Open Access
Kun Song Kim,
Sun Ri,
Sol Song Pak,
Nam Song Pak,
Kum Song Kim,
- Faculty Department of Dynamics, Kim Il Sung University Pyongyang Democratic People’s Republic of Korea
- Faculty Department of Dynamics, Kim Il Sung University Pyongyang Democratic People’s Republic of Korea
- Faculty Department of Dynamics, Kim Il Sung University Pyongyang Democratic People’s Republic of Korea
- Faculty Department of Dynamics, Kim Il Sung University Pyongyang Democratic People’s Republic of Korea
- Faculty Department of Dynamics, Kim Il Sung University Pyongyang Democratic People’s Republic of Korea
Abstract
In general, the parachute test is a long test cycle, expensive, and difficult to measure with accuracy, which makes it a very laborious and time-consuming task. Therefore, attempts have been made to overcome this by using a parachute test stand or by simulation, but in our country, there is no numerical simulation of the parachute and there is no research on it. In this paper, the variation of the shape and flow field of the parachute coating during air filling of the parachute is investigated using a dedicated application. To this end, a model of the parachute was developed using fluid-structure interaction technique on the LS-DYNA program, a transient dynamics finite element code. First, combined computational fluid dynamics model and structural dynamics model were created during the air-filling of the parachute, based on the structure of the parachute and the force characteristics during the air-filling process. In addition, a quantitative measurement of the full-state swirling flow field using the seven-hole probe method was carried out to compare the experimental and calculated results, and the mathematical model used was reliable because the topology of both is very similar and the pressure difference coefficient is not large. Based on this, numerical simulations and analysis of the flow field of the entire air-filling stage were carried out to investigate in detail the changes in the shape of the parachute and the internal and external flow fields of the parachute during the entire opening of the parachute.
Keywords: Ringsail parachute, Orion space vehicle, fluid–structure interaction, offloading, drifting
[This article belongs to Journal of Aerospace Engineering & Technology(joaet)]
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Journal of Aerospace Engineering & Technology
| Volume | 14 |
| Issue | 01 |
| Received | May 12, 2024 |
| Accepted | June 4, 2024 |
| Published | June 10, 2024 |
