Verification and Validation of the Spring Model Parachute Air Delivery System in Subsonic Flow

Li, Xin

doi:10.21236/ada623612

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…Nevertheless, the use of the simple MSD model proposed here should be limited to the early phase of canopy inflation. A more accurate model considering the complete strain-stress behavior of the fabric would be required for an extended range of application, see for example [13,35,37].…”

Section: Msd Solvermentioning

confidence: 99%

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Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics

Ortega

Flores

2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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A technique for the aeroelastic solution of parachute decelerators is presented in this work. The methodology uses empirical aerodynamics, based on a filling-time inflation model and Ludtke's area law, coupled to two explicit structural solution approaches. A mass-spring-damper technique allows solving the deployment of the system (when the grid is highly distorted) efficiently, and a finite element model is used for the accurate calculation of the structural loads and stresses during parachute opening and steady flight. The coupling strategy is staggered and the models share the same mesh. The methodology is intended for practical calculations of deceleration systems, and provides useful performance and structural data minimizing model complexity and computational cost. The suitability of the proposed technique is assessed by comparisons with reference test drop data.

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Section: Msd Solvermentioning

confidence: 99%

“…A more accurate model considering the complete strain-stress behavior of the fabric would be required for an extended range of application. 13,35,37…”

Section: Msd Solvermentioning

confidence: 99%

Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics

Ortega

Flores

2019

Proceedings of the Institution of Mechanical Engineers, Part G:

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Development and Validation of a Nonlinear Fabric Model for Subsonic Parachute Aerodynamics

Anton,

Rapisarda,

Ross

et al. 2023

Journal of Spacecraft and Rockets

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Parachute/flow interaction is dominant in evaluating a decelerator’s performance. Such interaction is characterized by nonlinear deformations and complex flow phenomena. While testing methods are available to investigate parachute performance, these are often costly and nonrepresentative of the desired flight conditions. To address the need for an accessible technique capable of modeling parachutes at the early design stages, this paper proposes a robust fluid/structure interaction methodology for three-dimensional subsonic simulations. This is attained by replacing the linear springs in Provot’s equation with polynomial expressions whose coefficients are fitted to tensile test data. The nonlinear cloth algorithm is coupled with the rhoPorousSimpleFoam solver in the open-source OpenFOAM toolbox, thereby establishing an iterative process that reaches steady-state convergence in at most six iterations. The transient response is obtained from the average distributed load of the steady-state pressure field and an inertial damping contribution. The simulations are performed for two disk-gap-band parachutes and a ringsail parachute over a velocity range of ring sail 5–30 m/s. The results are compared to the experimental data measured in the Open Jet Facility of Delft University of Technology, yielding errors below 5% for the steady-state cases and overestimations in peak loads of 4.4–12.4% for the transient simulations.

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Verification and Validation of the Spring Model Parachute Air Delivery System in Subsonic Flow

Cited by 2 publications

References 31 publications

Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics

Aeroelastic analysis of parachute deceleration systems with empirical aerodynamics

Development and Validation of a Nonlinear Fabric Model for Subsonic Parachute Aerodynamics

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