TY - JOUR
AU - Li, Yanjun
AB - The vent collapse of parachute canopy known as “wake recontact” reduces the parachute-deceleration performance and even leads mission to fail. To investigate the critical conditions where wake recontact occurs, the deceleration process of ring slot parachutes with various effective canopy permeabilities, mass ratios and Froude numbers were simulated based on Arbitrary Lagrange Euler coupling method. The drag coefficient and projected diameter of canopy are consistent with the flight test, the numerical method can well simulate the parachute-deceleration process. On this basis, the wake recontact phenomenon is discussed and the influence of fabric permeability on canopy shape, drag coefficient, and the flow structure are analyzed. The results reveal that the wake recontact occurs because downstream air accelerates while the canopy decelerates, which is caused by momentum transfer between the parachute system and downstream air. The canopy collapse leads to the asymmetric change of velocity contour. As the canopy permeability increases, the momentum transfer between canopy and flow decreased, the deformation of canopy is much smaller and the wake recontact phenomenon even disappears for high permeability canopy. The parachute-collapse parameter is obtained based on the simulated results and drop test data, and the critical conditions under which the wake recontact occurs are obtained.
TI - Influence of Fabric Permeability on Wake Recontact Phenomenon of Parachute
JF - International Journal of Aeronautical and Space Sciences
DO - 10.1007/s42405-024-00845-y
DA - 2025-04-01
UR - https://www.deepdyve.com/lp/springer-journals/influence-of-fabric-permeability-on-wake-recontact-phenomenon-of-AhG6rw5LVR
SP - 1234
EP - 1245
VL - 26
IS - 3
DP - DeepDyve
ER -