Parametric Study on Aerodynamic Interaction of Supersonic Parachute System

Xue, Xiao; Nishiyama, Yusuke; Nakamura, Yu; Mori, Koichi; Wen, Chih-Yung

doi:10.2514/1.j053824

Cited by 17 publications

(5 citation statements)

References 14 publications

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“…For the boundary conditions, because the rear body (canopy) is regarded as a rigid wall without fabric permeability in this study, the body surface is set as an adiabatic wall with no-slip, the freestream values are set as the far field conditions, and the outlet flow field parameters are obtained by center extrapolation of the computational domain. In addition, the laminar flow model was used in previous studies [17,[23][24][25], where the simulation results were in good agreement with that from the wind tunnel tests, and the laminar model is still used for the present numerical simulations. Supersonic wind tunnel test data of SSDS parachutes is lacking, and the flight tests also failed.…”

Section: Methodsmentioning

confidence: 86%

“…The previous studies show that different trailing distance ratios (X/d) and the capsule/canopy diameter ratios (d/D) cause different flow modes of the two-body system [1,23]. With the increasing of trailing distance ratio, the flow modes would go through pulsation mode, oscillation mode, and wake/shock interaction mode [1,23]. In this study, the flow mode is wake/shock interaction mode for the given X/d and d/D.…”

Section: Resultsmentioning

confidence: 99%

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Numerical Study on Aerodynamic Performance of Mars Parachute Models with Geometric Porosities

Jiang

et al. 2022

Space Sci Technol

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The supersonic flows around rigid parachute-like two-body configurations are numerically simulated at Mach number of 1.978 by solving three-dimensional compressible Navier-Stokes equations, where the two-body model consists of a capsule and a canopy, and a geometric structure (i.e., gap) is located on the canopy surface. The objective of this study is to investigate the effects of gaps with different porosities and positions on the aerodynamic performance of supersonic parachute. The complicated periodic aerodynamic interactions between the capsule wake and canopy shock occur around these two-body models. From the formation of canopy shock and drag coefficient variation, the cycled flow structures can be divided into three types:(1) narrow wake period, (2) open wake period, and (3) middle wake period. In addition, it was found that the geometric gaps have no obvious influences on the flow modes. However, compared with models with different gap positions, the two-body model with an upper gap (gap is close to the canopy vent, UG model) has a smaller drag coefficient fluctuation and better lateral stability. On the other side, the increase of porosity has a more significant impact on UG models.

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Section: Methodsmentioning

confidence: 86%

Section: Resultsmentioning

confidence: 99%

Numerical Study on Aerodynamic Performance of Mars Parachute Models with Geometric Porosities

Jiang

et al. 2022

Space Sci Technol

View full text Add to dashboard Cite

show abstract

“…However, their conditions were limited to very low speed (0.6-1.2 m∕s). Xue and Nakamura [9] and Xue et al [10,11] conducted a series of studies on supersonic parachutes. In Refs.…”

mentioning

confidence: 99%

“…In Refs. [10,11], they assumed the parachute canopy was rigid (i.e., no deformation was considered) and focused on its surrounding supersonic flow physics, such as shock interactions and oscillations: Particular attention was paid to the separation between the forebody and the canopy in Ref. [10], whereas the effects of the (rigid-body-modeled) suspension lines were discussed in Ref.…”

mentioning

confidence: 99%