A GRAPHICAL OPTIMIZATION OF TAKE-OFF NOISE ABATEMENT PROCEDURES FOR SUBSONIC AIRCRAFT
✍ Scribed by L. Norgia
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- English
- Weight
- 421 KB
- Volume
- 222
- Category
- Article
- ISSN
- 0022-460X
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✦ Synopsis
This paper describes a numerical approach to the simulation of noise contours generated during aircraft operations. Common features of many existing noise-contour programs make these procedures unsuitable for on-line piloted-simulator use. In fact, they usually require large computational tools and exhibit complex structure, so that they generally run quite slowly. The method proposed here is an attempt to overcome some of the above drawbacks. It works for arbitrarily complex take-o and landing paths, and reveals the in¯uence of several quantities on the shape and size of the contours. Besides, the calculations are simple enough to be implemented on a handheld programmable calculator. The method runs fast, and quickly provides contour shape, evaluates area and analyzes main characteristics of the end. The method has been used to optimize noise abatement procedures for subsonic aircraft; for every take-o procedure the model can generate an isofootprint on the ground which helps the operator to choose the best take-o solution.