Abstract: The invention provides an arrangement for reducing waveform errors such as errors in phase or amplitude in output pulses produced by pulsed power output devices such as klystrons by generating an error voltage representing the extent of error still present in the trailing edge of the previous output pulse, using the error voltage to provide a stored control voltage, and applying the stored control voltage to the pulsed power output device to limit the extent of error in the leading edge of the next output pulse.

Abstract: A cooling system is provided for maintaining a preselected operating temperature in a device, which may be an RFQ accelerator, having a variable heat removal requirement, by circulating a cooling fluid through a cooling system remote from the device. Internal sensors in the device enable an estimated error signal to be generated from parameters which are indicative of the heat removal requirement from the device. Sensors are provided at predetermined locations in the cooling system for outputting operational temperature signals. Analog and digital computers define a control signal functionally related to the temperature signals and the estimated error signal, where the control signal is defined effective to return the device to the preselected operating temperature in a stable manner. The cooling system includes a first heat sink responsive to a first portion of the control signal to remove heat from a major portion of the circulating fluid.

Abstract: A high precision controller for an alternating-current multi-phase electrical motor that is subject to a large inertial load. The controller was developed for and is particularly suitable for controlling, in a neutron chopper system, a heavy spinning rotor that must be rotated in phase-locked synchronism with a reference pulse train that is representative of an ac power supply signal having a meandering line frequency. The controller includes a shaft revolution sensor which provides a feedback pulse train representative of the actual speed of the motor. An internal digital timing signal generator provides a reference signal which is compared with the feedback signal in a computing unit to provide a motor control signal. In the preferred embodiment, the motor control signal is a weighted linear sum of a speed error voltage, a phase error voltage, and a drift error voltage, each of which is computed anew with each revolution of the motor shaft.

Abstract: A vertical axis wind turbine is provided based on my co-pending application Ser. No. 890,998, filed Mar. 28, 1978, now U.S. Pat. No. 4,204,805. In this improved system the centrifugal forces of rotation produce no bending moments in the air foil spars. Also, the center of mass, the center of useful aerodynamic pressure and the center of main bearing supported are located at the same point to the support structure.

Abstract: An improved type of wind turbine comprising a rotating assembly attached to a central hub, which is supported for rotation in a horizontal plane about a vertical axis, in a bearing on top of a tower of selected elevation. The rotating assembly comprises at least two radial spokes or arms positioned from each other at equal angles in a horizontal plane. The outer ends of the arms are attached to a connector assembly which generally is in the form of a U-shaped member lying in a vertical plane. A long thin vertically oriented airfoil is mounted on the ends of each connector, the plane of the chord of the airfoil is perpendicular to the axis of the arm which supports it. A torque shaft is attached at the axis of the hub and passes axially downwardly through the tower to an energy conversion device mounted in a housing on the base, which supports the tower. The tower may be guyed by means of cables, etc. which are attached below the level of the rotating assembly.

Abstract: A windmill for use in areas having severe climates, comprises a substantially spherical assembly supported above the ground on a plurality of legs. The structure is divided into two hemispheres. The lower hemisphere is rigidly supported by the legs, and the upper hemisphere is adapted to rotate coaxially with respect to the lower hemisphere. One side of the upper hemisphere is cut away to form an air scoop which when directed into the wind causes the wind to flow into the scoop and to be deflected downwardly into the lower hemisphere. The lower hemisphere is truncated at its lower end by a horizontal plane of selected diameter and the wind flowing into the scoop flows vertically outward from the exit opening in the bottom of the lower hemisphere. An axial structure supports a shaft carrying a multi-bladed turbine of selected diameter centered in the exit opening. The shaft is connected to a generator inside of said axial structure. Means are provided for steering the air scoop into the wind.

Abstract: A vertical axis windmill is taught having a horizontal base, preferably circular in configuration, sitting on the earth's surface, a dome having a horizontal bottom spaced above the base supported on a plurality of columns to provide an annular space below the dome bottom, a conical baffle positioned on the base below the dome, the conical axis being coincidental with the vertical axis of the dome, the dome having a circular roof orifice therein coaxial with the axis of the conical baffle, a vertical shaft supported coaxially by the conical baffle and an impeller affixed to the shaft and positioned in the dome circular orifice. Wind blowing relative to the windmill causes a lifting force by the aerodynamic effect of the dome, the wind passing upwardly through the annular opening and upwardly through the dome orifice, imparting rotational energy to the impeller. Power using apparatus such as generators or the like may be attached to the rotating vertical shaft.