Abstract: Pentadienyl ether terminated polyethers and maleimidomethyl carbonate terated polyethers are selectively combined via a Diels-Alder reaction at room temperature. The resulting aliphatic copolyethers are characterized by having at least two chemically combined N(1)-oxycarbonyloxymethyl-4-oxymethyltetrahydrophthalimido groups interposed between polyether radicals within the copolymer chain. The aliphatic polyether precursors terminated with pentadienyl ether groups are synthesized by reacting an aliphatic hydroxy terminated polyether with a metal alkoxide to form at least the bis alkoxide derivative. The alkoxide derivative is then reacted with a halogen substituted pentadiene yielding the bis or tris pentadiene ether terminated polyether for use in the copolymer synthesis.

Abstract: An antenna array for combining in space microwave energy from a number of cillators, such as IMPATT diodes, which are controllable by injection locking. The array has elements individually driven by the oscillators, but an injection locking signal is provided in the usual manner only to the oscillator of a central element. The other oscillator are injection locked through mutual coupling between the central element and the other elements so that coherent radiation is output by the array. The radiation may be steered by phase shifters between the elements and their oscillators.

Abstract: A method of preparing 4,6-dinitro-5,7-diaminobenzofuroxan from 4,6-dichloenzofuroxan.

Abstract: An attenuator for high power laser beams, the attenuator has an annular b dump through which the beam passes diametrically and in which the beam passes successively through a pair of pivoting transmissive and reflective element. These elements are individually mounted on intermeshed gears so that the elements are adjustable through equal and opposite angles. At each element a portion of the beam is reflected toward the dump and a portion transmitted, the relative energy in each portion being determined by the angle of the elements to the beam so that adjustment of this angle determines the amount of attenuation. The beam is offset oppositely by refraction at each element so that the attenuator does not change the beam path. The elements are, preferably, elements commonly used as edge filters, that is, interference filters having an abrupt monotonic transition with wavelength from reflection to transmission.

Abstract: A rotary solenoid providing opposite direction pivotal movement on opposite olarity d.c. energization. The solenoid has a pivoting shaft from which a permanent magnet armature having ends of opposite magnetic polarity extends transversely and oppositely. The armature is disposed between a pair of pole pieces each of which extends along the armature between its ends. The pole pieces are oppositely electromagnetically magnetized by a d.c. winding so that reversing the electrical polarity of the winding reverses the polarity of each pole piece and its attraction or repulsion of the armature ends. The pole pieces are opposite arms of a U-shaped ferromagnetic structure on which the winding is centrally wound, and the shaft is supported by a bearing in a nonferromagnetic bridge between the pole pieces.

Abstract: Preprocessing of a noisy image, such as is obtained by a raster scan, by tracting the median of the pixel values of one or more lines from the medians of predetermined pixel neighborhoods.

Abstract: A method for determining the presence, during deposition of a first thin m layer, of a substance which escapes when the layer is cooled and transferred from its deposition environment for analysis to determine the presence of the substance. The layer is first covered with a second layer of a material which captures the escaping substance. This second layer is then covered with a cap layer of a substance which seals the second layer against contamination, as from the atmosphere during transfer. The layered structure, with the escaped substance retained in the second layer, is then analyzed, as by sputter depth profiling and Auger electron spectroscopy, to determine the presence in the second layer of the escaped substance and thus determine the presence of this substance during deposition of the first layer.

Abstract: A method and processor for varying the size of a digitized video image in bstantially two video frame times by transforming successive lines of the image along one axis and then transforming successive lines of the image along the other axis.

Abstract: A connector between a stripline circuit and a coaxial conductor disposed at right angle. The connector provides a low VSWR at relatively high frequencies and is attachable without soldering or separation of the circuit layers and with access from only one side of a first one of the circuit ground plane plates. This plate and an adjacent first outer dielectric circuit board have openings exposing a conductive stripe on a center board. The second plate is exposed by smaller openings in an adjacent second outer board and the center boards, and the connector has a body extending from the coaxial conductor to the second plate. The body has an outer conductor flatly and axially contacting the second plate and having a flange fitted to the smaller openings. The body has a tab extended radially from a central conductor and outwardly of the flange to engage the stripe. The body has a dielectric disposed between its conductors and extending axially between its ends and radially about the tab to the flange periphery.

Abstract: A two axis adjustable optical mount capable of lock down after alignment is rovided by a dual ring arrangement which represents a segment of two concentric spheres. An optical element such as a lens or mirror is held within an inner ring by a retaining ring. The inner ring fits within the outer ring to form a partially concentric sphere arrangement across the diameter. Orthogonally mounted set screws can be used to adjust the relationship of the inner ring to the outer ring and a collar screw clamp is used to freeze the relationship between the inner and outer rings once the desired orientation is achieved.

Abstract: Optical devices which reduce the risk of damage by high energy laser pulses re made by applying particles to the surface of optical components. The particles serve as plasma initiation sites. The particles are made of material capable of producing large numbers of free electrons when illuminated above a preselected power level. Above the preselected power level, transmittance or reflectance of the optical component is limited by the plasma created by the free electrons.

Abstract: A fluid connection for a container and a method of making the connection is escribed. The connection is provided subsequent to the manufacture of the container according to the teachings of the present invention.

Abstract: A desiccant containing plug for insertion through a launcher tube into a sle containing tube which is coaxially received in one end of the launcher tube. The plug has a perforate end which extends into the container tube and which is circumscribed by a humidity sealing ring fitted to the container tube interior. The plug has a valve disk disposed at the perforate end and actuated from the closed end to open and close communication through the perforate end to the desiccant.

Abstract: A programmable telemetry word selector includes a scanning memory storing, or each of a number of analog outputs of the selector, a variable identifying tag and a data conversion code for the variable. The selector is constructed to compare the stored tags with successive tag words provided by a telemetry data compressor and, when a match is found, perform on a corresponding data word from the compressor digital data conversions specified by the code and direct the result to the corresponding analog output. The word selector is constructed to perform the scanning, digital conversion steps, and analog conversion concurrently so as to handle tags and data provided relatively rapidly by the compressor. The selector includes a storage memory for a plurality of sets of the scanning memory contents and has a microcomputer for generating and modifying the sets to reconfigure the selector for different tests providing telemetered data.

Abstract: Oxazole dyes and certain quaternary salts of these compounds having a formula as follows: ##STR1## are useful as visible-wavelength lasing dyes. These dyes are useful in solution with non-interferring polar solvents, such as low molecular weight alcohols, H.sub.2 O and mixtures thereof, to form lasing media useful in dye lasers.

Abstract: An antenna system for adaptive steering in azimuth and elevation. The sys utilizes a cross-shaped, planar, microstrip array with a central receiving element and with arms of parasitic elements having individual phase shifters which are simultaneously adjusted. In steering a null, the phase shifters are initially adjusted in a "random search" mode and are then adjusted in a "guided random search" mode.

Abstract: Finely divided metal sulfide powders of uniform size are produced at low temperatures by a method of adding solutions of organometallic compounds to an organic solvent saturated with H.sub.2 S. The solvent is kept saturated with H.sub.2 S by adding H.sub.2 S at a rate greater than that for the organometallic compound.

Abstract: A mounting for an object processed at a predetermined temperature in an uahigh vacuum chamber having a stainless steel wall. The mounting has a stainless steel tube welded to the wall and opening through it and has an oxygen-free-high-conductivity copper finger extended from the tube to receive the object. At the junction of the tube and the finger, the tube bears an annular knife edge which engages a flat surface of the finger, and an ultrahigh vacuum seal is established by a collar and bolt coupling which draws the finger against the knife edge. The temperature of the finger and the object are then controlled and measured by cryogenic liquids, electrical heaters, and sensors inserted through the tube into contact with the finger.

Abstract: A binary solvent for liquid dye laser systems comprising a surfactant having a hydrophobic end and a hydrophilic end in a viscous polar solvent provides a method of improving the output, efficiency and lifetime of laser dyes, particularly in non-flowing liquid dye laser systems.

Abstract: A method of obtaining data for mathematical characterization of a wave surface by transmitting a beam toward the surface so that the beam is reflected from an element of the surface in a direction determined by the instantaneous, two dimensional slope of the element. The reflected beam impinges on a screen as a spot whose time varying coordinates correspond to the time varying slope of the element. These coordinates are captured by scanning the screen with a raster scan which controls counters identifying the spot position. The instantaneous distance is measured by a capacitance probe to relate the captured coordinates to the corresponding angles of reflection by appropriate trigonometric relations.