Environmental Challenge: How to Close the Gap Between Policy and Technology?

Pfänder, Holger; Hollingsworth, Peter; Jimenez, Hernado; Won, Henry

doi:10.2514/6.2009-7003

Cited by 6 publications

(1 citation statement)

References 3 publications

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“…However, there is a significant body of work that is aimed at addressing single aircraft to fleet level impacts. [3][4][5][6][7] Unfortunately, even with these linkages it will be necessary for the design engineer to meet the existing and future certification requirements. This presents a conundrum, are there commonly used engineering or marketing metrics that are both easy to communicate and map well with both single event and fleet level impacts?…”

Section: Introductionmentioning

confidence: 99%

Investigating the Potential of Using Quota Count as a Design Metric

Hollingsworth

Sulitzer

2011

Journal of Aircraft

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Identifying easy to use and communicate extensive design metrics for aircraft noise could be of substantial benefit to the aircraft design community. The current means of communication often revolves around margin to the certification stringencies. These stringencies are hard to communicate and not directly related to external impact. A good design metric correlates well with the individual aircraft's effect on these broader measures.This paper proposes the use of Quota Count, which was devised as a means of limiting night-time exposure to single equivalent events at London area airports. It is directly related to the actual energy emitted by the an aircraft and the resulting time average values observed on the ground. It is straightforward to communicate and comprehend. It is based upon the certification noise values, and therefore, straightforward for a design engineer to model. This paper answers the question does Quota Count relate well with cumulative measures especially day-night noise level estimates of the area exposed to a given cumulative level? Given that Quota Count, and a simple cumulative Quota Count model correlate highly with these measures, it is reasonable to suggest that Quota Count be used as a primary noise metric for new designs.

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Section: Introductionmentioning

confidence: 99%