More
Contact
Submit
PremiumVIVAnews -When the door of the plane opened, the machine is turned on, then wait for passengers aboard. After they go up, tighten the belt, then wait for the cue. The door is closed, move on to the runway, the aircraft back waiting for their turn to fly.
The rest of the time waiting for that scatter a lot of air pollution caused by combustion in jet engines. Whereas, in the United States alone, every day almost 50 thousand aircraft undergoing the process of waiting (commonly called idling), even though the machine works with low power because the plane does not move.
"If you are in the order of the 46th to take off, You can spend time for one hour in the idling conditions," said Allen Robinson, Carnagie Mellon University mechanical engineer, Pittsburgh, United States, as quoted from Science News, May 30, 2011.
Recently, Robinson and his colleagues conducted an experiment to measure the particles out of the jet engine is idling. In research, Robinson and his colleagues take and measure pollution. They then let pollution under the rays of the Sun, and then do the measurement again.
When the Sun hit the molecule produced the machine, he causes a chemical reaction. The reaction was then affect pollution, making it more dangerous than the molecules of the exile was just out of the jet engine. It gets worse, after a few hours is probably Sun, the average mass of the particle pollution was up 35.
"The figure was very surprised us," said Robinson. "From the way this latest measurements indicated that the scientists for this highly underestimate the pollution produced by the airport," he said.
Earlier, in the research of the level of air pollution at airports, scientists took samples of the particle pollutants and gas out of the jet engine. As for the research done Robinson and his colleagues measure also the influence of sunlight, specifically ultraviolet light to these pollutants.
"The airport is likely the source of pollution is more significant, especially after the known particles are very small which looks like this," said Ronald Henry, another researcher from the University of Southern California, Los Angeles. "Whereas, the emissions of the exile of the airport itself is on the rise," he said.
At a time when pollution generated by private cars and trucks declined, the airport thus increased considerably. (sj)
This post was made using the Auto Blogging Software from WebMagnates.org This line will not appear when posts are made after activating the software to full version.
