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Research and Development on Aircraft Certification DX(Flyability)

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23ECMP50

Subject Category: Competitive Funding

PDF available here

  • Responsible Representative: Atsushi Hashimoto, Aircraft DX Team, Aviation Technology Directorate
  • Contact Information: Takashi Ishida, Aircraft DX Team, Aviation Technology Directorate(ishida.takashi@jaxa.jp)
  • Members: Atsushi Hashimoto, Kenji Hayashi, Yuki Ide, Takashi Ishida, Seigo Koga, David Lusher, Tomoaki Matsuzaki, Kazuyuki Nakakita, Yoimi Kojima, Andrea Sansica, Hiroya Toriida, Takahiro Yamamoto, Markus Zauner

Abstract

This project corresponds to a joint proposal by domestic heavy industry manufacturers and JAXA for “Key and Advanced Technology R&D through Cross Community Collaboration Program / Innovation of aircraft design, certification, production processes and process integration” (hereinafter referred to K Program), which NEDO solicited publicly. The K Program is required to implement four major items from FY2023 to FY2027, one of which is Certification DX for this project.

In order to promote an efficient certification process while ensuring safety, Certification DX will demonstrate highly practical CbA (Certification by Analysis) in cooperation with aircraft manufacturers, certification authority, and international WGs, and establish CbA guidelines. The objective is to integrate the design, certification, and production processes on a digital platform using a system model based on MBSE (Model Based Systems Engineering). Specific activities planned include the establishment of CbA guidelines for structure, flight, and lightning, CbA mock reviews, and the application of MBSE to the CP (Certification Plan).

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

In this project, CbA for trim and static stability in longitudinal, lateral and directional directions will be demonstrated through comparison with flight test data, and guidelines for flight CbA will also be developed. JSS is planned to be used for the analysis necessary for these purposes.

In developing guidelines for flight CbA, JSS use is necessary in the following perspectives:

(i)It is necessary to parametrically combine multiple control surfaces and perform a huge number of simulations to compare with flight test data,

(ii)RANS simulation using FaSTAR also requires a large computational cost due to the need to capture turbulent phenomena in detail,

(iii)Grid refinement for takeoff configuration, V&V for RANS simulations, and unsteady flow simulations increases the number of grid points and requires large computational resources,

(iv)Internal resources must be used to maintain the confidentiality of the geometry data.

Achievements of the Year

To demonstrate CbA for trim and static stability in longitudinal, lateral and directional directions, a large number of parametric combinations of flight conditions and control surfaces were simulated to build an aerodynamic database. The assessment of grid convergence was also conducted as part of the V&V.

Publications

N/A

Usage of JSS

Computational Information

  • Process Parallelization Methods: MPI
  • Thread Parallelization Methods: N/A
  • Number of Processes: 480
  • Elapsed Time per Case: 60 Hour(s)

JSS3 Resources Used

 

Fraction of Usage in Total Resources*1(%): 0.97

 

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 42622288.47 1.92
TOKI-ST 66176.95 0.07
TOKI-GP 0.00 0.00
TOKI-XM 0.00 0.00
TOKI-LM 3762.20 0.29
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 2617.49 2.17
/data and /data2 314038.97 1.94
/ssd 3561.20 0.34

 

Archiver Resources
Archiver Name Storage Used
(TiB)
Fraction of Usage*2(%)
J-SPACE 69.08 0.25

*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)
152.86 0.07

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

JAXA Supercomputer System Annual Report February 2023-January 2024