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As in all areas of mobility, relief structures is a major concern of engineers in aeronautics, to minimize energy consumption. The planes are lighter, however, more sensitive to disturbance, and therefore require further work focus to ensure aerodynamic stability and passenger comfort.
Gusting wind disturbance are problematic for aircraft, they can cause the oscillation of the wings and tail, and so abruptly inconveniencing passengers. The phenomenon is even more intense as the aircraft is light. Researchers from the German Aerospace Center (DLR) s’attellent therefore consider these oscillations in terms of aerodynamics.
They have at this end of a transonic wind tunnel with a length of 50 m, Göttingen (Lower Saxony). A large rectangular wing is placed in the airflow, and is oscillated. This causes turbulence, which come to pass on a second wing, smaller, positioned behind the first and also entering into oscillation. This experimental setup therefore allows to study the behavior of the wings in normal flight conditions – both in cruise downhill – and the interactions between the two wings. On the other hand, the greater wing is capable of generating very high turbulence, comparable to the gusts of wind. This will allow researchers to observe the consequences on the small wing, which allow to deduce the constraints would apply to the aircraft.
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German airline Lufthansa will use biofuel on a scheduled flight. This will be the first company worldwide to launch such a trial in real flight conditions.
From April 2011, for a period of six months, an Airbus A321 will make its flights between Frankfurt and Hamburg on board with biofuel [1]. A reactor will be powered by conventional kerosene and the other with a mixture of kerosene and biofuel, as legally part of the latter should not exceed 50%.
Biological kerosene used by Lufthansa is synthesized by a Finnish producer, and its approval is expected in March 2011. Lufthansa insists it is not produced on the basis of plants that could be used for nutritional purposes, contrary to usual practices in the automotive sector (eg ethanol, widely used in Brazil comes from the cane sugar).
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Engineers at the Institute aerohydrodynamique Central ( TsAGI ) have developed a new concept airliner capable of carrying an average number of passengers. This unit would be achieved by pattern aerodynamic of a ” flying wing ” . In this device configuration , passengers are placed in the large central part of the flying wing , says it at TsAGI .
The possibility of applying the scheme the flying wing to aircraft for passengers is studied also by the consortium Airbus and trust Boeing . Initially , the main works were oriented towards the prospect of creating aircraft with very large capacity (between 700 and 1,000 passengers). it was thought Indeed that with smaller dimensions , it would be difficult ” to include ” the lounge for passengers in useful volumes of the flying wing .
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From 14 to 18 June 2010 , held in Paris on biannual international exhibition Eurosatory 2010 [1 ] , devoted to security systems and defense . Spain was present, through a score of companies from showcase their latest technology. The Indra , multinational Information Technology number one in Spain , took the opportunity to present the unmanned helicopter Pelicano . Currently in development , it should be operational in 2012 .
Pelicano measuring only 3.3 meters in diameter and weighs 200 kg. It aims to adapt to the necessities of naval control of shipping, border surveillance and support to relief operations. In both military and civilian purposes , a helicopter of this type ensures dangerous missions without endangering human life. The project is supported by the Ministry of Industry , Trade and Tourism and monitored by the Ministry of Defence .
Pelicano is scheduled to fly 24/24 for extended periods , up to one month ! From a technical standpoint , this small helicopter can reach 3600 meters and has an improved engine from existing models , allowing it to use JP5 fuel [2 ] , safer on board cargo ships because of low volatility , giving a greater flying range , and allowing it to increase its payload transported ( sensors of all kinds) .
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Gusting wind disturbance are problematic for aircraft, they can cause the oscillation of the wings and tail, and so abruptly inconveniencing passengers. The phenomenon is even more intense as the aircraft is light. Researchers from the German Aerospace Center (DLR) s’attellent therefore consider these oscillations in terms of aerodynamics.
From April 2011, for a period of six months, an Airbus A321 will make its flights between Frankfurt and Hamburg on board with biofuel [1]. A reactor will be powered by conventional kerosene and the other with a mixture of kerosene and biofuel, as legally part of the latter should not exceed 50%.