摘要:
The invention relates to a turbomachine comprising an air compression stage (2) comprising at least one moving compressor wheel (20), an air intake pipe (4) coupled to said air compression stage (2), a first sealing device (54) positioned between a front portion (56) of the moving compressor wheel (20) and the air intake pipe (4) comprising at least one pressure seal (60), a channel (45) for conveying air compressed by the moving wheel (20) and a second sealing device (64) positioned between a rear portion (66) of the moving compressor wheel (20) and the conveyance channel (45) and configured to receive an air flow (F2) coming from the conveyance channel (45), the turbomachine being remarkable in that the second sealing device (64) is configured to allow a withdrawal (F3) of part of the air passing through it and in that the withdrawn air (F3) is conveyed to the pressure seal (60) of the first sealing device (54) so as to keep it pressurized.
摘要:
A method (60) for protecting a fan blade with an airfoil, a tip, a root and a sheath, the root to be inserted into a hub, includes peening the airfoil of the blade (62); inserting a scrim cloth between the fan blade and the sheath to galvanically isolate the fan blade from the sheath; bonding the sheath to the blade with an epoxy adhesive (64); peening the blade root (66); bonding wear pads to the root with epoxy adhesive to galvanically isolate the root from the hub; applying a protective cover to the tip of the blade (70); and applying a coating to all exposed areas of the blade to inhibit corrosion (72,74).
摘要:
An airfoil of a turbine engine includes pressure and suction sides and extends in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between a leading edge angle and span position that defines a curve with a leading edge angle of less than 40° at 100% span.
摘要:
A compressor airfoil of a turbine engine having a geared architecture includes pressure and suction sides that extend in a radial direction from a 0% span position to a 100% span position. The airfoil has a relationship between a camber angle and span position that defines a curve with a decreasing camber angle from 80% span to 100% span.
摘要:
A gas turbine engine (121) comprises a main compressor section having a high pressure compressor (141) with a downstream most end (140), and more upstream locations (126). A turbine section has a high pressure turbine (144). A first tap taps air from at least one of the more upstream locations (126) in the main compressor section, passes the tapped air through a heat exchanger (122) and then to a cooling compressor (124). The cooling compressor (124) compresses air downstream of the heat exchanger (122). A second tap taps air from a location closer to the downstream most end (140) than the location(s) (126) of the first tap. The first and second tap mix together and are delivered into the high pressure turbine (144). An intercooling system for a gas turbine engine (121) is also disclosed.
摘要:
A power generating apparatus for use with an aircraft gas turbine engine (10) has a low pressure spool assembly (12) which includes an electrical generator (34). The electrical generator (34) includes a generator stator (48) supported on a stationary structure of the engine and a generator rotor (58) rotatable around the generator stator (48) and mounted to the low pressure spool assembly (12).