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• Modern Procedures for the Improvement of the Energy Efficient and Environmentally Sensitive Operation of Aerial Vehicles

  205-215

  Krisztina Rozovicsné Fehér

  Views:

  89

  The undiminished development of air traffic has a direct effect on the environment of airports. Year in year out the continuously growing passenger traffic has increased the number air flights. The technological development has made it possible to increase the size and performance, - and with it the transportation of heavier payload - of aircraft. Of course, it has necessarily resulted in more fuel use (burnt fuel) emitting more pollutants into the atmosphere. In addition this effect appears not only during the high altitude flying polluting the high atmosphere, but due to the today very busy and the continuously increasing ground aircraft motion (taxiing) contaminating the close surroundings of the airport. With some innovation and technological development we can make the airports not only more environmentally friendly but also cost effective. In this paper I would like to introduce the possible use of renewable energy sources and the ground movement of aircraft without their own engines.

• Ragweed, Blessing or Curse?

  51-55

  Endre Pölös

  Ferenc Baglyas

  Viktor József Vojnich

  Views:

  114

  Ragweed (Ambrosia artemisiifolia) has become our most widespread weed. It causes a significant economic damage, on the other hand it causes pollen allergy affecting 20% of the country's population. Therefore its reduction has become a major task. An environmentally friendly method has been developed for its destruction by bioherbicides. This bioherbicid contains allochemical retardants. Allelochemicals are active chemical inhibition ingredients between plants (allelopathy). This method has been applied in the Kiskunság National Park (KNP) and the urban areas in the city of Kecskemét. We also present the typical therapeutic effect of ragweed, widely used in North American Indian culture.

• Is startup may be the solution for climate change?

  94-101

  Attila Szakács

  Zsolt Szakács

  Views:

  131

  Today, unemployment is caused by environmental and economic changes are burning quite a problem around the world. With startups over the past 10 years, the economy is showing more and more increasing trend, so why not make it against the climate change fight, even while the young entrepreneurs also support the economy. There are many things to do, which is still untapped, including the use of geothermal and renewable energy resources, which not only
  reduced dependence on foreign countries, but also new jobs could be created using environmentally friendly methods. The innovative emerging entrepreneurs’ maybe will soon find a solution for climate change, because this phenomenon is certainly all the inhabitants of the earth directly or indirectly exercise influence.

• Energy Resources of Unmanned Aircrat Vehicle

  92-100

  Márta Juhász

  Bertold Békési

  Views:

  114

  Aviai on is the quickest and most praci cal way of locomoi on, to which people have been paying at eni on for thousands of years. Today – on account of air traffi c, energy crisis and environmentalism – the power source of the aircrat became a key issue. In addii on to fl ight safety, there is a growing emphasis on environmentally friendly operai on. The ineffi cient burning of fossil fuels comes hand in hand with the signifi cant pollutant emission and noise pollui on which bother even those living far from the airports. Nowadays the most important objeci ve of researchers and developers is to create an effi cient, clean and quiet airplane, thus as a new idea they at empt to ui lize electricity in this form on board the aircrat . The ari cle presents some various energy resources through some example of unmanned aerial vehicle.