2. Background:
Air travel is continuing to experience the
fastest growth among all modes of
transport.
Increasing total fuel consumption and
the potential impacts on the global
atmosphere have motivated to seek
various emissions reduction options.
3. Fuel Consumption:
Currently, aviation fuel consumption
corresponds to 2 to 3% of the total fossil
fuels used worldwide, and more than
80% of this is used by civil aviation.
A number of direct and indirect species of
aircraft emissions have been identified to
affect climate.
Indirect influences on climate include the
production of ozone in the troposphere.
4. Aircraft performance:
Development of lightweight metal alloys,
advanced aerodynamic designs for engines
and aircraft spares, and advanced gearing
systems all enabled the fuel economy
advantages.