Refine by:

Date

Subjects

Availability

Content type

Clear Filters

Search Results

Results:1 - 10 of 72 for

Sort by:
  • In US, the Light Eagle human-powered aircraft has now been fitted with thin-film amorphous-silicon solar cells, a 12 ft diameter propeller, an electric motor, and batteries for night flying. The 114 ft span Sunlight Eagle represents a step towards an ultra-long-endurance surveillance platform.

    • Availability: Online
    • Record type: Abstract

  • In US, the solar cells for Helios were produced by SunPower in California with a conversion efficiency of some 30% greater than that of conventional silicon cells by using back contacts to permit more light absorption. SunPower has now developed a production process that reduces the costs significan...

    • Availability: Online
    • Record type: Abstract

  • In Scandinavia, the Dutch Nuon Solar winner of the 2003 Solar Challenge, Nuna 2, is being tested against the northern European weather. The car is energised by 9 square metres of a three-layer triple junction gallium arsenide solar cell array, permitting conversion of nearly a quarter of the sun¹s r...

    • Availability: Online
    • Record type: Abstract

  • In Switzerland, the Solar Impulse aircraft has completed a 26 hour flight powered by 12 000 solar cells and 880 lb of batteries at a maximum height of over 28 000 ft, at an average speed of 23 kt, and maximum ground speed of 68 kt. An improved prototype to fly across the Atlantic is under constructi...

    • Availability: Online
    • Record type: Abstract

  • In US, LightSail operated by the Planetary Society has launched its craft incorporating a 32 square metre solar sail.   After some initial problems, the sail has indicated that it has deployed successfully.   The craft will shortly return to Earth, but will be replaced next year.

    • Availability: Online
    • Record type: Abstract

  • Q-Cells, the worlds largest manufacturer of solar cells, cut its 2008 earnings forecasts yesterday, giving warning that a global recession was sapping demand for renewable energy. Anton Milner, the chief executive of the German group, said that it had been hit by a flood of cancellations and dela...

  • In US, the unmanned NASA/AeroVironment solar-powered Helios aircraft completed its first flight of 18 hours duration at 22 800 m altitude with a top speed of 200 mi/h (320 km/h). An altitude of 30 000 m is planned, representing a record for a propeller-driven aircraft. The 14 propellers are driven b...

    • Availability: Online
    • Record type: Abstract

    • Availability: In the library
    • Record type: Book

  • The use of solar electric systems is one of the best ways to get power to remote locations, whether in developed or underveloped areas. This practical guide describes planning and installation of solar electric systems and covers solar energy, components of solar electric systems, installation, serv...

    • Availability: In the library
    • Record type: Book

    • Availability: In the library
    • Record type: Book

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. Next