Sentences with phrase «aircraft engine exhaust»

NASA scientists have found that cirrus clouds, formed by contrails from aircraft engine exhaust, are capable of increasing average surface temperatures enough to account for a warming trend in the United States that occurred between 1975 and 1994.

Contrails are produced by hot aircraft engine exhaust mixing with the cold air that is typical at cruise altitudes several miles above Earth's surface, and are composed primarily of water in the form of ice crystals... Researchers are most interested in persistent contrails because they create long - lasting, and sometimes extensive, clouds that would not normally form in the atmosphere, and are believed to be a factor in influencing Earth's environment.

Not exact matches

The aircraft features a powerful Rotax engine with a twin exhaust system, designed for maximum efficiency in flight.

The engine features Fuel Saver cylinder deactivation technology, cooled exhaust gas recirculation, variable valve timing, a high - volume oil cooler, oil jets for piston cooling, and aircraft - grade stainless steel gaskets and fasteners for improved durability at high temperatures.

Retune jet aircraft engines to generate ultrafine soot instead of the low - particulate exhaust normally desired.

Emissions were calculated from the information in the ICAO Engine Exhaust Emissions Data Bank (ICAO, 1995), through the use of Boeing «Method 2» procedures (Baughcum et al., 1996b, Appendix D), which allow extrapolation of sea - level data in the ICAO data bank to the operating altitudes and temperatures encountered throughout the aircraft flight profile.

A Contrail is exhaust from an aircraft engine cooling very rapidly below the dew point temperature and condensing into a visible trail of microscopic droplets.