Journal of Astronautics ›› 2015, Vol. 36 ›› Issue (7): 784-790.doi: 10.3873/j.issn.1000-1328.2015.07.006

Previous Articles     Next Articles

Thermal Characteristics Analysis of a Near Space Aerostat Driven by the Natural Energy

WU Yao, YAO Wei, WANG Chao, LV Xiao chen, MA Rong   

  1. Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, China
  • Received:2014-06-25 Revised:2014-09-23 Online:2015-07-15 Published:2015-07-25

Abstract:

In order to solve the issues such as “super-heat”, “super-pressure” and “wind resistance” that near-space aerostats are faced with during station keeping, the novel near-space aerostat investigated in this paper makes use of natural heat and wind energy, and transforms the disadvantages into advantages. The novel aerostat uses the simple technical method to control altitude and trajectory, thus it meets the requirements of long duration and regional station keeping. The thermal equilibrium model of this novel aerostat is established to analyze the superheating, and further the system parameters are analyzed in this paper. The results suggest that both solar absorptivity and emissivity of the envelope have significant influence on its superheating and the reasonable choice of the thermal control coating can meet the requirements of system design.

Key words: Near space, Aerostat, Thermal analysis, System parameters

CLC Number: