NOISEMAP

1
Overview of NoiseMap 7
by Ken Plotkin, Juliet Page, Micah Downing Wyle
Laboratories, Inc. International Military Noise
Conference Baltimore, MD 24-26 April 2001
2
NoiseMap

• Fixed-Wing (primary)
• Rotary-wing (secondary)
• Cumulative Assessment
• Noise Footprints

3
NOISEMAP Suite

• NOISE FILE (USAF)
• BASEOPS (Ball Aerospace)
• NMAP 7.0 (Wyle Laboratories)
• topography
• NMPLOT (Wasmer Consulting)

4
NOISEFILE Database

• Flyover Noise
• Ground Run up Noise
• 1/3 octave band spectra

93NC
Spectral NOISEFILE
96.5NC
5
BASEOPS 7 User Interface
6
NoiseMap Data Requirements

• Airfield Characteristics
• Runway Coordinates
• Flight Tracks (ground paths)

7
NoiseMap Data Requirements (contd)

• Flight Profiles
• Aircraft type
• Flight Track
• Altitude, Power, Speed
• Number of Events

8
Flight Profile
9
Flight Profile
10
NOISEMAP Data Requirements (contd)

• Runup Locations
• Runup Profiles
• Aircraft/engine type
• Runup heading
• Power setting, duration
• Number of events

11
NoiseMap Computational Capabilities

• Daily noise metrics
• (DNL, CNEL, LEQ, NEF, WECPNL)
• Contours
• Sensitive receptor calculations
• Single-event metrics
• Topography effects on noise

12
Topography Effects on Noise Propagation

• Same propagation algorithms as in NMSIM
• A-weighted (simplified B. Plovsing)
• Terrain effects
• Flat
• Uphill (valley)
• Downhill
• Wedge with flats
• Ground Impedance
• Transition between hard and soft
• Water surface

13
Topography Effects Examples
Hard vs. Soft Ground
Hard
Soft
14
Topography Effects Examples
Uphill
Ground Slope
15
Topography Effects Examples
Airfield surrounded by water Primarily military
jet ------- no topography effects -------
with topography effects
16
NoiseMap GRD File (NMPLOT)
17
NoiseMap 7 Summary

• Technical Oversight AFRL/HECB (McKinley)
• Distribution AFCEE/ECC (Mabie)
• Ready for Distribution June 2001
• 2 Version of NoiseMap 7.0
• Downloadable version Free, no mapping capability
• CD version License fee, mapping capability