Abstract
Stratospheric light aerostat flies relying on the air buoyancy, and has more advantages than other air vehicles. The diurnal temperature difference of the stratospheric light aerostat is important to the long-endurance regional station-keeping performance. In the present paper, a thermal model is proposed, which include the thermal model of the envelope, internal gas, computational model, and adjustment of the diurnal temperature difference. A comparison with related results in the literature is carried out to verify the model. The stratospheric light aerostat temperature distribution and helium velocity field are simulated. The effects of the envelope radiation properties including emissivity, the absorptivity and the ratio of absorptivity to emissivity on the stratospheric light aerostat thermal performance are discussed. The results show that the envelope radiation properties have great influence on stratospheric light aerostat thermal performance and decreasing the ratio of absorptivity to emissivity of envelope can be a good way to improve thermal performance. The results are conducive to select envelope radiation parameters of the stratospheric aerostat.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
