Abstract: A method for testing the breath alcohol (ethanol) content with an embedded PC computer with a touch screen display uses software graphics with icons and graphs displaying an instant representation of the flow rate and breath alcohol concentration of the breath being delivered by the person taking the test. A software graphics using icons and graphs provides control panels by which a test administrator or technician is able to control fundamental operations and adjustments of the instrument. A geared, stepped, multiple optical component placement system having dual plates retains these components, and is capable of precision placement of all components using one electro-mechanical device. An infrared optical filter system operates between 3 and 10 microns. The results are stored in memory and are capable of comparisons to empirical tables for chemical identification.

Abstract: An improved panel mounting assembly for a vehicle antenna mast wherein the assembly is provided with an anchoring arrangement which eliminates the need for stamping a raised stiffening dimple in the panel design surface contour. A mounting assembly mast tubular holding section, which extends vertically through a panel aperture, is provided with a downwardly extending support tube uniquely coupled to and forming a part of the section lower end. The support tube is held in a subjacent body frame member opening by a snap-fitted rubber grommet permitting limited reciprocal travel of the support tube. The arrangement accommodates vehicle build tolerances between the panel and frame during assembly, while stabilizing the antenna structure against fore, aft and lateral movement relative to the panel.

Abstract: A rotary member for restricting the flow of high temperature gas from a first cavity, intermediate rotating and stationary members of a gas turbine engine, and a second cavity, includes a central disc bore segment having an inner circumference and an outer circumferential seal segment. A closed cavity is formed by a portion of the rotating member and a portion of the rotating seal disc, with the inner circumference of the central disc bore segment positioned in a predetermined spaced relation with respect to the rotating member, forming a gap therebetween. The closed cavity contains at least one aperture adjacent the outer circumferential seal segment. A portion of the high temperature gas flows through the aperture into the closed cavity, then exits the closed cavity through the gap formed between the inner circumference of the central disc bore segment and the rotating member. The gap in effect presents a constriction which causes a concomitant increase in the velocity of the gas through the gap.

Abstract: In a gas turbine engine including a compressor having a casing with a passage adapted to pass bleed air to a circumferentially extending bleed manifold surrounding the casing, the passage including a surface exposed to incendiary particles periodically entrained in the bleed air, an improvement is provided comprising means for preventing impingement of the particles upon the exposed surface. In one form the means is disposed between the exposed surface and the bleed air and is comprised of a material which, when reacted with the particles, produces a compound which is essentially nonpyrophoric in the environment of the passage.

Abstract: A protection system for use with a bleed manifold of a gas turbine engine is provided and is comprised of barrier means disposed within the manifold for preventing at least a portion of incendiary particles entrained in a fluid flowing instream through the manifold from impinging upon a wall associated with said manifold. Shielding means are also provided for shielding engine casing bleed ports from impingement by the particles.