Ihi Corporation

Nozomi Tanaka

Tsutomu Oishi

Shinya Kusuda

Yoshinori Oba

Kaoru Inoue

Daisuke Sato

Ryuuta Tanaka

Dai Kato

Junya Kouwa

Takayuki Hazu

Haruki Hosaka

Norio Asaumi

An axial compressor includes: a casing having a tubular shape; variable stator vanes each having a vane shaft as a swing center, provided in the casing as stator vanes or inlet guide vanes, and arranged in a circumferential direction of the casing; rotor blades provided on a trailing edges side of the variable stator vanes in the casing and arranged in the circumferential direction of the casing; and a plasma actuator configured to generate a plasma annularly distributed in the circumferential direction of the casing, the plasma actuator being attached on an inner circumferential surface of the casing and intersects with a clearance between each variable stator vane and the inner circumferential surface of the casing.

Axial compressor

Disclosed is a method of manufacturing an airfoil structure. The airfoil structure includes a plurality of airfoils, a support for supporting the airfoils, and a case for covering the airfoils. Each airfoil includes an airfoil body, and an airflow generator for producing induced airflow by generating plasma. The method includes a process of forming the airflow generator that includes a first electrode forming step of forming a first electrode on the airfoil body, a dielectric layer forming step of forming a dielectric layer on the airfoil body by forming ceramic powder into a film to cover the first electrode through room temperature impact consolidation, and a second electrode forming step of forming a second electrode on a surface of the dielectric layer, such that the second electrode is electrically connected to the first electrode, and an alternating-current voltage is applied to the second electrode.

Airfoil structure manufacturing method

A noise reduction system includes: a microjet ring () provided at an exhaust side peripheral edge of a main nozzle of a jet engine, and has a plurality of injection pipes () formed in a circumferential direction thereof at regular intervals; and a supply path configured to take part of compressed air in from a flow path in an upstream side of a combustor in the jet engine, and to guide the part of compressed air to the plurality of injection pipes (), wherein the plurality of injection pipes () is configured to inject the part of compressed air to a jet flow.

Noise reduction system

The present invention relates to a jet engine including protrusions () for preventing the increase of the velocity gradient of a fluid in a mixed layer of a jet flow and an external air flow by bending the mixed layer, when viewed from the side of a jet flow injected.

Jet flow nozzle and jet engine

A noise reduction system with a chamber includes a chamber () which is provided at a portion of a supply path connecting a flow path in an upstream side of a combustor in a jet engine to a plurality of microjet nozzles which is provided at an exhaust side peripheral edge of a main nozzle of the jet engine, wherein the supply path is configured to supply part of compressed air from the flow path into the chamber (), and the chamber () is configured to inject the compressed air through the plurality of the microjet nozzles () to a jet flow.

Growing community of inventors

Tokyo, Japan

Nozomi Tanaka