the world’s first Aircraft jet engine-embedded electric machine with high power density and heat resistant
～For optimizing the energy management of aircraft system to reduce CO2 emission～
March 30, 2020
IHI Corporation leads
More Electric Architecture for Aircraft and Propulsion (hereinafter referred to as “MEAAP”)
that aims at the optimization of the total energy management of aircraft system with technological innovation toward CO2 emission reduction from aviation.
As one of the key technology to realize the MEAAP system,
IHI developed an electric machine (250kW)
that can be mounted inside the tail cone located in the aircraft jet engine rear-end in cooperation with domestic companies, and successfully completed the evaluation testing in this February.
This development
was conducted as one of Research and Development Project for Advanced Aircraft Systems toward Practical Application supported by NEDO (Director: Hiroaki Ishizuka).
Developed Technology
In order to reduce a mechanical loss and aerodynamic loss due to the gear train connecting the engine main shaft and generator,
changing the generator installation method has been studied.
IHI focused on the electric generator directly mounted to the engine main shaft, and determined the location as the engine rear-end, because engine tail cone space is the best location considering the operability and maintenance ability.
However, the environmental conditions such as engine vibration, shock and temperature from exhaust gas path are harsh for electrical components and its thermal and structural design is unfeasible without innovative and unique technology.
IHI developed the cutting-edge technology which enables the high power density and heat resistant generator, including pre-shaped and weld-jointed windings with 300 deg. C high heat-resistant insulation coating.
Additionally, new cooling technology based on IHI’s expertise and experiences on the thermal, aerodynamic and structural technology for the jet engines was incorporated.
By combining these technology,
IHI developed the electric machine that can be directly mounted to the engine shaft at the engine rear-end.
The power generation testing was conducted at IHI Yokohama facility and we achieved 250kW rated power generation in February.
Aero Engine, Space and Defense｜2019FY｜IHI Corporation
https://www.ihi.co.jp/en/all_news/2019/aeroengine_space_defense/2020-3-30/index.html