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PV POWER SYSTEM CONFIGURATION AND APPLICATION 783<br />

Figure 17.31<br />

The weather satellite Meteosat, developed by the European Space Agency ESA<br />

A further development of the Pathfinder is the Helios Prototype (Figure 17.33).<br />

The craft has a wingspan of 80 m, 2 1 times that of the solar-powered Pathfinder’s flying<br />

2<br />

wing, and longer than the Boeing 747 jetliner. Helios, which is relatively cheap to run and<br />

is harmless to the environment, is being developed mainly for commercial uses. Since the<br />

plane will be able to observe the Earth from a high-level altitude and will also function<br />

as a relay station for radio communications, its potential applications include weather<br />

observation as well as a collection of information in case of volcano eruptions and/or<br />

earthquakes.

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