The Federal Aviation Administration is committed to the
development of continuous lower energy, emissions, and noise
(CLEEN) technologies for civil subsonic jet airplanes. This is
to help achieve the Next Generation Air Transportation System
goals to increase airspace system capacity by reducing
significant community noise and air quality emissions impacts in
absolute terms, and limit or reduce aviation greenhouse gas
emissions impacts on the global climate. The CLEEN program is
focused on reducing current levels of aircraft noise, air
quality, and greenhouse gas emissions, and energy use, and
advancing alternative fuels for aviation use. The focus of the
CLEEN Program is to PARTNER Project 36 is a capability
demonstration of how the Environmental Design Space, being
developed under Project 14, could support the assessment of the
potential technology packages that would be awarded under the
future CLEEN program as applied to two current EDS vehicle
models, specifically the single aisle and twin aisle models.