Abstract: An aircraft nose landing gear installation that utilizes a single piece pin inserted through the gear fittings and into the two piece, fail safe support structure without requiring mechanical retention on the outside of the wheel well.

Abstract: A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized.

Abstract: An EMI terminating and grounding strain release clamp assembly or "backshell" is provided having male and female component members and coupling intermediate members constructed of conductive metals. Upon coupling of the female and male component members a split metallic ring is compressed and envelopes a termination platform with electrical cable shields enclosed in a BeCu wrap-around band. This joint connection produces an electrical grounding path which provides EMI protection. Assembly of the component parts is accomplished without the aid or use of a tool. A sealing member can be used for environmental protection of the backshell interior parts.

Abstract: A pulse width modulated (PWM) controller for high temperature power conversion application is disclosed. The controller includes following functional blocks. A bias generator (10) establishes a stable operating point with Zero- Temperature-Coefficient (ZTC) over operating temperatures and supply voltage variations. An oscillator (13) using the same bias resistor for the bias generator (10), produces a precision time base for the PWM operation. A temperature compensated error amplifier (20) forms a closed loop regulation of a power converter. Three voltage comparators (18,33,37) provide direct coupled current mode control, current limit protection and under voltage lock-out functions. A latch (30) engages the PWM pulses to an output select circuit (21) for user configurable single-ended or double-ended switching topology. An on shot discharge circuit (26) triggered by the under voltage lock-out comparator (37) allows for proper start-up during input voltage transient.

Abstract: An antiskid control system for aircraft braking consisting of an iterative system having inputs including wheel speed, time since touchdown and the value of the control current generated by the previous iteration. Utilizing the previous value and applying fuzzy logic rules, the system modifies itself to adjust for variations in the coefficient of friction between the wheels and the runway.

Abstract: Lightning protection utilizing lightweight electrically conductive coatings with a conductance of approximately 220 to 350 mhos per square co-cured or secondarily bonded to the outer surface of thin skin composite structure. Selection of either 2 to 3 ounces per square yard or aluminum mesh of 1 to 1.5 ounces per square yard, depending on corrosion compatibility, satisfy the conductance requirement and has shown superior lightning protection over heavier weight conductive coatings.

Abstract: An internally temperature controlled heat blanket. The heat blanket includes an outer layer of protecting foam fiberglass that affords operator safety, a layer of closed cell silicone foam which provides thermal and electrical insulation, a layer of thermally conductive mesh, another layer of thermally conductive silicone with holes cut into it, the holes containing positive temperature coefficient (PTC) heating elements, another layer of conductive mesh, a layer of thermally conductive silicone, and an inner layer of moderately conductive cured silicone or foam.

Abstract: A digital bond tester operating at frequencies in the kHz range and relying upon vibrational modes which can excite all or substantial portions of the test object.

Abstract: A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized. A main landing gear having single wheel or king pin steering. Pivot pin tilting is utilized in truck type main landing gear, e.g. where a truck axle is adapted for independent steering or where single wheel or king pin steering is utilized.

Abstract: An electrical rectangular connector having an expanded range on the lower limit of the environment resisting wire sealing webs, a dielectric hard face socket insert to detect splayed or bent pin contacts, a controlled configuration on the contact retention clips which provides easy insertion and removal on the contacts. Additionally, the modular insert construction of the connector allows flexibility to the wiring system, meaning, the connector can have a signal, power, coaxial or twinaxial or combination circuitry and also a bayonet coupling mechanism assembly using dowel pins and dual helical ramp grooves to retrin the connector halves in the coupled condition. Consequently, a visual indicator consisting of an arrowhead opposite a marker labeled "HOME" provides assurance on a fully coupled plug and receptacle connector.

Abstract: A glide slope antenna for receiving information transmitted from the ground, including elevation guidance for the final approach. The glide slope antenna is integrated with the aft nose wheel well door and utilizes the inherent electrical properties associated with the graphite/epoxy composite door.

Abstract: A digital bond tester operating at frequencies in the kHz range and relying upon vibrational modes which can excite all or substantial portions of the test object.

Abstract: An aircraft nose landing gear installation that utilizes a single piece pin inserted through the gear fittings and into the two piece, fail safe support structure without requiring mechanical retention on the outside of the wheel well.

Abstract: A system for removably mounting a thermal insulation blanket to a structure such as a launch vehicle exterior surface, includes a blanket formed of a layer of batting with a substantially rigid frame positioned against one side, and a cover (preferably fabric) surrounding the batting layer. The cover holds the frame in place on the surface of the batting. Preferably, the blanket is quilted. For space launch applications, the batting, cover, and quilting thread are ceramic fiber materials suitable for high temperature use. Fasteners are mounted on the frame and extend outward from the cover. Corresponding mating fasteners are mounted on the structure in an arrangement so as to be positioned to engage with the fasteners extending from the blanket cover. A flat or curved blanket can be provided with a frame material that can be shaped to the desired curve.

Abstract: Normal olfactory function restoration through topical application of an effective amount of fluticasone propionate to the olfactory epithelium. A patient should be started on 1 mg per day dosage and the dosage gradually inreased until the patient regains the sense of smell.

Abstract: An improved MIL-C-26500 type electrical connector having improved environment resisting wire sealing webs, a hard dielectric face socket insert to detect splayed or bent pins, and a controlled configuration of contact retention clips providing improved electrical performance, easy insertion and removal of contacts and improved assembly, serviceability and maintainability. Additionally, the Mil-C-26500 receptacle circular connector having a set of ground wavesprings assembled on the receptacle connector flange to assure a secure ground path on electrically bonded connectors.

Abstract: A handheld atmospheric pressure glow discharge plasma source is provided without the use of an arc. The plasma is induced using a radio frequency signal. An LC resonator in the handheld source with a gain of about 10 at 13.56 MHZ improves the power transfer from a power supply and tuner to the plasma chamber which is capable of producing stable plasmas in Ar, He and O.sub.2 mixtures.

Abstract: A main landing gear system which employs Ackermann type steering utilizing kingpins and tierods wherein a plurality of paired wheels are employed and wherein each truck axle is adapted for independent steering. Electronic control means along with hydraulic directional valve means are utilized. A main landing gear having single wheel or king pin steering. Pivot pin tilting is utilized in truck type main landing gear, e.g. where a truck axle is adapted for independent steering or where single wheel or king pin steering is utilized.

Abstract: A method for producing stable atmospheric pressure glow discharge plasmas using RF excitation and the use of said plasmas for modifying the surface layer of materials. The plasma generated by this process and its surface modification capability depend on the type of gases used and their chemical reactivity. These plasmas can be used for a variety of applications, including etching of organic material from the surface layer of inorganic substrates, as an environmentally benign alternative to industrial cleaning operations which currently employ solvents and degreasers, as a method of stripping paint from surfaces, for the surface modification of composites prior to adhesive bonding operations, for use as a localized etcher of electronic boards and assemblies and in microelectronic fabrication, and for the sterilization of tools used in medical applications.

Abstract: An Aircraft Communication, Addressing, and Reporting System (ACARS) to VHF transceiver interface unit (AVIU) which allows direct pilot control of the VHF mode (voice or data) and also commands the ACARS into the proper mode.