ISSN 2394-5125
 

Research Article 


MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT

OF Orikpete, TG Leton, DRE Ewim.

Abstract
In applied physics, mathematical modeling is the process of describing physical phenomenon such as environmental noise by use of formulae. In testing mathematical models against actual data, the predicted data is compared with the actual data to determine if it fits the developed equation. The Noise gap index (NGI) is a metric that can be used to link rotorcraft over-flight noise with annoyance. The aim of this paper is to develop a mathematical model for Noise Gap Index (NGI) as a function of rotorcraft over-flight and background noise. Objective field measurements were carried out at twenty different locations with equal spread around Mgbuoshimini Community (Nigeria) from 0700-1700 hours for 7 days per location. Spatial distribution of NGI within the study area showed lowest NGI values occur south of the study area and highest NGI values occur north of the study area. A polynomial model was developed for background noise and plot of predicted background noise and actual data yielded a coefficient of determination R2 value of 0.64 which was statistically significantly (P < 0.05) at 5 % level of significance. An exponential model was developed for rotorcraft noise and plot of predicted aircraft noise and actual aircraft yielded a coefficient of determination R2 value of 0.73 which was statistically significantly (P < 0.05) at 5 % level of significance. It was concluded that receptors in areas with high background noise are prone to more annoyance from rotorcraft over-flight, than those in areas with low background noise.

Key words: mathematical modeling, noise gap index, environmental noise, polynomial model, exponential model.


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by OF Orikpete
Articles by TG Leton
Articles by DRE Ewim
on Google
on Google Scholar


How to Cite this Article
Pubmed Style

OF Orikpete, TG Leton, DRE Ewim. MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. JCR. 2020; 7(19): 10097-10110. doi: 10.31838/jcr.07.19.1118


Web Style

OF Orikpete, TG Leton, DRE Ewim. MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. http://www.jcreview.com/?mno=26081 [Access: August 17, 2021]. doi: 10.31838/jcr.07.19.1118


AMA (American Medical Association) Style

OF Orikpete, TG Leton, DRE Ewim. MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. JCR. 2020; 7(19): 10097-10110. doi: 10.31838/jcr.07.19.1118



Vancouver/ICMJE Style

OF Orikpete, TG Leton, DRE Ewim. MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. JCR. (2020), [cited August 17, 2021]; 7(19): 10097-10110. doi: 10.31838/jcr.07.19.1118



Harvard Style

OF Orikpete, TG Leton, DRE Ewim (2020) MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. JCR, 7 (19), 10097-10110. doi: 10.31838/jcr.07.19.1118



Turabian Style

OF Orikpete, TG Leton, DRE Ewim. 2020. MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. Journal of Critical Reviews, 7 (19), 10097-10110. doi: 10.31838/jcr.07.19.1118



Chicago Style

OF Orikpete, TG Leton, DRE Ewim. "MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT." Journal of Critical Reviews 7 (2020), 10097-10110. doi: 10.31838/jcr.07.19.1118



MLA (The Modern Language Association) Style

OF Orikpete, TG Leton, DRE Ewim. "MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT." Journal of Critical Reviews 7.19 (2020), 10097-10110. Print. doi: 10.31838/jcr.07.19.1118



APA (American Psychological Association) Style

OF Orikpete, TG Leton, DRE Ewim (2020) MATHEMATICAL MODELING OF ENVIRONMENTAL NOISE GENERATED BY ROTORCRAFT OVERFLIGHT. Journal of Critical Reviews, 7 (19), 10097-10110. doi: 10.31838/jcr.07.19.1118