Study of Rotor-Jetpack-Wind Aerodynamic Interaction for Mid-Air Helicopter Delivery on Mars
2023 IEEE AEROSPACE CONFERENCE(2023)
摘要
Mid-Air Helicopter Delivery (MAHD) is a new Entry, Descent and Landing (EDL) architecture for enabling future Martian helicopter-only missions (e.g., Mars Science Helicopter (MSH)), that offer much greater in situ mobility compared to traditional rover missions at lower cost. This EDL concept utilizes a delivery jetpack to slow down the rotorcraft free fall after separation from the parachuting backshell, thus avoiding unfavorable rotorcraft descent aerodynamics, and provides suitable aerodynamic conditions for helicopter take-off in mid air. While Martian rotorcraft operation has been successfully demonstrated by the Ingenuity system, the mid-air helicopter take-off from a self-propelled jetpack platform has been identified as one of the critical aspects of this EDL strategy. This paper presents the development of an experimental sub-scale test-bench to assess the aerodynamic interactions between the MSH, a jetpack analogue system, and the wind to evaluate the technical feasibility of MAHD. Aerodynamic measurements and various qualitative and quantitative flow visualizations were performed in a (1 atm / 1 g) environment and compared to computational fluid dynamics (CFD) simulation for validation. We also demonstrate in-flight capabilities of wind sensing as well as active trimming of the rotorcraft under relative crosswinds using an integrated force-torque sensor to be placed between rotorcraft and jetpack.
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关键词
aerodynamic interactions,aerodynamic measurements,delivery jetpack,EDL concept,EDL strategy,future Martian helicopter-only,jetpack analogue system,jetpack platform,MAHD,Mars Science Helicopter,Martian rotorcraft operation,mid-Air Helicopter Delivery,Mid-Air Helicopter Delivery,MSH,rotor-jetpack-wind aerodynamic interaction,rotorcraft free fall,suitable aerodynamic conditions,traditional rover missions,unfavorable rotorcraft descent aerodynamics
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