Fig.1

Schematic diagram of thermal environment for stratospheric airships during floating

Fig.2

Schematic diagram of envelope discretization

Fig.3

Overall configuration and test conditions of test airships［57］

Fig.4

The grid of discretization for test airships

Fig.5

Comparison of computational results and test on test airship thermal characteristics

Fig.6

Schematic diagram of differential pressure load

Fig.7

Schematic diagram of floating initial state analysis

Fig.8

Finite element model of envelope structure

Table 1

Parameters of envelope material mechanical property

Fig.9

Variation curve of elastic modulus of envelop material with temperature［47］

Fig.10

Schematic diagram of experimental airbag configurations

Fig.11

Comparison of simulation results and test on airbag

Table 2

Comparison of computational results and literature on airbag characteristic points displacement

Fig.12

Flow chart of thermal-structure coupling calculation

Fig.13

Schematic diagram of solar array layout configuration

Table 3

Thermophysical parameters of materials

Table 4

Flight condition parameters during floating

Fig.14

Schematic diagram of envelope cross section radial displacement

Fig.15

Contour of radial displacements distributions in floating initial state

Fig.16

Characteristic curves of envelope wrinkle analysis in floating initial state

Fig.17

Radial displacements of envelope characteristic curves with axial coordinate in floating initial state

Fig.18

Envelope surface temperature distributions at representative time during day and night at float conditions

Fig.19

Schematic diagram of temperature characteristic elements during day and night at float conditions

Fig.20

Variation curves of characteristic elements temperatures at vertical symmetry plane with time

Fig.21

Variation curves of characteristic elements temperatures in maximum diameter cross section with time

Fig.22

Envelope radial displacements distributions at representative time during day and night at float conditions

Fig.23

Schematic diagram of deformation characteristic curves during day and night at float conditions

Fig.24

Variation of characteristic curves shapes in horizontal plane with time

Fig.25

Variation of radial displacements of characteristic curve 1 with time

Fig.26

Variation of shapes of characteristic curve 5 with time

Fig.27

Variation of radial displacements of characteristic curve 5 with time

Fig.28

Variation of shapes of curve 6 and 6-2 with time

Fig.29

Variation of radial displacements of characteristic curve 6 with time

Fig.30

Variation of shapes of characteristic curve 7 with time

Fig.31

Variation of shapes of characteristic curve 8 with time

Fig.32

Variation of shapes of characteristic curve 9 with time

Fig.33

Variation of radial displacements of characteristic curve 7 with time

Fig.34

Variation of radial displacements of characteristic curve 8 with time

Fig.35

Variation of radial displacements of characteristic curve 9 with time

Fig.36

Variation of radial displacements of characteristic curve 2 with time

Fig.37

Variation of radial displacements of characteristic curve 3 with time

Fig.38

Variation of radial displacements of characteristic curve 4 with time

Fig.39

Schematic diagram of stress characteristic elements during day and night at float conditions

Fig.40

Variation of characteristic elements stress on characteristic curve 5 with time

Fig.41

Variation of characteristic elements stresses on characteristic curve 6 with time

Fig. 42

Variation of characteristic elements stresses on characteristic curve 6-2 with time

Fig.43

Variation of characteristic elements stresses on curve 7 with time

Fig.44

Variation of characteristic elements stress on characteristic curve 8 with time

Fig.45

Variation of characteristic elements stress on characteristic curve 9 with time