Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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An Experimental Study of Reefing Effect on Decelerating Parachutes

감속 낙하산 Reefing 효과에 관한 실험적 연구

  • Published : 2002.04.30
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Abstract

The effect of reefing-line length and reefing methods on drag and inflated shape of the conical ribbon parachute were experimentally investigated. Tests were performed to determine reefing-line length of the parachute models, demonstrate aerodynamic adequacy of the reefing method, and confirmed that performance met the design requirement. The reefing ratio, drag-area ratio, was decreased in relation to the decrease in the length of the reefing-line and the stability of the parachute models was increased with reefing. The test results were compared with the avilable similar data. Fair to good agreement was obtained.

Reefing-line 길이와 reefing 방식이 리본형 낙하산의 항력과 팽창형상에 미치는 영향에 관한 실험적 연구를 수행하였다. 시험은 모델 낙하산 reefing-line 길이의 확정과 reefing 형상의 적절성 및 설계적합성 확인을 위해 수행되었다. 항력면적의 비율인 reefing ratio는 reefing-line의 길이 감소에 따라 감소하였으며, reefing을 통해 모형 낙하산의 안정성이 증가되었다. 시험결과들을 기존의 유사시험결과들과 비교하였으며, 시험결과들은 기존 연구결과들과 잘 부합되었다.

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References

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