> The Lee-Gardner Amendment would help us reduce drag by allowing us to make our engines narrower. Current engine noise rules for new supersonic aircraft are mo

> The Lee-Gardner Amendment would help us reduce drag by allowing us to make our engines narrower. Current engine noise rules for new supersonic aircraft are more stringent than those for the existing subsonic fleet. By setting our engine noise to the same levels as existing subsonic airplanes, we could make our engines produce so much less drag that we would save 20–40 percent on fuel, depending on whether you use this year’s or next year’s rules as a baseline. They're narrowing the engine to get less drag and setting the noise to the same levels as conventional planes. Skeptical. I know what narrower means but noise is a result rather than a parameter.