Weijie XU, Yi LI
DOI Number: XXX-YYY-ZZZ
Conference number: HiSST2024-00188
Parachute, due to its low mass and high aerodynamic drag, is an important deceleration device in the fields of Earth’s atmospheric re-entry deceleration, planetary entry, and deep space exploration. Supersonic parachutes, represented by disk-gap-band (DGB) parachutes, have gradually reached their maximum system mass and deployment velocity limits. To address this issue, researchers have designed a reefing system on the DGB parachute just like on the subsonic parachute, to reduce the inflation load to get a higher system mass and entry velocity. This paper establishes a reefed DGB parachute model based on the parachute of Mars Science Laboratory mission, and studies the aerodynamic and aerothermal characteristics of the supersonic reefed parachutes. This paper uses fluid-structure-interaction (FSI) technology to study the canopy inflation processes of reefed and disreefed parachute, and clarifies the aerodynamic characteristics such as drag and stability. Several typical states during the inflation process include initial state, mid-inflation state and canopy stable state are selected to establish corresponding parachute system models by computer-aided-design (CAD). The aerothermal characteristics of canopy macroscopic and microscopic structures are studied. Finally, the reefing design method suitable for the supersonic DGB parachute is obtained. All the works are to support deep space exploration such as Mars exploration.