An integrated power plant installation system for underwing high-bypass mid-length fan air duct core-mounted engines readily permits disconnection of the entire powerplant at the wing thereby virtually eliminating the necessity of disconnecting the engine and complex systems per se from the support strut when engine replacement or removal proves necessary. Excessive congestion within the vicinity of the strut box structure is eliminated by disposing the engine accessories, and auxiliary equipment and system lines, within the lower quadrant of the powerplant assembly in both a laterally and longitudinally distributed array. Potential catastrophic fire hazards within the nacelle are substantially eliminated by routing the fluid lines and electrical conduits axially aft and upwardly around the circumference of the engine within the nozzle section of the powerplant aft of all rotating discs. These latter features permit the utilization of a simplified strut box structure in that the same need not be provided with equipment clearance structure, conduit throughbores, and complex fire seals and drains. The strut structure is easily tunable with simple plate structure for flutter stiffness control, involving strut and wing bending in gusts. The wing attach/detach engine mounting system, particularly for a core-mounted engine by means of the simplified strut box structure, also facilitates the elimination of the conventional fan D, or split, duct system and enables the employment of a continuous hoop structure thrust reverser system.

Integrated power plant installation system

A ballon limiter in a textile machine with wetting means to supply a liquid for treatment of a ballooning thread in its limited path therethrough, the wetting means including a holder fastened over flow openings in the balloon limiter wall, a casing mounted in the holder and containing at least one insert of absorbent material which is impregnated with the treatment liquid and which is provided with projections extending through the flow openings in the balloon limiter wall for direct contact with the ballooning thread, and clamping means to releasably fasten the casing in the holder over the flow openings.

Balloon limiter with wetting means in a textile machine

Balloon restrainer for two-for-one twisting machine

Improved closure means for the threading slot of a balloon restrainer device in a textile yarn processing machine, such as a twister or the like, which includes a spindle assembly for carrying a package of yarn to be withdrawn and processed and which produces a rotating balloon of the yarn around the package as it is withdrawn therefrom. The improved closure means comprise resilient means secured to the outside surface of the balloon restrainer and spanning the threading slot for resiliently closing the threading slot from the outside thereof during yarn processing operations for allowing the formation of a cushioning column of air within the threading slot from the inside of the balloon restrainer for preventing the escape of rotating air produced by the rotating balloon of yarn through the threading slot and thereby eliminating undesirable noise and which allows the opening of the slot during yarn threading for movement of the yarn therethrough.

Closure means for threading slot of balloon restrainer device for textile yarn processing machine

Apparatus for processing yarn

Structural unit for a two-for-one twisting machine

Baueinheit fuer eine Doppeldrahtzwirnmaschine

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Structural unit for a two-for-one twisting machine

Baueinheit fuer eine Doppeldrahtzwirnmaschine