Abstract:
1,211,422. 422. Electrostatic charging apparatus. AUSTRALIA, DEPARTMENT OF SUPPLY, SECRETARY OF. May 14, 1968 [May 15, 1967], No. 22941/68. Heading G2H. An apparatus for uniformly charging an insulating surface 1, such as a xerographic surface, has at least one corona discharge point 3 positioned above a support 2 for the surface, means to apply a voltage between the discharge point 3 and the support 2, and means to apply cause relative movement between the point 3 and the support 2.
Abstract:
A method and apparatus for the control of growth of epitaxial alloy films onto a substrate. A uniformity measurement probe (5-6) scans the growing film and controls a corrector gun (9) directing a corrector beam (8) to the film. The probe (5-6) and gun (9) are correlated to determine the relevant characteristics of a point on the growing film and to apply a particular correction. Possible deposition alloys are cadmium, mercury and tellurium with the corrector beam being selected from one or more of these specie.
Abstract:
In order to reduce vibration in tracked vehicles operated at relatively high speeds a gear linkage is provided for the sprocket shaft of the sprocket wheel which engages the links of the endless tracks. The gear teeth of the gear linkage are shaped to provide a rate of change of the pressure angle such that the angular velocity ratio of the gear linkage and consequently the tangential velocity component of the sprocket is varied cyclically in a fixed phase relationship with the engagement sequence of the sprocket tooth and track link. This eliminates vibrations resulting from the fluctuating torques produced in the drive line driving the sprocket.
Abstract:
A heat shield for tanks comprising a deflector (1) hingedly connected to a support to be positioned over an area where a heat signature is emitted but spaced therefrom with loading means between the deflector (1) and the support (6) to position the deflector angularly to discharge gas from the area downward but displaceable about the hinge means (5) to discharge at least some gas upwardly, and arms (14, 15) one on each side of the deflector (1), each connected at one end to the support (6) by a pivot (17, 19) positioned generally normal to the hinge means (5) of the deflector (1) and each having its other end (21) projecting angularly outward toward the deflector (1) and engaging the deflector (1) remotely of the hinge means (5) so that the said deflector (1) and arms (14, 15) move synchronously when either the arms (14, 15) are displaced about the pivot pins (17, 19) or the deflector (1) is displaced about the hinge means (5) .
Abstract:
A macromolecular gun propellant charge comprising a block (1) having an elongated body of propellant with longitudinal spaced apart channels (2) extending therethrough, which the charge is arranged as a macromolecular block (1) of cylindrical shape adapted to fill the bore (8) of a cylindrical propellant chamber (7).
Abstract:
A method of improving the reception of broadband and narrowband signals by optimally processing the outputs of an array of sensor elements, either electromagnetic or acoustic, in which outputs are passed through channel splitters (block 1) and then a series of time delays (T) and weighting coefficients (W) before finally being summed, the weighting coefficients (W) being adaptively updated by using a set of quadratic constraints imposed on the weighting coefficients so that noise from other directions is optimally rejected.
Abstract:
An improved scanning device adapted to direct an image through a nodding mirror (1) to a collecting mirror (5) scanned in turn by a rotating scanner (8) in which the collecting mirror is a half spherical mirror (5) and the correcting elements are mirrors (6, 7) carried on a scanner (8) having its axis of rotation (9) normal to the optical axis (14) of the collecting mirror (5) and intersecting same whereby to direct the image generally along the optical axis (14) of the collecting mirror (5) to a fixed mirror (10) and thence to a detector (11).
Abstract:
A prismatic acousto-optic interferometer in which a light input is split into two parallel beams (2, 3) and the beams are independently modulated and then recombined, characterised by a pair of Kosters prisms (1, 8) placed back-to-back but spaced apart on a common axis to divide a light beam passed into a first Kosters prism into a pair of parallel light beams extending between the prisms, at least one of the parallel light beams (2, 3) being reflected out by a light splitter (6, 7), the light beams being combined in the second Kosters prism (8).
Abstract:
The method of measuring the optical scattering co-efficient of the ocean by means of a laser beam (15) from a platform (16) above the ocean surface (3) in which an ocean penetrating beam (15) is swept across the direct path of travel to the surface of the ocean (3) and through it to the ocean bottom (4) to be back-reflected to the ocean surface (3) and to a receiver on the platform (16) characterised by changing the field of view to alternately use a small and a large field of view and calculating from the larger field of view an estimate of the absorption co-efficient and from the smaller field of view an estimate of beam attenuation co-efficient.
Abstract:
A method and device for removing undesired jammer signals from desired signals which comprises forming a beam on the desired signal in an adaptive antenna array characterized by an orthogonalizer array (12) to receive digitised signals from the antennas, and pass signals to a beamforming array (14) and including a late jammer canceller array (16) and an intelligent controller (24) arranged to control weights (W) and select a row having the desired beamformed signal.