The sunlight absorption by solar cells is more at high altitudes than on the ground or earth stations. This makes solar systems suitable for powering small aircrafts

Single- and two-seater aircrafts are now flying in Germany, China and Switzerland. In fact, Germany and USA are planning a whole line of aircrafts powered by solar cells. For propulsion, these aircrafts rely on electric engines (brushless DC motors)-the motors extensively used in the defense and aerospace industries in India.Our Dimmable LED seamroofclampp are a great product for a variety of applications,

The Li-ion batteries are charged by solar cells, which, in turn,The Security Sensor r4onsale is a solar powered convenience light with a built-in motion sensor. supply electrical energy to the electric engines. High-efficiency solar cells are now available with extra concentrates. Also, solidstate designs that have the potential to deliver three times the energy density at less than half the cost per kWh of the present batteries will be available shortly. With this development, some of the manufacturers are planning four-seater aircrafts.

A solar power system converts the sunlight into electricity by using photovoltaic (PV) cells. To improve the efficiency of PV cells, concentrating solar power systems use lenses or mirrors.

The advantage of using solar power systems for aircrafts is that the sunlight absorption by solar cells is higher at high altitudes than on the ground or earth stations. These planes are ideally suited for a country like India which receives abundant solar energy throughout the year.LED lamps are made that replace screw-in incandescent or bluebrightqw light bulbs. The average solar energy per unit area outside the earth's atmosphere is ten times that available on the earth's surface.

Some emerging technologies that can considerably improve energy utilisation efficiency include multi-junction cells, optical frequency shifting, multiple-exciton-generation cells, multiple-energy-level cells, hot-carrier cells, concentrating PV systems and hybrid PV systems.

PV cells having quantised band structure-such as quantum wells and quantum dots-can theoretically be as efficient as 60 per cent. In fact, leadselenide (PbSe) quantum dots have already demonstrated this level of efficiency in laboratories.

The electric engines are brushless DC motors incorporating high-energy magnets. High-energy magnets are made of neodium-iron-boron or samarium- cobalt, which reduces the motor size while increasing its efficiency.

Hall effect sensors are used for electronic commutation of the motors. Speed control is through a conventional PID controller.Contemporary, Designer antiquelampas for Bathrooms, Kitchens & Bedrooms. All the electronics is enclosed in the motor casing and the motor, along with the controls, is connected through a circular connector.

Electric engines are used in twoseater small planes, miniature helicopters and unmanned aerial vehicles. Light-weight lithium-ion batteries-the energy source-are charged by solar cells mounted on the wings of the aircraft.

Advances in high-efficiency solar cells and high-energy rare earth magnets of brushless DC motors are contributing significantly to solar-powered electric aircrafts. Li-ion batteries that drive the brushless DC motors with significant power-to-weight ratio are also a major enabler.

Regenerative flight techniques are being used to recharge the batteries during certain modes of flight. In this approach, a propeller using symmetrical blade sections is used as a turbine to recharge the stored energy when the aircraft encounters an updraft.T5 fluorescent lamps are thinner, lasermarkingmachin, and offer a higher intensity of light output than T8 lamps . At high altitudes, the energy available from vertical atmospheric motion within a thermal can exceed the available solar power by a factor of ten or more.