Abstract: A method and system for beam steering of a spatially fixed microwave antenna array. The phase of radiating elements and hence the beam position is established by the relative positions of a microwave disc or scan network having concentric microstrip paths thereon and a mechanically driven rotating directional coupler. The directional coupler is the single point feed for the antenna array.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a solution consisting essentially of a dialkanolamine and a halogenated hydrocarbon carrier. The composition herein disclosed has been found to be most effective as preservatives for coating sundry substrates, especially gramophone or phonograph record surfaces whereby there is effected a marked reduction of record groove wear while substantially minimizing noise and harmonic distortion. The preferred composition herein contemplated and disclosed is one consisting essentially of a N-alkyl-substituted N,N-dialkanolamine and a halogenated hydrocarbon carrier, said dialkanolamine having the formula:(HOR.sub.1).sub.2 N--R.sub.2wherein R.sub.1 is alkylene selected from the group consisting of ethylene, isopropylene and propylene and R.sub.2 is alkyl having four to twenty carbon atoms.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a composition consisting essentially of low-molecular weight tetrafluoroethylene telomers, an antistatic agent, preferably in the form of a tertiary amine, and a volatile organic solvent, and removing the volatile solvent to produce a thin, dry coating upon said substrate. The compositions herein disclosed have been found to be most effective as preservatives for coating gramophone or phonograph records which provide marked reduction of record groove wear while substantially minimizing noise and harmonic distortion.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a solution consisting essentially of a dialkanolamine and a halogenated hydrocarbon carrier. The composition herein disclosed has been found to be most effective as preservatives for coating sundry substrates, especially gramophone or phonograph record surfaces whereby there is effected a marked reduction of record groove wear while substantially minimizing noise and harmonic distortion. The preferred composition herein contemplated and disclosed is one consisting essentially of a N-alkyl-substituted N,N-dialkanolamine and a halogenated hydrocarbon carrier, said dialkanolamine having the formula:(HOR.sub.1).sub.2 N--R.sub.2wherein R.sub.1 is alkylene selected from the group consisting of ethylene, isopropylene and propylene and R.sub.2 is alkyl having four to 20 carbon atoms.

Abstract: A radio frequency antenna structure is disclosed wherein a raised pedestal portion of the ground plane surface is provided and above which pedestal portion a microstrip radiator is disposed. The microstrip radiator is thus disposed on a pedestal at a predetermined distance above the base ground plane to produce mirror image or apparent radiating aperture(s) therebelow. The combined radiation pattern from the real radiating aperture(s) and the mirrored image(s) thereof produces an increase in radiation power at low pointing angles located near the ground plane, thus producing a wider radiation beam without sacrificing radiation efficiency. This form of raised pedestal microstrip radiator is especially useful in phased arrays where it is desired to steer the beam of the array to angles near the ground plane itself.

Abstract: Apparatus for providing extreme pitch trim configurations for aircraft capable of flying at low-speeds, and particularly aircraft having blown primary lift-producing surfaces. The apparatus includes a movable horizontal stabilizer to provide pitch trim and an elevator pivotally attached to the horizontal stabilizer to provide transient pitch control. Control of the elevator movement is provided by a control tube extending from a horn attached to the elevator to a bell crank member attached to the horizontal stabilizer. The bell crank is also connected to a push tube movably attached to the airframe and arranged to be aligned with the pivot axis of the horizontal stabilizer in the neutral position. Thus, the horizontal stabilizer may be pivoted around its mounting axis to provide substantial pitch trim while concurrently maintaining the range and symmetry of elevator movement.

Abstract: A composition and method of preparation are herein described for molten release and parting compositions adaptable for use in glass-forming operations. The novel composition comprises an aqueous dispersion of a mixture of a solid lubricant, a water-soluble silicate binder, a setting agent, and a water-soluble phosphate. A preferred composition comprises a mixture of flake graphite, boron nitride, sodium silicate, zinc oxide and potassium phosphate tribasic.

Abstract: Leader strip for motion picture films is described which is composed of a substrate of cellulose acetate or polyester, a gum-removing layer comprising an organic binder selected from the group consisting of cellulose esters, polyurethanes, polyacrylonitrile, copolymers of acrylonitrile and vinylidene chloride, and epoxy resins, a gum-shearing agent of finely divided polymeric particles, said agent being bonded by the organic binder to the substrate, said gum-shearing agent being a member selected from the group consisting of polyesters, polyamides, polyimides and polyolefins, said polymeric particles having a size less than about five mils.

Abstract: A broadband antenna in the form of a multiple element interlaced dipole array is mounted on a thin elongated strip of dielectric material which is mechanically flexible, light weight and electrically small. Each dipole has a first tapered radiator section with an inductive loading section electrically connected to one end of the tapered radiator section. A capacitive end-loading section is connected to the inductive loading section. Second tapered radiator sections are joined to one another by a second inductive loading section. The inductive loading sections increase the effective electrical length of the first and second tapered radiators, respectively. A UHF gap filling conductor is connected to each of the dipoles to suppress grating lobes at the high-frequency end of the frequency spectrum received by the antenna.

Abstract: A sightless indicating system and method is disclosed that is useful as an indicating device for diverse equipment, including equipment such as an electronic calculator, and is particularly useful by a blind person. When utilized as a part of an electronic calculator, a standard calculator keyboard is modified to include a sign key and an output key so that an operator can initiate output indications and determine the sign of such indications in addition to initiating the customary numerical and function inputs. The customary numerical and function inputs are processed in conventional manner except that the calculator output is converted to a sightless indicating form, such as audible signals indicative of output.

Abstract: Method and composition for improving lubricity, abrasion resistance, and lowering the coefficient of friction of substrates such as photographic film, magnetic surfaces and other recording elements by applying to such substrates a solution comprising tetrafluoroethylene telomer and a copolymer of vinyl chloride and trifluorochloroethylene in a volatile solvent, drying and removing the excess, and substrates so lubricated.

Abstract: A conformal microstrip antenna structure formed by a plurality of separated spaced-apart electrically conducting elements on a dielectric substrate overlying a ground plane. The innermost edges of the separated conducting elements define two sets of two intersecting radiators which are fed by microstrip transmission circuits disposed within the space between the separated conducting elements to individually feed the various radiators and/or segments thereof from the common feed point. The dimensions of the conducting elements also determine the resonant frequency of the radiators and their relative phases such that dual frequency operation as well as circular and/or elliptical polarization of the received/transmitted electromagnetic radiation can be conveniently achieved.

Abstract: A composition and method of preparation are herein described for molten release and parting compositions adaptable for use in glass-forming operations. The novel composition comprise a mixture containing tungsten disulfide, a silicate and a setting agent. A preferred composition comprises a mixture of tungsten disulfide and graphite with sodium silicate and zinc oxide as a setting agent.

Abstract: Method and composition for improving lubricity, abrasion resistance, and lowering the coefficient friction of subtrates such as photographic film, magnetic surfaces and other recording elements by applying to such substrates a solution comprising tetrafluoroethylene telomer and a copolymer of vinyl chloride and trifluorochloroethylene in a volatile solvent, drying and removing the excess, and substrates so lubricated.

Abstract: A plurality of range increments are sequentially pulse-illuminated and energy reflected therefrom is received by a gated light amplifier. Timing circuitry sequentially varies the range viewed, by adjusting the time between illumination and gating on of the light amplifier to achieve enhancement, suppression or apparent uniform illumination of preselected range increments such that all ranges of interest are viewed by the light amplifier within a single integration period of a recording device.

Abstract: A microstrip antenna structure is provided wherein a plurality of relatively narrow elements, resonant in their longer dimensions, are organized into two staggered or offset sets of interleaved elements with each set being fed from opposite sides of the structure through a corporate microstrip feed line from a common feed point. The aligned radiating ends of the two offset sets of elements simulate four line sources of radiation. The preferred embodiment produces an efficient end-fire radiation pattern from this relatively compact structure which may, in turn, constitute an individual end-fire radiator in a larger array structure.

Abstract: A dual slot antenna assembly is disclosed herein and generally includes a pair of concentrically positioned and radially spaced cylindrical conductors defining a pair of circumferential slots which are longitudinally spaced one-half wavelength apart at the anticipated operating frequency of the antenna device. An electrical signal feed assembly is connected with the conductors for exciting the slots so as to provide overlapping radiation patterns emanating in the same direction.