摘要:
A propulsion device contains a working mass within an enclosed plenum, where the working mass is circulated through the plenum to produce a net force vector. The working mass is accelerated around a first bend or change in direction within the plenum by a working mass driver. The temperature of the working mass is then reduced and the working mass is slowed. The working mass is then accelerated around a second bend or change in direction within the plenum resulting in two opposing force vectors. When combined, the two opposing force vectors produce a net force, and thus, acceleration of the propulsion device.
摘要:
Turbines and associated equipment are normally cleaned via water or chemical pressure washing via a mist, spray systems. However, these systems fail to reach deep across the gas path to remove fouling materials. Various embodiments herein pertain to apparatus and methods that utilize the water and existing chemicals to generate a foam. The foam can be introduced at that gas-path entrance of the equipment, where it contacts the stages and internal surfaces, to contact, scrub, carry, and remove fouling away from equipment to restore performance.
摘要:
A ring seal apparatus for high temperature sealing includes a first ring including a pair of radial faces and a second ring including a second pair of radial faces, the second ring adapted to coact with the first ring. The first and second rings together define a pair of coacting mating faces. The mating faces are obliquely angled relative to the radial faces, such that each of the coacting mating faces is adapted to seal an interface of the two rings at an angle relative to their substantially parallel radial faces. The pair of coacting rings is adapted to seal a circumferential gap between a pair of components.
摘要:
A seal damper system includes a plurality of circumferentially spaced blades that each include a platform and an airfoil that extends radially outwardly from the platform. A pocket is arranged circumferentially intermediate the blades and radially inwardly of the platform. A seal damper is arranged in the pocket. The seal damper includes a base section that extends along an axial dimension from a first axial end to an opposing second axial end. The base section joins a first arm that extends radially inwardly from the first axial end and a second arm that extends radially inwardly from the second axial end. The first arm includes a free end having a pair of spaced apart shoulders.
摘要:
A vane assembly for use in a gas flow duct. The vane assembly includes multiple vanes arranged circumferentially about the duct. A throat angle of each of the vanes at mid-span is greater than the throat angel at the tips of the vane.
摘要:
A device for use with a gas turbine engine having an augmentor downstream includes a variable area mixing plane upstream of the turbine exhaust case for receiving core stream flow and fan stream flow. A swirl vane induces swirl in the fan stream flow and directs that stream flow to a mixing cavity to mix with the core stream and flow to the turbine exhaust case. A splitter proximate the swirl inducing vane diverts fan stream flow to an exhaust line to cool the fan case during operation of the augmentor.
摘要:
A turbine exhaust case has an outer housing to be secured within a gas turbine engine and a central hub. Struts extend between the outer housing and the central hub. The struts are formed at least in part of a first material. The central hub is formed at least in part of a second material.
摘要:
Bei diesem energieoptimierten Verfahren zum Antrieb von Wasser-,Land-, oder Luftfahrzeugen wird ein Fluid aus der Umgebung stetig angesaugt und mit verändertem Impuls gegen die Fahrtrichtung stetig abgegeben. Der Eingangsimpuls wird stets aus dem nach hinten offenen Halbraum des umströmten Antriebs angesaugt, so dass die eingehenden Stromfäden des angesaugten Fluids eine nichtlineare Beschleunigung und Richtungskonzentration erfahren. Das Strahltriebwerk zum Betrieb des Verfahrens arbeitet mit einem Impulsbilanzraum, dem ein oder mehrere Impulsströme zufliessen und aus dem ein oder mehrere Impulsströme abfliessen, wobei das Fluid zwischen Zufluss und Abfluss im Inneren der Maschine durch einen Arbeitsmaschine gefördert wird, beispielsweise durch eine Pumpe oder einen Propeller oder einen Verdichter. Die als Reaktion entstehende Impulskraft wirkt in Fahrtrichtung und treibt das Fahrzeug an.
摘要:
A gas turbine engine includes a fan section. A turbine section is coupled to the fan section via a geared architecture. The geared architecture includes a torque frame and a flex support spaced apart from one another at a location. A gear train is supported by the torque frame. A damper is provided between the torque frame and the flex support at the location.
摘要:
A replaceable thrust generating structure for an air vehicle, which includes one or more mounts, which are attachable to the air vehicle, and a thrust generating structure attached to each of the one or more mounts, and wherein the thrust generating structure includes an NMSET element.