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Table 1 Atmospheric data

From: Long permanence high altitude airships: the opportunity of hydrogen

Altitude

Temperature

Pressure

Density

Pressure H2

[m]

[K]

[Pa]

[kg/m3]

[Pa]

0.00

288.15

101325.00

1.2250

106391.25

1000.00

281.65

89874.57

1.1116

94368.30

2000.00

275.15

79495.22

1.0065

83469.98

3000.00

268.65

70108.54

0.9091

73613.97

4000.00

262.15

61640.24

0.8191

64722.25

5000.00

255.65

54019.91

0.7361

56720.91

6000.00

249.15

47181.03

0.6597

49540.08

7000.00

242.65

41060.74

0.5895

43113.78

8000.00

236.15

35599.81

0.5252

37379.80

9000.00

229.65

30742.46

0.4663

32279.58

10000.00

223.15

26436.27

0.4127

27758.08

11000.00

216.65

22632.06

0.3639

23763.67

12000.00

216.65

19330.41

0.3108

20296.93

13000.00

216.65

16510.41

0.2655

17335.93

14000.00

216.65

14101.80

0.2268

14806.89

15000.00

216.65

12044.57

0.1937

12646.80

16000.00

216.65

10287.46

0.1654

10801.83

17000.00

216.65

8786.68

0.1413

9226.02

  1. Bold indicates the valuesat optimal altitude