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The introduction of solar impulse has been perceived as a major leap in the transport industry. This is mainly because if it does succeed, people will be able to fly planes which are not powered by fuel and are instead powered by the sun. It will be possible for people to fly for long periods of time to collect scientific data that is entirely dependent on the season in the year and the position of the sun. The Helios powered engines have been made with technical specifications that highlight some of its best and strongest features even though they are still undergoing a number of tests to prove if they can be safe and efficient to use.

The entire length of the plane is 3, 6 meters and is 2meters in height excluding the propellers upper blades.It has a wing width thickness measuring 0.3 m with a span of 75,3meters and a Wing area of 186.6 m2. An unloaded solar plane has 600kilogrammes of mass however, depending on the energy available and purpose of the flight the plane may be allowed a maximum mass of 930kgs.On the other hand, the cargo can weigh not more than 330kgs.

The solar planes have a basic speed of between thirty and forty KM/h that is considered to be a comfortable and safe speed but the speed can increase up to 270km/hr. The solar plane has a maximum height of flight which is 30000metres and a typical height of between 15000 and 22000 m but again this height is dependant on the flight mission. It has 14DC electric motors which are brushless with two blades, each motor has 1′5KW power and has a weight of five kilogram’s and less.

The propeller blades are 1,7m each .These features are designed specially to facilitate flights which are of high altitude. The energy comes from bifacial solar cells of 1.25″ x 2.75″ dimensions with a backside 11 % and Front side 22 % efficiencies located on the transparent wings. In the dark lithium batteries are used to power the solar plane but there is a plan in future to use fuel cells as a major source of energy in darkness. The planes are expected to be able to fly in future for several months uninterrupted using the fuel cells. The materials used to make the solar planes are not complex, the wings are covered by plastic sheets that are specially produced and designed, while the major parts of the plane are made from Styrofoam and carbon fibers.

There is no doubt that the solar planes can be a dream come true for pilots, scientists, travelers and even researchers since it is cost friendly and it promises perfection in the aerodynamics, the structure fabrication and the energy but critics question the energy mode of take off as there is still no mention of it being powered by solar energy. The other issue is that solar planes may not be able to accommodate as many people at one time.