Figure 8.34 shows a set of pressure characteristic curves of several different
gases. The calculated results are based on the state equation of real gas, that is, Van
der Waals equation. It can be seen from the figure that a gas filling curve in the
temperature range of À40 $ þ 60
C from 12:5 to 18 MPa can be achieved by using
Equation of real gas
Equation of ideal gas
Fig. 8.33 Comparisons of pressure characteristics between ideal gas state equation and real gas
van’s equation
Air
Fig. 8.34 Comparisons of pressure characteristic curves of several different gases
8.3 Aircraft Hydraulic Accumulator and Cylinder …
45
gases. The calculated results are based on the state equation of real gas, that is, Van
der Waals equation. It can be seen from the figure that a gas filling curve in the
temperature range of À40 $ þ 60
C from 12:5 to 18 MPa can be achieved by using
Equation of real gas
Equation of ideal gas
Fig. 8.33 Comparisons of pressure characteristics between ideal gas state equation and real gas
van’s equation
Air
Fig. 8.34 Comparisons of pressure characteristic curves of several different gases
8.3 Aircraft Hydraulic Accumulator and Cylinder …
45