本文へ移動

サイトナビゲーションへ移動

検索ボックスへ移動

サイドバーへ移動

ここは、本文エリアの先頭です。

Research and Development of Emission Free Aircraft Technologies

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EDA102H01

Subject Category: Aeronautical Technology

PDF available here

  • Responsible Representative: Akira Nishizawa, Aeronautical Technology Directorate
  • Contact Information: Yuzuru Yokokawa(yokokawa.yuzuru@jaxa.jp)
  • Members: Masaya Funada, Atsushi Hashimoto, Hiroshi Kobayashi, Taisuke Nambu, Takayuki Sakurai, Keisuke Sugaya, Yoshiharu Tamaki, Hirotaka Tsutsui, Keiji Ueshima, Kanako Yasue, Yuzuru Yokokawa

Abstract

With the ultimate goal of achieving emission-free (zero emissions) aircraft, research and development of electric hybrid propulsion system is conducted, which includes the WAT(Wake Adaptive Thruster) fans at the end of fuselage, and new configuration of electric aircraft that apply them, as well as system demonstration project.

Reference URL

Please refer to https://www.aero.jaxa.jp/eng/research/frontier/feather/ .

Reasons and benefits of using JAXA Supercomputer System

The JSS3 is used to design a passenger aircraft equipped with an turbo-electric hybrid propulsion system. Because a huge computational resource is required to handle both thermodynamics and aerodynamics, JSS3 is essential for the execution of this research and development.

Achievements of the Year

This year, three analyses were conducted. One of them is the multi objective optimization of the aerodynamic shape of the electric hybrid aircraft with WAT fans. FaSTAR-Move with the actuator disk was used as the solver to find low drag shape of the WAT fan nacelle. In addition, we conducted an analysis to define a model shape which is used in the transonic wind tunnel test to be conducted in the next fiscal year using UTCart, a solver owned by the University of Tokyo. (Fig. 1) The third is an analysis to study the SACOC (Surface Air Cooled Oil Cooler) fins for electric motors and their demonstration systems. FaSTAR was also used as a solver to simulate a demonstration in the high-altitude environment test facility. (Fig. 2)

Annual Reoprt Figures for 2023

Fig.1: Simulation of an electric hybrid aircraft model equipped with a WAT fan in transonic wind tunnel.

 

Annual Reoprt Figures for 2023

Fig.2: Simulation of the SACOC fin in high altitude test facility.

 

Publications

N/A

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: OpenMP
  • Number of Processes: 36 – 768
  • Elapsed Time per Case: 12 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.50

 

Details

Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.

Computational Resources
System Name CPU Resources Used
(Core x Hours)
Fraction of Usage*2(%)
TOKI-SORA 13231661.42 0.60
TOKI-ST 2106.81 0.00
TOKI-GP 0.00 0.00
TOKI-XM 293.89 0.16
TOKI-LM 8433.27 0.64
TOKI-TST 0.00 0.00
TOKI-TGP 0.00 0.00
TOKI-TLM 0.00 0.00

 

File System Resources
File System Name Storage Assigned
(GiB)
Fraction of Usage*2(%)
/home 1157.87 0.96
/data and /data2 152805.83 0.94
/ssd 32420.21 3.06

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 19.06 0.07

*1: Fraction of Usage in Total Resources: Weighted average of three resource types (Computing, File System, and Archiver).

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

 

ISV Software Licenses Used

ISV Software Licenses Resources
ISV Software Licenses Used
(Hours)
Fraction of Usage*2(%)
ISV Software Licenses
(Total)
973.51 0.44

*2: Fraction of Usage:Percentage of usage relative to each resource used in one year.

JAXA Supercomputer System Annual Report February 2023-January 2024