Sentences with phrase «airplane fuel efficiency improvements»

Not exact matches

Efficiency alone — even in the form of aircraft with improved engines and designs such as the Boeing 787, expected to deliver a 20 percent improvement in fuel efficiency over existing big airplanes — is not tEfficiency alone — even in the form of aircraft with improved engines and designs such as the Boeing 787, expected to deliver a 20 percent improvement in fuel efficiency over existing big airplanes — is not tefficiency over existing big airplanes — is not the answer.