Aeroelastic Analysis for Rotocraft

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EDA102C21

Subject Category: Aeronautical Technology

Responsible Representative: Kanako, Yasue, Aviation Technology Directorate, Aircraft Lifecycle Innovation Hub
Contact Information: Hideaki Sugawara(sugawara.hideaki@jaxa.jp)
Members: Keita Kimura, Hideaki Sugawara, Yasutada Tanabe

Abstract

The aeroelastic deformation of helicopter rotor blades affects the vibration and stability of the helicopter. The simulation technology is required to evaluate the aeroelastic deformation in the rotorcraft design. In this work, the research and development of aeroelastic analysis technology for rotorcraft are conducted to validate the prediction accuracy of the analysis tools and aerodynamic design of the blade.

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

Large-scale analysis is required to capture the tip vortices because the flowfield around a rotorcraft is dominated by the tip vortex.

Achievements of the Year

An aeroelastic analysis of helicopter rotor blades is performed using the rotorcraft CFD tool rFlow3D. A validation of implemented aeroelastic analysis method (delta-airoad method) is conducted based on HARTII workshop data. Numerical results show that the aeroelastic deformation agrees with the experimental data, and the numerical method for aeroelasticity was established.

Fig.1: Tip vortices around the model helicopter based on the HARTII WS data.

Publications

– Non peer-reviewed papers

Gunther, W., et. al, “Investigations of a boxed rotor: The STAR II rotor in DLR’s test hall,” European Rotorcraft Forum 2023.

Usage of JSS

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: OpenMP
Number of Processes: 1
Elapsed Time per Case: 336 Hour(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.10

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	0.00	0.00
TOKI-ST	360130.68	0.39
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
TOKI-TST	421997.52	6.92
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	57.29	0.05
/data and /data2	106463.04	0.66
/ssd	586.95	0.06

Archiver Resources
Archiver Name	Storage Used (TiB)	Fraction of Usage*2(%)
J-SPACE	0.00	0.00

*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)	10.17	0.00

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