Forward flight performance of multirotor

JAXA Supercomputer System Annual Report April 2019-March 2020

Report Number: R19ETET07

Subject Category: Skills Acquisition System

PDF available here

Responsible Representative: Yuto Sayama, Undergraduate student, Tokyo University of Agriculture and Techonology
Contact Information: Yuto Sayama(y-sayama@st.go.tuat.ac.jp)
Members: Yasutada Tanabe, Yuto Sayama, Kaito Hayami, Hideaki Sugawara

Abstract

Study of forward flight performance of multicopter

Reference URL

N/A

Reasons and benefits of using JAXA Supercomputer System

In order to perform a rotorcraft analysis tool.

Achievements of the Year

Numerical analyses are performed on a multicopter propeller using a rotorcraft CFD tool to investigate the effect of blade twist on forward flight performance. Results obtained by numerical analyses shows that the equivalent lift-to-drag ratio increases as a blade twist decreases at a high advancing ratio condition (Fig. 1)., As a result, it is suggested that the blade twist must be determined to balance a hovering performance with a forward flight performance.

Fig.1: The relation between the advance ratio and the equivalent lift-to-drag ratio. The untwisted blade get higher equivalent lift-to-drag ratio.

Publications

N/A

Usage of JSS2

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: OpenMP
Number of Processes: 1
Elapsed Time per Case: 10 Hour(s)

Resources Used

Fraction of Usage in Total Resources*1(%): 0.06

Details

Please refer to System Configuration of JSS2 for the system configuration and major specifications of JSS2.

Computational Resources
System Name	Amount of Core Time (core x hours)	Fraction of Usage*2(%)
SORA-MA	0.00	0.00
SORA-PP	78,729.71	0.51
SORA-LM	0.00	0.00
SORA-TPP	47,170.29	2.85

File System Resources
File System Name	Storage Assigned (GiB)	Fraction of Usage*2(%)
/home	759.47	0.63
/data	17,311.80	0.30
/ltmp	3,284.80	0.28

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.