Fluid-Structure Interaction Simulation of Parachute in Low Speed Airdrop

Parachute is a kind of high performance decelerators with sophisticated dynamic behaviors, especially for the inflation process, which is a typical fluid-structure interaction (FSI) problem. This article proposes a numerical study on the inflation of ringslot parachute in low speed airdrop. Combing with the CFD/CSD and Arbitrary Lagrangian Euler (ALE) coupling techniques, the FSI numerical model of ringslot parachute was built; utilizing the computational platform of nonlinear finite element code LS-DYNA, the simulation of FSI results of parachute during inflation process was addressed. The visualization of parachute deformation, canopy projected area and inflation forces are obtained. The FSI mechanism of parachute inflation was analysis. The results validated the validity and veracity of ALE coupling method for the simulation of slots-parachute inflation.