Fundamental Studies of Methane RCS
JAXA Supercomputer System Annual Report April 2016-March 2017
Report Number: R16E0087
- Responsible Representative: Koichi Okita(Research and Development Directorate, Unit IV)
- Contact Information: Daiki Terakado(terakado.daiki@jaxa.jp)
- Members: Daiki Terakado
- Subject Category: Space(Rocket,Rocket engine,Space transportation,Space engineering)
Abstract
The present RCS of hydrazine used for controling rockets has a weak point on its toxicity. The present project focuses on the non-toxic property of methane and develops safer RCS system for the future rockets.
Goal
The present RCS system of hydrazine has a weak point on its toxicity. The present project focuses on the non-toxic property of methane and develops safer RCS system for the future rockets.
Objective
To apply the methane RCS for the acutal rockets, the improvement of its ignitability is needed. In the present study, the optimal way of the methane injection will be proposed by using CFD analysis.
References and Links
N/A
Use of the Supercomputer
A parametric study by CFD is conducted to investigate how the way of injection affects the ignitability. The effects of the position and number of injector are discussed in detail.
Necessity of the Supercomputer
The present computation needs more than 10 species reactive computation, so that the computational cost is very large. In addition, a massive parametric study will be conduted to find the optimal way of injection. Thus, using supercomputer is necessary.
Achievements of the Year
A test computation of methane RCS was successfully completed (Fig. 1). A parametric study for proposing the optimal way of injection will be conducted next year.
Fig.1:A test computation of methane RCS
Publications
N/A
Computational Information
- Parallelization Methods: Serial
- Process Parallelization Methods: n/a
- Thread Parallelization Methods: n/a
- Number of Processes: 1
- Number of Threads per Process: 1
- Number of Nodes Used: 1
- Elapsed Time per Case (Hours): 24
- Number of Cases: 2
Resources Used
Total Amount of Virtual Cost(Yen): 57,528
Breakdown List by Resources
| System Name | Amount of Core Time(core x hours) | Virtual Cost(Yen) |
|---|---|---|
| SORA-MA | 0.00 | 0 |
| SORA-PP | 0.92 | 7 |
| SORA-LM | 0.00 | 0 |
| SORA-TPP | 0.00 | 0 |
| File System Name | Storage assigned(GiB) | Virtual Cost(Yen) |
|---|---|---|
| /home | 238.42 | 2,249 |
| /data | 4,882.81 | 46,059 |
| /ltmp | 976.56 | 9,211 |
| Archiving System Name | Storage used(TiB) | Virtual Cost(Yen) |
|---|---|---|
| J-SPACE | 0.00 | 0 |
Note: Virtual Cost=amount of cost, using the unit price list of JAXA Facility Utilization program(2016)
JAXA Supercomputer System Annual Report April 2016-March 2017