Abstract:
An open ocean moor is disclosed for use at comparatively shallow ocean depths. The moor consists of a buoy floating on the surface which is fastened to an anchor on the bottom by means of a flexible tether formed of a plurality of linked sections of highly elastic material such as rubber of relatively large crosssectional area. The elastic sections are formed with heavy loops or eyelets at each end, and adjoining sections are connected by means of a link formed of two mating double grommet assemblies which, preferably, are also formed of mating configuration with respect to the loops to minimize stress concentrations. An electrical cable which is connected to various underwater instruments extends from the buoy to the anchor. This cable is supported on the flexible tether line by means of separate cable clamps on the links. A substantial amount of slack must be maintained in the electrical cable to allow for stretching during periods of high wave action without danger of pulling the cable taut. The electrical cable is fastened to the anchor and to the buoy by means of cable termination devices of a type known in the art.
Abstract:
An electromagnet is arranged with a gyro so that eddy currents generated by movement of a conductor in the field of the magnet provide a precessionaly torque, a component of which decelerates or opposes gyro rotation when the spin axis of the gyro is not coincident with the magnet axis. When said axes are coincident, no further precessional and decelerating torques are provided.
Abstract:
A system for guiding vertical flight of an aircraft to a predetermined aimpoint and including means for displaying for pilot information the angle between the line of sight of the craft to the predetermined aimpoint and the horizontal, the ground distance from the aircraft to the predetermined aimpoint, the ground speed of the aircraft, the time to reach the aimpoint and the angle between the aircraft velocity vector and the horizontal. The craft is guided during vertical maneuvers in response to a signal corresponding to the angle between the line of sight of the aircraft to the predetermined aimpoint and the horizontal, a signal corresponding to the angle between the aircraft velocity vector and the line of sight of the aircraft to the predetermined aimpoint, and a signal corresponding to the angle between the aircraft velocity vector and the horizontal.
Abstract:
Gyro compassing apparatus and method for automatically providing a reference position for ground based vehicles. A gyro is displaced about its output axis and said displacement is damped until a steady state condition exists at the reference position.
Abstract:
A digital display device is disclosed for displaying increments of mechanical movement, which includes a movable piston member having an ordered series of numerals inscribed thereon along its longitudinable axis and disposed in a bore having a window adapted to register with individual numerals on the piston. The piston position in the bore is controlled by venting of fluid pressure on one end thereof which is normally applied to both the ends with this venting in turn controlled by registry between a series of ports on a movable control plate and a series of ports in the bore wall which have a vernier spacing relationship therebetween so that a slight incremental movement of the valve plate produces a much larger movement of the piston in the bore. When combined with a similar second piston and bore arrangement controlled by a simple porting control performed by the same control plate, a digital display of control plate incremental movement in units and tenths of units of these increments is provided.
Abstract:
A method for preparing a program tape for simultaneously controlling both heads of a two-head machine, the head path segments being placed on the tape in order of absolute time at completion.
Abstract:
A stored energy gyro wherein pressurized air is contained in a chamber surrounded by the gyro rotor. Rotor speed is obtained by rupturing a pressure seal in the chamber, with the escaping gas being directed through vanes in the rotor for providing the necessary spin force.
Abstract:
A thrust bearing arrangement is disclosed for a grinder wheelhead of the type that is rotatably mounted on a fixed central shaft, and comprises locating the thrust surfaces on a separate portion of the housing proximate the grinding wheel rather than on the fixed central shaft in order to minimize errors due to thermal expansion of the fixed central shaft.
Abstract:
An induction coil assembly includes circuits photoetched on metallic laminates bonded to a flexible substrate. The substrate is wound on an arbor and pinned, after which it is removed from the arbor, impregnated and machined to provide an induction coil having close mechanical and electrical tolerances.
Abstract:
The inventive microwave filter is based upon the utilization of a prototype filter of known type, and a recognition of the properties of microwave C-sections, and parallel coupled line capacitance arrays. A prior art filter is chosen as a prototype filter and is partitioned into a general equivalent circuit derived by applying electrical constraints to the standard equivalent circuits for microwave C-sections and parallel coupled line capacitance arrays. A set of general equations is then written for the equivalent circuit, and by using the equations it is possible to design filters having a wide range of desired filter characteristics simply by substituting the values from the prototype filter into the equations. It is therefore possible to construct a wide variety of filters from a few standard parts. Strip line filters can also be made utilizing the general equations.