Experimental investigation of the effect of Reynolds number on flow structures in the wake of a circular parachute canopy

Jin, Zheyan; Pasqualini, Sylvio; Qin, Bo

doi:10.1007/s10409-014-0058-1

Cited by 5 publications

(3 citation statements)

References 21 publications

(26 reference statements)

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“…In the present study, the parachutes were tested in a low-speed wind tunnel having similar specifications as the wind tunnel used in the study of Jin et al at Tongji University [10,12] (Table 1). The experimental setup of parachute testing is presented in Fig.…”

Section: Methodsmentioning

confidence: 99%

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Experimental Characterization of Drag Coefficient of an UAV Recovery Parachute

2021

JST: SSAD

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Parachute recovery systems are proved to be an efficient method to recovery and rescue unmanned aerial vehicles (UAV) as it follows most requirements of reliability and airworthiness in flights. Parachutes are key components of the recovery systems and the drag coefficient of parachutes plays a crucial role in evaluating parachute’s performance. The purpose of the research is to determine and compare the impact of some factors on aerodynamic drag force during the inflation of a parachute. The canopy’s shape (flat circular type and extended skirt 10% flat type), of the length of suspension lines (be in proportion to nominal diameter from 0.6 to 1.5) are considered. Measurement of the drag force of the parachute models is carried out in an open return wind tunnel. Experimental results show that flat circular canopy has a higher drag coefficient than extended skirt 10% flat model in the range of low speed from 3 to 6 m/s. However, when wind speed is greater than 6 m/s, the drag coefficients of both two parachute types are nearly 0.85. In terms of the suspension line, the longer length would significantly raise the coefficient of drag force.

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Section: Methodsmentioning

confidence: 99%

“…The results illustrated that the geometry of parachutes had a considerable impact on the flow structure of the turbulent wake. Meanwhile, the Reynold number was pointed out that it did not affect the profile of velocity, vorticity and Reynolds number [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Characterization of Drag Coefficient of an UAV Recovery Parachute

2021

JST: SSAD

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“…The Parachutes have been widely used with a variety of loads due to their abilities to slow the motion of an object through the atmosphere by creating drag forces [1,2]. To obtain the accurate aerodynamic characteristics of the parachute is very significant for its application, such as decreasing the landing velocities of aircraft and spacecraft [3,4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations on Aerodynamic Characteristics of Parachutes in Mars Probe Decelerator System

Dong¹,

Yang²,

Yu³

et al. 2018

dtcse

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An experimental study is conducted to characterize the aerodynamic performances of two parachutes in the Mars probe decelerator system and the experiments are carried out in the 2.4 m×2.4 m transonic wind tunnel. The lift, drag and pitch moment coefficients versus the angle of attack from 0 to 25 degrees at Mach 0.4 and 0.8 are accurately measured and carefully analyzed. A novel mathematical model is proposed to express the aerodynamic characteristics of the parachutes. The obtained results show that the drag coefficient of the parachutes varies in a small range of 0.525~0.575 at Mach 0.4 and 0.8 as the angle of attack increases from 0 to 25 degrees. The simulated results of the propose model have a well agreement with the wind tunnel experimental data. The investigations in the present paper have a good significant to the engineering development of the parachutes in Mars probe decelerator system.

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