Development of CFD-Base Flight Simulator
JAXA Supercomputer System Annual Report February 2021-January 2022
Report Number: R21EDA201N15
Subject Category: Aeronautical Technology
- Responsible Representative: Takashi Aoyama, Director, Aircraft Lifecycle Innovation Hub, Aviation Technology Directorate
- Contact Information: Atsushi Hashimoto(hashimoto.atsushi@jaxa.jp)
- Members: Atsushi Hashimoto, Kenji Hayashi, Kazuyuki Nakakita, Yoimi Kojima
Abstract
In aircraft certification, fight-test risk-reduction and cost-reduction are issues. CbA (Certification by Analysis), which replaces flight tests with analysis, is being studied globally in order to promote safe and efficient certification. Therefore, we are constructing a CFD-based flight simulator for the purpose of replacing and complementing flight tests.
Reference URL
N/A
Reasons and benefits of using JAXA Supercomputer System
In order to build a CFD-based flight simulator, it is necessary to execute a large number of calculation cases with different Mach numbers, angles of attack, rudder angles, etc., and create an aerodynamic database.
Achievements of the Year
We implimented 175 computational cases for different Mach numbers, angles of attack, and stabilizer angles by using FaSTAR to construct an aerodynamic database. In order to prove that the longitudinal trim can be maintained at the configurations and speeds specified in the airworthiness regulations, a CFD-based flight simulator was constructed and trim analyses were performed. The trimmed angle of attack and stabilizer angle are in good agreement with the test results, indicating that the analysis could replace the flight test.
Publications
N/A
Usage of JSS
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 512
- Elapsed Time per Case: 30 Hour(s)
JSS3 Resources Used
Fraction of Usage in Total Resources*1(%): 0.18
Details
Please refer to System Configuration of JSS3 for the system configuration and major specifications of JSS3.
| System Name | CPU Resources Used(Core x Hours) | Fraction of Usage*2(%) |
|---|---|---|
| TOKI-SORA | 4148596.64 | 0.20 |
| TOKI-ST | 2871.08 | 0.00 |
| TOKI-GP | 0.00 | 0.00 |
| TOKI-XM | 0.00 | 0.00 |
| TOKI-LM | 963.37 | 0.07 |
| TOKI-TST | 0.00 | 0.00 |
| TOKI-TGP | 0.00 | 0.00 |
| TOKI-TLM | 0.00 | 0.00 |
| File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
|---|---|---|
| /home | 1183.84 | 1.18 |
| /data and /data2 | 120282.04 | 1.29 |
| /ssd | 31826.13 | 8.22 |
| Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
|---|---|---|
| J-SPACE | 64.10 | 0.43 |
*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 Used(Hours) | Fraction of Usage*2(%) | |
|---|---|---|
| ISV Software Licenses(Total) | 9.02 | 0.01 |
*2: Fraction of Usage：Percentage of usage relative to each resource used in one year.
JAXA Supercomputer System Annual Report February 2021-January 2022