Feasibility Design of DIANA, a Dust Analyzer developed for the Tianwen-2 Mission

The research work is focused on the feasibility design of DIANA (Dust In-situ ANalyzer)., a set of micro balances for thermogravimetric analysis developed to be mounted onboard Tianwen2 mission framework and it will investigate the chemical species of Kamo'oalewa 2016HO3 Near-Earth asteroid (NEA) and the environment of 311P/PANSTARRS Main Belt Comet (MBC). The developed instrument is characterized by two sensor heads., i.e. DIANA SH1 and DIANA SH2., equipped with QCMs (Quartz Crystal Microbalances) capable of operating up to high-temperature conditions., i.e. 520 K. The feasibility study required the development of finite element models of the instrument., to assess the robustness of the thermo-mechanical design within the mission requirements environment., as well as the instrument's survival within the expected working conditions., including high-temperature measurements. Furthermore., after the positive assessment of the feasibility design., the calibration of the sensing elements is given being the integration phase of the engineering models has been started and completed., establishing the initial step for the qualification testing under mission-specific environmental conditions.