Cooperative Research on Landing Gear in the FQUROH Project
JAXA Supercomputer System Annual Report April 2017-March 2018
Report Number: R17EA2820
Subject Category: Aeronautical Technology
- Responsible Representative: Kazuomi Yamamoto, FQUROH Project Team, Aeronautical Technology Directorate
- Contact Information: Kazuomi Yamamoto yamamoto.kazuomi@jaxa.jp
- Members: Akihisa Shimada, Kazuomi Yamamoto, Yasushi Ito, Mitsuhiro Murayama, Ryotaro Sakai
Abstract
This collaborative research is being carried out as part of the FQUROH project aimed at raising the technical maturity level of the noise reduction technology for landing gear, which draws international attention to reduce noise in areas around airports, to a level applicable to future development of aircraft and related equipment. This contributes to reduction of aircraft noise in local communities around the airport and airline operating costs by reducing landing fee.
Reference URL
Reasons for using JSS2
The JSS2 enabled low-noise devices to be designed based on Reynolds-averaged Navier-Stokes simulations, thermo-fluid coupling simulations and more advanced computational simulations, such as large eddy simulations, using Siemens STAR-CCM+. Computational simulations using the JSS2 made it possible to design low-noise devices by understanding detailed physical phenomena, which was difficult only with wind tunnel tests and tests with an actual aircraft.
Achievements of the Year
Computational simulations of brake cooling was conducted for baseline and low-noise configurations of the main landing gear of JAXA’s jet research aircraft, “Hisho,” under a condition similar to that during the temperature measurement in Noto Airport, Ishikawa, Japan during the second flight demonstration on airframe noise reduction technologies. No significant influence was observed in time required for brake cooling with the low-noise configuration, which had a porous plate mounted between the tires and the wheels had no holes.
Publications
■ Non peer-reviewed papers
1) Yamamoto, K., Takaishi, T., Murayama, M., Yokokawa, Y., Ito, Y., Arizono, H., Sakai, R., Shoji, H., Ueno, Y., Isotani, K., Lee, H.-H., Inoue, T. and Kumada, T., “FQUROH: A Flight Demonstration Project for Airframe Noise Reduction Technology – the 1st Flight Demonstration,” AIAA Paper 2017-4029, 23rd AIAA/CEAS Aeroacoustics Conference, Denver, CO, 2017, DOI: 10.2514/6.2017-4029.
2) Takaishi, T., Inoue, T., Lee, H.-H., Murayama, M., Yokokawa, Y., Ito, Y., Kumada, T. and Yamamoto, K., “Noise Reduction Design for Landing Gear toward FQUROH Flight Demonstration,” AIAA Paper 2017-4033, 23rd AIAA/CEAS Aeroacoustics Conference, Denver, CO, 2017, DOI: 10.2514/6.2017-4033.
Usage of JSS2
Computational Information
- Process Parallelization Methods: MPI
- Thread Parallelization Methods: N/A
- Number of Processes: 120
- Elapsed Time per Case: 12.00 hours
Resources Used
Fraction of Usage in Total Resources*1(%): 0.08
Details
Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.
System Name | Amount of Core Time(core x hours) | Fraction of Usage*2(%) |
---|---|---|
SORA-MA | 0.00 | 0.00 |
SORA-PP | 79,527.35 | 1.00 |
SORA-LM | 0.00 | 0.00 |
SORA-TPP | 0.00 | 0.00 |
File System Name | Storage Assigned(GiB) | Fraction of Usage*2(%) |
---|---|---|
/home | 057.07 | 0.04 |
/data | 6,836.68 | 0.13 |
/ltmp | 6,583.16 | 0.50 |
Archiver Name | Storage Used(TiB) | Fraction of Usage*2(%) |
---|---|---|
J-SPACE | 89.59 | 3.85 |
*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.
JAXA Supercomputer System Annual Report April 2017-March 2018