Abstract: An energy transfer machine including a stator ring carried in a casing forming a toroidal fluid path between a fluid inlet and a fluid outlet. A rotor has a blade cascade coacting with fluid in the path to transfer energy therebetween. Apparatus and methods are disclosed for controllably unloading the energy exchange between the rotor and the fluid.

Abstract: A control actuator for a turbocharger comprises a diaphragm-displaced actuator rod projecting outwardly from an actuator housing through a spring-biased retainer which sealably permits axial and angular rod movement for variably positioning a turbocharger wastegate valve.

Abstract: A plate-fin heat exchanger construction including peripheral channels each receiving a mass for protecting the plates against stress failure.

Abstract: A crossover duct assembly for providing flow communication between multiple stages of centrifugal compressors and the like. The duct assembly includes inner and outer wall sections forming a continuous annular flow path between compressor stages for turning radially outward gas flow to a radially inward direction. The duct includes a thin vane diffuser section, a vaneless turning bend having an elongated wall geometry, and a deswirl vane section for enhancing smooth gas flow with minimum pressure loss.

Abstract: A control actuator for a turbocharger comprises a diaphragm-displaced actuator rod projecting outwardly from an actuator housing through a seal permitting axial and angular rod movement for variably positioning a turbocharger wastegate valve.

Abstract: An energy transfer machine including a stator ring carried in a casing forming a toroidal fluid path between a fluid inlet and a fluid outlet. A rotor has a blade cascade coacting with fluid in the path to transfer energy therebetween. Apparatus and methods are disclosed for controllably unloading the energy exchange between the rotor and the fluid.

Abstract: A plate-fin heat exchanger for transferring heat energy between heated air and relatively cold air, including elongated rounded surface hollow header bars traversing the cold air inlet for passing a portion of the hot air thereacross to prevent excessive ice formation.

Abstract: A pump for pumping a fluid such as a fuel having poor lubricating qualities, comprising a matched set of pumping gears carried on rotatable shafts, with said shafts mounted for rotation within matched sets of floating bushings.

Abstract: A device for floatably supporting a portion of a heat exchanger core to a shell for accommodating thermal expansion while damping oscillatory movement of the core.

Abstract: A combustor system for use with a turbocharged combustion engine comprises a combustor connected for continuous passage of engine exhaust gases. The combustor includes an integrated fuel control and purge system for supplying fuel to the combustor in response to engine operating conditions, and for purging fuel from the system when the combustor is shut down.