摘要:
The present disclosure is directed to a system (100) and method for repairing an abradable material (70) coated on a casing of a gas turbine engine (10). The system (100) includes an articulating guide (102) configured to fit into an access port (62) of the gas turbine engine (10). Further, the articulating guide (102) has a proximal end (106) and a distal end (108). The system (100) also includes a repair tool (104) configured at a distal end (108) of the articulating guide (102). The repair tool (104) includes a body (110) having a proximal end (112) and a shaped distal end (114), with the shaped distal end (114) extending away from the body (110). Thus, the shaped distal body (114) is configured to trench out an area of the abradable material (70) comprising a defect (72). The system (100) also includes a filler material (120) for filling the trenched out area (125).
摘要:
One aspect of the disclosure involves a nib material comprising a polymeric matrix and carbon nanotubes in the matrix. In one or more embodiments of any of the foregoing embodiments, the matrix comprises a silicone. In one or more embodiments of any of the foregoing embodiments, the rub material is at least 1.0 mm thick. In one or more embodiments of any of the foregoing embodiments, the silicone is selected from the group consisting of dimethyl- and fluoro-silicone rubbers and their copolymers. In one or more embodiments of any of the foregoing embodiments, the carbon nanotubes at least locally have a concentration of 1-20% by weight.
摘要:
A turbine shroud (46) for a gas turbine engine includes an annular metallic carrier (48), a blade track (50), and a cross-key connection formed between the annular metallic carrier (48) and the ceramic blade track (50). The cross-key connection is formed between the annular metallic carrier (48) and inserts (53) included in the blade track (48). A corresponding turbine blade track (50) comprsing an annular ceramic runner (51) and inserts (53).
摘要:
A fuel manifold (100) for distributing fuel to a gas turbine engine includes a plurality of interconnected manifold segments (104). Each manifold segment extends between a pair of fuel injector inlet fittings (6). Each manifold segment includes a fuel liner (112) defining an internal fuel passage (114) therethrough fluidly connecting a pair of fuel injector inlet fittings. A wire braid layer (116) surrounds the fuel liner, a fire sleeve (120) surrounds the wire braid layer, and a flexible thermal shield (122) surrounds the fire sleeve. An insulation space (124) is defined between the fire sleeve and the thermal shield to thermally isolate the fire sleeve from conditions external to the thermal shield.
摘要:
A seal for use with a static guide vane of a gas turbine engine has a strap member extending to a generally cylindrical bulb. The bulb forms a diameter, and is spaced a distance defined between an end of the strap remote from the bulb, to a point on the bulb furthest from the end. A ratio of the diameter to the distance is between 0.2 and 0.5. A static guide vane and a gas turbine engine are also disclosed.
摘要:
L'invention consiste en un nouveau type de générateur de poussée à propergol solide. Ce générateur de poussée comporte, dans une version bipulses, un corps de propulseur (61) terminé par une tuyère (63), à l'intérieur duquel sont coulés successivement deux chargements coaxiaux de propergol solide (66, 67), séparés par une cloison souple (64, 65), pelable, constituée par un matériau inhibiteur de combustion. La cloison souple, configurée pour épouser la forme de la surface de contact des deux chargements, est collé sur la surface du premier chargement coulé. Le générateur de poussée comporte également deux allumeurs (68, 69) agencés de telle façon que la mise à feu du premier allumeur (68) entraine la combustion totale du premier chargement (66), la combustion étant interrompue par la présence de la cloison souple (64, 65), tandis que la mise à feu du second allumeur (69) entraine le pelage et la déchirure de la cloison souple et la combustion du second chargement (67). Cette structure de générateur de poussée bipulses peut être transposée à la réalisation de générateurs multipulses.
摘要:
The invention comprises an abradable material containing up to 30 weight percent of fumed silica having a maximum particle from about 5 nanometers to about 20 nanometers and about 1.5 to about 5 weight percent of an abradable organic microballoon filler within an abradable silicone polymer matrix having an elasticity of less than 300 percent.
摘要:
The invention comprises an abradable material containing up to 30 weight percent of fumed silica having a maximum particle from about 5 nanometers to about 20 nanometers and about 1.5 to about 5 weight percent of an abradable organic microballoon filler within an abradable silicone polymer matrix having an elasticity of less than 300 percent.
摘要:
A fan blade assembly for a gas turbine engine (10) includes a blade body (48), a blade cover (56) secured to the blade body and an adhesive layer (58) to secure the blade cover to the blade body, the adhesive layer configured to set at ambient temperature. A method of forming a fan blade assembly for a gas turbine engine includes forming a blade body, forming a blade cover separate from the blade body, and adhering the blade cover to the blade body via an adhesive layer located between the blade body and the blade cover, the adhesive layer configured to set at ambient temperature.