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Table 11 Example of massif regulation in the case of a thermal excursion in gas temperature ± 10°between day and night

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

Hydrogen

T [K]

V [m3]

ΔV [m3]

ΔM gas [kg]

206.65

2368397

−114609

1446

216.65

2483006

0

0

226.65

2597616

114610

−1318

Helium

T [K]

V [m3]

ΔV [m3]

ΔM gas [kg]

206.65

2579995

−124849

2865

216.65

2704844

0

0

226.65

2829692

124848

−3142