This means that the pressure ratios of these tunnels are in the order of 10 million.

Thus, for a particular construction technology and set of flight plans an optimal overall pressure ratio can be determined.

Even so, the pressure ratio produced is somewhat higher than that normally developed by a single stage fan.

The pressure ratio of a single fan blade is too low and cannot be used.

Figure 1 indicates how the cycle efficiency changes with an increase in pressure ratio.

This also limits the pressure ratios that can be used in the cycle.

In most common designs, the pressure ratio of a gas turbine ranges from about 11 to 16.

However, there are practical limits when it comes to increasing the pressure ratio.

Using the pressure ratios obtained from the equation above, he was able to form the influence chart.

The overall pressure ratio of the compression system is 24.3.