CALLISTO Guidance and Control Analysis

JAXA Supercomputer System Annual Report February 2023-January 2024

Report Number: R23EBG10102

Subject Category: Research and Development

Responsible Representative: Shinji Ishimoto, Project Manager, Research and Development Directorate, CALLISTO Project Team
Contact Information: Taro Tsukamoto(tsukamoto.taro@jaxa.jp)
Members: Taro Tsukamoto

Abstract

CALLISTO is conducting research aimed at reusing the first stage of a rocket as one way to effectively reduce the cost of transportation to space. Guidance and control technology is one of the important technologies in the series of operations from launch to landing and reuse, and the performance of the guidance and control system is evaluated through Monte Carlo simulation using a detailed mathematical model that takes into account various uncertainties. Such simulations require a high calculation load, and speeding up through parallel calculations is extremely effective.

Reference URL

Please refer to https://www.kenkai.jaxa.jp/eng/research/callisto/callisto.html .

Reasons and benefits of using JAXA Supercomputer System

By using JSS’s virtual desktop environment to perform Monte Carlo simulations using Matlab/Simulink, the de facto standard for guidance and control simulations, on a supercomputer, it is possible to quickly perform realistic evaluations that simulate complex systems.

Achievements of the Year

Monte Carlo simulation using Matlab/Simulink, which is the de facto standard for guidance and control simulation, is carried out on a supercomputer using JSS’s virtual desktop environment to evaluate the guidance and control algorithm using a detailed model that includes vehicle characteristics and environmental conditions. We have confirmed that it was effective and are using it for analysis and evaluation in the detailed design phase.

Fig.1: CALLISTO Vehicle and Flight Profile

Fig.2: Example of Monte Carlo simulation result

Publications

N/A

Usage of JSS

Computational Information

Process Parallelization Methods: N/A
Thread Parallelization Methods: Matlab/Simulink Parallel Computing Toolbox
Number of Processes: 1
Elapsed Time per Case: 1 Minute(s)

JSS3 Resources Used

Fraction of Usage in Total Resources*1(%): 0.01

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	73536.60	0.08
TOKI-GP	0.00	0.00
TOKI-XM	0.00	0.00
TOKI-LM	0.00	0.00
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	245.00	0.20
/data and /data2	0.00	0.00
/ssd	0.00	0.00

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)	0.00	0.00

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