Aerodynamic characteristics of supersonic mid-gore reefing disk-gap-band parachute under different reefing ratios

The increasing the mass of Mars landing probes requires enlarging the parachute area to ensure stable deceleration performance while controlling the parachute opening force to avoid excessive structural weight penalties on the probe. One of the effective ways to meet the above needs is the reefing disk-gap-band parachute. In this article, the functional link between the reefing ratio and the resistance coefficient ratio, projection area ratio, and reefing rope load is obtained using fluid-structure coupling simulation analysis based on the Mars environment. The stability characteristics of the reefing disk-gap-band parachute were studied by computational fluid dynamics simulation. The research of this paper shows that the disk-gap-band parachute can achieve the controlled change of resistance performance, and can provide stable performance to meet the engineering application.