STM Journals Peer-reviewed research from Consortium e-Learning Network

International Journal of Machine Systems and Manufacturing Technology Review Article

Study on the Method of Calculation of the Additional Mass of Parachute

  1. Hyo Il Pak Department of Mechanics
  2. Chol Guk Mun Department of Mechanics
  3. Sol Song Pak Department of Mechanics

Abstract

As is well known, the air drag experienced by a parachute when it is open is one of the important parameters that must be taken into account in studying the parachute opening process. If this term is not calculated correctly, it can have a negative effect on the parachute canopy, and may lead to errors in the number of parachute strings, the nominal diameter of the parachute, and the material selection, and eventually to parachute failure. Generally, there are several hydrodynamic methods in this calculation, including modeling the recovery system dynamic equations based on the drag characteristics in the calculation of canopy forces and calculating the load change during parachute opening. Thus, it can be seen that the accurate determination of the added mass is crucial for the calculation of the forces that the canopy experiences during parachute opening. In the past, the added mass was based on the assumption of an ideally expanded canopy shape using the added mass coefficient method, but no research on the added mass coefficient method has been developed so far. To this end, this paper formulates the concept of the additional mass of the parachute and develops the UAV-parachute system equations of motion. Also, through numerical calculations, two engineering calculations of the added mass are presented : the internal mass method and the expansion radius method. Considering both methods, it was concluded that the dilatation radius method is better for calculating the radial and axial additional mass of the parachute.

Keywords

References (33)

  1. Yu Li, Shi Xianlin, Ming Xiao. Numerical simulation of parachute during opening process [J].
  2. Acta Aer onautica et Astro naut ica Sinica, 2007, 28(1): 52–57.
  3. Purvis J W. Theoretical analysis of parachute inflation including fluid kinetics [R]. AIAA
  4. 81–1925, 1981.
  5. Stein K R, Benney R J, Steeves E C. A computational model that couples aerodynamic structural
  6. dynamic behavior of parachutes during the opening process[R]. NASA-ADA 264115, 1993.
  7. Stein K R, Benney R J. Parachute inflation: a problemin aeroelasticity [R]. NASA-ADA284375,
  8. Tutt B A, Tay lo r A P. The use o f LS-DYNA to simulate the inflat ion of a parachute canopy [R].
  9. AIAA 2005–1608, 2005.
  10. Tutt B A, Taylor A P, Jean C B, et al. The use of LS -DYNA to assess the performance of airborne
  11. system North America candidate ATPSmain parachutes [R]. AIAA 2005–1609, 2005.
  12. Peskin C S. 3-D parachute simulation by the immersed boundary method[J] . Computers and
  13. Fluids, 2009, 38: 1080–1090.
  14. Takizaw a K, T ezduyar T E. Computa tio nal methods for par achute fluid structure interactions
  15. [J]. Arch Comput Methods Eng, 2012, 19: 125–169.
  16. T akizaw a K. Fluid structure interaction modeling of spacecraft parachutes for simulation based
  17. design [ J]. Journal of Applied Mechanics, 2012, 79: 1–9.
  18. Jia He, Rong Wei, Cheng Guoliang. The simulation of parachute inflation process based on LS-
  19. DYNA software [J]. Spacecr aft Environment Engineering , 2010, 27( 3) : 367–373. 293
  20. Numerical Study of Parachute Dropping Based on Moving Meshes Method, The society of Fiber
  21. Science and Technology, 2016
  22. Automated Image Measurement of Parachute Projection Area under Inflation Process, Internation
  23. workshop on Information and electronics Engineering, 2012
  24. The Study of Parachute Inflation Course based on Fluid- Structure Interaction Method, Chinese
  25. Journal of Aeronutics, 2014
  26. H. Cheng, Y, N, Zhan, X, Yang, L, Yu, and X, Chen, Ind, Textila, 65, 324, 2014
  27. Cheng H, Yu L, Yin ZW. A new method of complicated folded fabric modeling. J Harbin Inst
  28. Technol 2012;19(2):43–7
  29. Karagiozis K, Kamakoti R, Cirak F, Pantano C. A computational study of supersonic disk-gap-
  30. band parachutes using Large-Eddy simulation coupled to a structural membrane. J Fluids Struct
  31. 2011;27(2):175–92.
  32. Kenji T. Fluid structure interaction modeling of spacecraft parachutes for 19 simulation-based
  33. design. J Appl Mech 2012;79(1):1–9.