Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Study on the influence of release conditions on the ascending process of high altitude balloons
| DOI: | 10.11809/bqzbgcxb2024.11.022 |
| Keywords: | high altitude balloon; ascent process; thermodynamics; complex thermal environment; flight test |
| Abstract: | In this paper, based on the existing research foundation of high altitude balloon lift off process, a thermal dynamic coupling model of high altitude balloon is established, which mainly includes system force analysis, dynamic modeling, radiation heat transfer and convection heat transfer model.Combined with the actual flight test data, the coupling model is verified.On this basis, the influence of the release date, the latitude of the release point and the initial helium temperature on the parameters such as the balloon speed, the net buoyancy of the system and the helium temperature inside the sphere during the launch of the high altitude balloon are analyzed.The results show that the selection of the appropriate release location and date can alleviate the influence of the supercooling phenomenon during the lift off process to a certain extent, and the initial helium temperature mainly has a certain influence on the early lift off stage.The research results can provide some theoretical guidance for the study of high altitude balloons, and the influence law of different factors has certain engineering practical value. |
| Published: | 2024-11-30 |