Abstract:
In order to quickly and effectively remove the bacterial plaque inside manned spacecraft such as space stations, a scheme is proposed for designing the plague removing device. The principle structure, the simulation of payload strength, the analysis of processing parameters, as well as the optimization approaches are presented. The preliminary results of the ground experiments show that the collection rate and the sterilization rate of the prototype can reach 91% and 99.5%, respectively, under the optimal process conditions(wind speed: 20
m/s, UV LED power: 5
W, irradiation time: 10
min), which meet the usage requirements. The rapid dyeing experiments show that the prototype’s spot removal rate and the sterilization rate of the corrosive strains of
Aspergillus,
Aspergillus niger and
Penicillium are better than 90%. In the practical application, the removal rate of the fungal plaque on the light board of the sealed compartment reaches 99%. The device is expected to enhance the ability of manned spacecraft to prevent and control microbial contamination & corrosion in orbit.