Conceptual Design of Advanced Aviation Systems

JAXA Supercomputer System Annual Report February 2025-January 2026

Report Number: R25EDA201B01

Subject Category: Aeronautical Technology

Responsible Representative: Tetsujiro Ninomiya, Aviation Systems Research Unit, Aviation Technology Directorate
Contact Information: Mitsuhiro Murayama, Aviation Systems Research Unit, Aviation Technology Directorate(murayama.mitsuhiro@jaxa.jp)
Members: Ryutaro Furuya, Yuki Kishi, Mitsuhiro Murayama, Keiji Ueshima

Abstract

The International Civil Aviation Organization (ICAO) has declared a goal for the international aviation sector to achieve carbon neutrality by 2050, marking a significant step towards a decarbonized aviation industry. The requirements for aviation are diversifying and expanding, encompassing responses to natural disasters and enhancements in the convenience of mobility and logistics. In line with these global trends, a number of new aircraft and applications have been proposed that go beyond the boundaries of conventional aircraft. In light of these global trends, this research systematically promotes research and development and improves efficiency by exploring future aircraft concepts and the technologies needed to realize them, conducting system-level performance evaluations of elemental technologies, and facilitating the standardization and sharing of design tools.

Reference URL

Please refer to https://www.aero.jaxa.jp/eng/research/basic/aviationsystems/ .

Reasons and benefits of using JAXA Supercomputer System

To improve the environmental performance of future aircraft, CFD-based design and evaluation have been conducted in this research. The high-fidelity CFD analysis of the whole aircraft configurations requires large computational resources. JSS enables the high-fidelity evaluations of the performance in a timely manner and the technology developments.

Achievements of the Year

Based on specifications from the conceptual design for a 220-seat BWB with hydrogen-electric distributed engines, aerodynamic shape optimization of the wing-body configuratoin was conducted. The optimization aimed to maximize the lift-to-drag ratio (L/D) at cruise while acounting forlongitudinal trim.

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: MPI
Thread Parallelization Methods: N/A
Number of Processes: 2880
Elapsed Time per Case: 10 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.31

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	8144700.80	0.37
TOKI-ST	38925.21	0.04
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	180.03	0.01
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	0.00	0.00
/data and /data2	102400.00	0.67
/ssd	0.00	0.00

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	2.92	0.01

*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)	0.00	0.00

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