ENVIRONMENTALLY RESPONSIBLE AVIATION-REAL SOLUTIONS FOR ENVIRONMENTAL CHALLENGES FACING AVIATION

摘要

The combined reality of persistently strongrngrowth in air traffic and the vital economic rolernof the air transport system result in continuedrndemand for the progress of technology for thernreduction of aircraft noise, emissions of oxidesrnof nitrogen, and fuel burn. NASA'srnEnvironmentally Responsible Aviation (ERA)rnproject has set aggressive goals in these threernareas including a noise goal of 42 dBrncumulative below the Stage 4 certification level.rnThe goal for the reduction of oxides of nitrogenrnis 75% below the current standard. The fuelrnburn reduction goal is 50% below that of arncurrent state-of-the-art aircraft. Furthermore,rnthe overall goal of ERA is to maturerntechnologies that will meet these goalsrnsimultaneously and with a timeframe of 2020rnfor technical readiness. This paper outlines thernkey technologies and the progress achieved torndate toward the goals.