Abstract: A laser beam duct pressure controller system for maintaining a spatially uniform pressure in a flowing gas volume which is subjected to temporal pressure variations. This desired result is accomplished, with cooperating structural components (and gases therein) which eliminate the axial flow of a conditioning gas within the laser beam duct, by matching the time rate of change of the pressure of the flowing conditioning gas to the time rate of change of the pressure in the cavity of an operably associated laser beam turret.

Abstract: A testing apparatus for quantitatively measuring the creepability property of liquids, especially tracer liquids, such as penetrants and leak tracers. The preferred embodiment of the apparatus essentially comprises: a rotatable, cylinder-like shaped base member having a longitudinal indentation therein substantially in the shape of a "V", with a depression at the vertex of the "V"; and, a metal, rectangularly-shaped panel member having a plurality of adjacent, straight, parallel-spaced grooves therein which are perpendicular to the bottom end of the panel member, with the grooves having length markings therealong indicating the distance from the bottom end, and with the panel member positioned by its bottom end in a vertical-like angled attitude in the depression of the "V"-shaped longitudinal indentation in the rotatable base member. When the liquid to be tested for creepability capability is poured into the "V"-shaped base member indentation, the liquid creeps up the grooves in the panel member.

Abstract: A device for, and a method of, applying an incremental strain to a test specimen of a solid propellant which is at the stress-free temperature, while simultaneously subjecting the test specimen to an incremental temperature change above and below the stress-free temperature. The device includes a frame assembly in which a captive "strain multiplier" is used to apply the thermally induced loads to the test specimen of the solid propellant that is mounted within the device. Temperature changes, above or below the stress-free temperature, cause volume changes of the rubber members of the "strain multiplier" and result in the "strain multiplier" axially loading the mounted test specimen in simulation of the loading conditions that occur in a case-bonded solid rocket grain. When the temperature is raised, the rubber members expand and exert an axial compressive load on the mounted specimen; and, when the temperature is lowered, the rubber members contract and exert an axial tensile load on the mounted specimen.

Abstract: An imaging apparatus which permits the use of a transverse electrode electro-optic tunable filter (TEOTF), despite its obscured aperture, to produce a high quality image. The imaging apparatus includes a suitable conventional anamorphic input optical system in combination with a stacked plurality of TEOTFs in which the platelet of each TEOTF is made of an electro-optic material of a known index of refraction (such as CdS of an index of .about.2.4), and is clad between its surface and its electrodes with a material having a lower index of refraction than the platelet material (such as SiO.sub.2 of an index of .about.1.5).

Abstract: A device which is useable to determine whether a hole is straight (i.e., perpendicular) with respect to the planar surface of the workpiece in which the hole is formed. The device structually comprises a rotatable shaft member having a collar with a centrally-located bore in which is held a probe (i.e., a mandrel) that is to be inserted into the hole to be checked. The collar also has an off-set bore which holds a horizontally slidably movable plunger of the vertically reciprocating type. A dial indicator is operably connected to the plunger. To test the hole for perpendicularity, the probe is inserted in the hole; the collar is rotated completely around the hole, and, the plunger follows the surface around the hole. If there is no change in the dial indicator reading, the hole is straight. If there is a change in the dial indicator reading, the hole is not straight; and, the lowest reading is subtracted from the highest reading.

Abstract: A therapeutic preparation, and a process of using the preparation, for the control of tumor growth and immune diseases. The preparation is an immobilized cytotoxic enzyme system which is carried by an insoluble substrate that is administered into the mammalian subject by injection or implantation. The preferred embodiment of the preparation uses a polymerized albumin carrier containing immobilized glucose oxidase and peroxidase. The immobilized enzyme system is prepared in the form of small particles that can be administered either by implantation or by injection into tumor-bearing mammals. To date, antibacterial activity has been demonstrated only in vitro. Intraperitoneal injection into rats bearing Novikoff hepatomas or into mice bearing B16-F1 melanomas or L1210 (Lymphoid) tumors has resulted in the selected killing of tumor tissues. Several daily administrations are required to achieve complete destruction of the tumor.

Abstract: A translating rudder pedal system which includes a rudder pedal assembly and a reclinable, translationally movable, seat operably connected to the pedal assembly, with both the pedal assembly and the seat mounted in a vehicle, such as an aircraft. The system ensures that, irrespective of the movement and positioning of the seat, the feet of the user seated in the seat always remain in contact with the control pedals of the rudder pedal assembly.

Abstract: A windblast arm protector assembly for use by an occupant of an open-type ejection seat of an aircraft. The assembly includes, for each arm of the seat occupant, a full length fabric sleeve member which is independent of any garment body, which is a part of the seat's restraint system (rather than an item of personal protective equipment), and which is shaped and dimensioned from the shoulder area to its wrist area in the form of a flexed (i.e., bent) arm. During ejection of the seat and occupant together, the sleeve member is pulled forwardly and adjacent to the occupant's sides by associated co-acting components of the assembly, such that the arm is not extended into the windblast and is protected from it. Unlike the prior art, this arm protector assembly restrains the wrist area of the seat occupant's arm near the seat ejection handle, while the arm is restrained over its entire length. As a result, the windblast load is uniformly applied, and the restrained arm is protected from injury.

Abstract: A method of, and apparatus for, eliminating the error-causing heat convections of a liquid which is disposed between a warm cylindrical float that houses a navigational gyro and a cool cylindrical gyro case that houses the float. The method includes the performance of steps which result in raising the temperature of the gyro case to the temperature of the float. The apparatus includes a temperature controller assembly which further includes temperature sensitive resistors to ascertain the temperatures respectively, of the float and of the gyro case; a differential amplifier to ascertain the difference in the temperatures; and a heater coil surrounding the gyro case to heat the case to the higher temperature of the float.

Abstract: A detonator block which permits the explosion of a primary detonator and the resultant explosion of an associated primary detonating cord, but which at the same time prevents damage to or explosion of an adjacent secondary detonator and its associate secondary detonating cord.

Abstract: An inflatable, inert-gas purged welding chamber assembly ideally suited for use in welding workpieces made of a metal (e.g., titanium), or of an alloy, which is susceptible to atmospheric contamination during welding. The welding chamber of the assembly is defined by a collapsible, reusable, inflatable member (e.g., a polyethylene bag) that is releasably connected to a closeable opening in a wall member. The inflatable member, while in a collapsed condition and while containing the workpieces to be welded and the accessories therefor (e.g., a welding torch, extra tungsten electrodes, and filler wires) on a shelf protruding from the wall member, is purged of air (i.e., the ambient atmosphere) by the use of an inert gas (e.g., argon), thereby inflating the collapsed member and creating an inert gas environment in which the air-contaminable workpieces can be welded without fear of contamination.

Abstract: The top portion of a composite (boron filament/aluminum matrix) blade which is useable in a fluid flow machine is made more resistant to impact energy by forming a cavity in the boron filament layer of the tip portion of each laminate (or ply) of the blade, then filling each cavity with a resin, and then bonding together the laminates with the resin-filled cavities therein.

Abstract: A system to assist flap actuation of a convergent-divergent exhaust nozzle to overcome the high air loads on the flaps, so that the nozzle flaps can be properly positioned by the actuators. The structural members of the system are operatively associated with a controlled, air-pressurized, cavity positioned in the exhaust nozzle section. Pressurized air from the cavity acts against the flaps, and helps to overcome the load required to move them. The system is useful in any exhaust nozzle, and most particularly where the exhaust nozzle is two-dimensional, i.e., rectangularly shaped.

Abstract: An elastomeric bore seal, and a method of making and installing it. The seal is a fluid-impervious, thin-walled (0.025 inch), open-ended, cylinder-like member which is made of an expansible material that can withstand a wide range of temperatures (-65.degree. F. to +400.degree. F.) and that is to be bonded and thereby installed. The use of the seal is as a bore seal in an electrical machine not only provides an economical, reliable, leak-proof way of excluding stator cooling fluid from the rotor cavity, but also permits a significant reduction (26%) in the weight of the electrical machine and a correspondingly substantial reduction in the size of the machine itself.

Abstract: A universally fitting and reusable grip assembly for non-destructive and removable attachment to a pedal, such as a rudder pedal of an aircraft or flight simulator. The grip assembly includes two hingedly connected clamps whose frame members are fitted, respectively, over the top edge and under the bottom edge of the pedal, with clamp screws threadedly adjusted to secure the clamp frames to the pedal; and, an artificial pedal member which incorporates a load cell and which is attached to the lower disposed one of the two clamp frame members. The load cell measures the force applied to the pedal, such as by a pilot's foot or other sources, including a remotely located, interconnected, conventional load applying device. If the grip assembly is used on a rudder pedal of an aircraft or flight simulator, the grip assembly need not be removed in order to fly the aircraft (or flight simulator) in the conventional manner.

Abstract: A system for testing, on the ground, an aircraft pitot-static pressure tube, its pitot and static pressure passageways and inlets, and the air pressure-sensitive flight instruments attached to the pitot-static pressure tube. The system includes a hollow adapter assembly into which the tip of the pitot-static pressure tube is inserted. When the tip is as far as it can go into the hollow adapter system, the pitot and static pressure inlets of the pitot-static tube are automatically in communication with their respective corresponding outlets in the hollow adapter assembly, irrespective of the orientation either of the pitot-static tube or of the hollow adapter assembly. This is accomplished with the use of a plurality of hollow spacers, internal of the hollow adapter body, which have flanged ends and form annular chambers that are intermediate of and in communication with the inlets and with the respective outlets.

Abstract: A system for detecting and measuring corrosive reaction of metals in an environment. The system includes: a remotely placeable sensor head containing a galvanic couple made of metals identical to those involved in the corrosion problem, with the couple coiled in the shape of a sprial; and, operatively associated electronic circuitry to amplify, integrate, and store in a non-volatile memory, e.g., a bubble type memory, for future recall the amount of galvanic current that is flowing and that has flowed when corrosion is, or has been, occurring.

Abstract: A temperature sensing assembly which continuously senses the temperature of a constituent stream, of a flow of a gaseous medium; and, as a result of such sensing, generates pneumatic servo-pressure to drive air valves, which control the flow of the constituent stream, to open and shut in accordance with specific requirements.

Abstract: Structural improvement for, and method of, achieving radar cross section augmentation of a conical reentry space vehicle decoy having a dielectric heatshield by structuring the base of the decoy to meet certain conditions. Augmentation is achieved by structuring the decoy to have at the base a reflecting step with a 90 degree angle formed by the internal surface of heatshield and the surface of the base portion of the heatshield, where the dielectric constant of the heatshield is in a range of values predetermined by use of the equation: .epsilon..gtoreq.2(1+tan .alpha.)+tan.sup.2 .alpha., where .epsilon.=the dielectric constant of the heatshield, and .alpha.=the half angle cone of the conical decoy. Any incident radar signal impinging in a nose-on direction upon the external surface of the heatshield enters the heatshield, is completely double reflected within the reflecting step of the heatshield, and is re-directed out of the heatshield and in the opposite direction (i.e.

Abstract: An improvement to a reentry vehicle of the type which does not have a metallic substructure contiguous to the internal surface of the porous, dielectric heatshield thereof, whereby the radar cross section signature in the "nose-on" aspect region of the reentry vehicle can be controlled, individualized, and otherwise modified to confuse and/or to deceive the hostile tracker thereof. The improvement comprises, in essence, of a plurality of zones which are made of electrically conductive material and which are disposed on, and are fixedly positioned partially within (i.e., partially penetrate), the porous dielectric non-ablating internal surface layer of the heatshield by use of vacuum metal diffusion.