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Aviation and environment

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    The influence of aviation on environment
  •   Study   Slideshow
  • What is this?
    contrails
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  • What is 'contrails' short for?
    condensation trails
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  • . What are contrails primarily composed of?
    water in the form of ice crystals
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  • What is the name of the cloud created from spread contrails?
    cirrus aviaticus
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  • How much can the use of biofuels reduce contrail generation, according to the research performed with flying DC-8 ?
    50 to 70 percent, using a 50% blend of conventional Jet A1 fuel and HEFA
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  • What negative effect on global warming do contrails have?
    They act as a radiative forcing - trap the heat in the atmosphere
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  • Give three ideas how the noise pollution can be reduced.
    improving engines, restrictions on flights during night, using blast fences
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  • Give example of different waste generated by aviation industry. (5)
    terminal waste (plastic/ glass/ paper), sewage, vehicles, transport to/ from airport, maintenance fluids,
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  • What is the de-icing fluid mage of?
    45% water and 55% glycol
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  • What does an aircraft emit while flying?
    nitrogen oxides, carbon monoxide, hydrocarbons, water vapor, sulfur oxides, lead, black carbon
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  • Give five ideas how the negative influence of aviation on environment can be reduced.
    improving fuel-efficiency of engines, improving aerodynamics, using more lightweight materials, imposing taxes, reducing domestic flights, improving operations
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  • What is the greenhouse gases emission created by aviation industry (which includes all greenhouse gases, not only CO2)?
    1.9%
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  • What is the CO2 emission of aviation industry?
    2.5% of total emission
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  • What is 'effective radiative forcing’? What should be taken into consideration when calculatng it?
    It's the total impact on warming: CO2- less than half; 66% - non-CO2 forcings; contrails
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  • Explain what "replenished" means.
    Filled up again; freshened
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  • Explain what "gauge" means.
    An instrument for measuring or testing
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