Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723481673
Category :
Languages : en
Pages : 122
Book Description
Noise levels around airports and airbases in the United States arc computed via the FAA's Integrated Noise Model (INM) or the Air Force's NOISEMAP (NMAP) program. These models were originally developed for use in the vicinity of airports, at distances which encompass a day night average sound level in decibels (Ldn) of 65 dB or higher. There is increasing interest in aircraft noise at larger distances from the airport. including en-route noise. To evaluate the applicability of INM and NMAP at larger distances, a measurement program was conducted at a major air carrier airport with monitoring sites located in areas exposed to an Ldn of 55 dB and higher. Automated Radar Terminal System (ARTS) radar tracking data were obtained to provide actual flight parameters and positive identification of aircraft. Flight operations were grouped according to aircraft type. stage length, straight versus curved flight tracks, and arrival versus departure. Sound exposure levels (SEL) were computed at monitoring locations, using the INM, and compared with measured values. While individual overflight SEL data was characterized by a high variance, analysis performed on an energy-averaging basis indicates that INM and similar models can be applied to regions exposed to an Ldn of 55 dB with no loss of reliability. Page, Juliet A. and Plotkin, Kenneth J. and Carey, Jeffrey N. and Bradley, Kevin A. Langley Research Center AIRCRAFT NOISE; NOISE INTENSITY; NOISE REDUCTION; FLIGHT CHARACTERISTICS; RADAR TRACKING; POSITION (LOCATION); FLIGHT OPERATIONS; SOUND PROPAGATION; NOISE PREDICTION (AIRCRAFT); AEROACOUSTICS; AUTOMATED RADAR TERMINAL SYSTEM; RELIABILITY; AIRPORTS; APPLICATIONS PROGRAMS (COMPUTERS); EXPOSURE...
Validation of Aircraft Noise Models at Lower Levels of Exposure
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723481673
Category :
Languages : en
Pages : 122
Book Description
Noise levels around airports and airbases in the United States arc computed via the FAA's Integrated Noise Model (INM) or the Air Force's NOISEMAP (NMAP) program. These models were originally developed for use in the vicinity of airports, at distances which encompass a day night average sound level in decibels (Ldn) of 65 dB or higher. There is increasing interest in aircraft noise at larger distances from the airport. including en-route noise. To evaluate the applicability of INM and NMAP at larger distances, a measurement program was conducted at a major air carrier airport with monitoring sites located in areas exposed to an Ldn of 55 dB and higher. Automated Radar Terminal System (ARTS) radar tracking data were obtained to provide actual flight parameters and positive identification of aircraft. Flight operations were grouped according to aircraft type. stage length, straight versus curved flight tracks, and arrival versus departure. Sound exposure levels (SEL) were computed at monitoring locations, using the INM, and compared with measured values. While individual overflight SEL data was characterized by a high variance, analysis performed on an energy-averaging basis indicates that INM and similar models can be applied to regions exposed to an Ldn of 55 dB with no loss of reliability. Page, Juliet A. and Plotkin, Kenneth J. and Carey, Jeffrey N. and Bradley, Kevin A. Langley Research Center AIRCRAFT NOISE; NOISE INTENSITY; NOISE REDUCTION; FLIGHT CHARACTERISTICS; RADAR TRACKING; POSITION (LOCATION); FLIGHT OPERATIONS; SOUND PROPAGATION; NOISE PREDICTION (AIRCRAFT); AEROACOUSTICS; AUTOMATED RADAR TERMINAL SYSTEM; RELIABILITY; AIRPORTS; APPLICATIONS PROGRAMS (COMPUTERS); EXPOSURE...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723481673
Category :
Languages : en
Pages : 122
Book Description
Noise levels around airports and airbases in the United States arc computed via the FAA's Integrated Noise Model (INM) or the Air Force's NOISEMAP (NMAP) program. These models were originally developed for use in the vicinity of airports, at distances which encompass a day night average sound level in decibels (Ldn) of 65 dB or higher. There is increasing interest in aircraft noise at larger distances from the airport. including en-route noise. To evaluate the applicability of INM and NMAP at larger distances, a measurement program was conducted at a major air carrier airport with monitoring sites located in areas exposed to an Ldn of 55 dB and higher. Automated Radar Terminal System (ARTS) radar tracking data were obtained to provide actual flight parameters and positive identification of aircraft. Flight operations were grouped according to aircraft type. stage length, straight versus curved flight tracks, and arrival versus departure. Sound exposure levels (SEL) were computed at monitoring locations, using the INM, and compared with measured values. While individual overflight SEL data was characterized by a high variance, analysis performed on an energy-averaging basis indicates that INM and similar models can be applied to regions exposed to an Ldn of 55 dB with no loss of reliability. Page, Juliet A. and Plotkin, Kenneth J. and Carey, Jeffrey N. and Bradley, Kevin A. Langley Research Center AIRCRAFT NOISE; NOISE INTENSITY; NOISE REDUCTION; FLIGHT CHARACTERISTICS; RADAR TRACKING; POSITION (LOCATION); FLIGHT OPERATIONS; SOUND PROPAGATION; NOISE PREDICTION (AIRCRAFT); AEROACOUSTICS; AUTOMATED RADAR TERMINAL SYSTEM; RELIABILITY; AIRPORTS; APPLICATIONS PROGRAMS (COMPUTERS); EXPOSURE...
Validation of Aircraft Noise Models at Lower Levels of Exposure
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 124
Book Description
Validation of Aircraft Noise Prediction Models at Low Levels of Exposure
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721092222
Category :
Languages : en
Pages : 102
Book Description
Aircraft noise measurements were made at Denver International Airport for a period of four weeks. Detailed operational information was provided by airline operators which enabled noise levels to be predicted using the FAA's Integrated Noise Model. Several thrust prediction techniques were evaluated. Measured sound exposure levels for departure operations were found to be 4 to 10 dB higher than predicted, depending on the thrust prediction technique employed. Differences between measured and predicted levels are shown to be related to atmospheric conditions present at the aircraft altitude. Page, Juliet A. and Hobbs, Christopher M. and Plotkin, Kenneth J. and Stusnick, Eric and Shepherd, Kevin P. (Technical Monitor) Langley Research Center NAS1-20103; RTOP 538-03-15-01
Publisher: Createspace Independent Publishing Platform
ISBN: 9781721092222
Category :
Languages : en
Pages : 102
Book Description
Aircraft noise measurements were made at Denver International Airport for a period of four weeks. Detailed operational information was provided by airline operators which enabled noise levels to be predicted using the FAA's Integrated Noise Model. Several thrust prediction techniques were evaluated. Measured sound exposure levels for departure operations were found to be 4 to 10 dB higher than predicted, depending on the thrust prediction technique employed. Differences between measured and predicted levels are shown to be related to atmospheric conditions present at the aircraft altitude. Page, Juliet A. and Hobbs, Christopher M. and Plotkin, Kenneth J. and Stusnick, Eric and Shepherd, Kevin P. (Technical Monitor) Langley Research Center NAS1-20103; RTOP 538-03-15-01
Validation of Aircraft Noise Prediction Models at Low Levels of Exposure
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 102
Book Description
Aircraft Noise Exposure
Author: H. W. Veerbeek
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
FAA Integrated Noise Model Validation
Author: R. G. Gados
Publisher:
ISBN:
Category : Airport noise
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category : Airport noise
Languages : en
Pages :
Book Description
Aircraft Noise
Author: Oleksandr Zaporozhets
Publisher: CRC Press
ISBN: 0415240662
Category : Technology & Engineering
Languages : en
Pages : 435
Book Description
Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly skilled and knowledgeable engineers. This book is for them. It shows you how accurate and reliable information about aircraft noise levels can be gained by calculations using appropriate generation and propagation models, or by measurements with effective monitoring systems. It also explains how to allow for atmospheric conditions, natural and artificial topography as well as detailing necessary measurement techniques.
Publisher: CRC Press
ISBN: 0415240662
Category : Technology & Engineering
Languages : en
Pages : 435
Book Description
Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly skilled and knowledgeable engineers. This book is for them. It shows you how accurate and reliable information about aircraft noise levels can be gained by calculations using appropriate generation and propagation models, or by measurements with effective monitoring systems. It also explains how to allow for atmospheric conditions, natural and artificial topography as well as detailing necessary measurement techniques.
Monthly Catalog of United States Government Publications
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 892
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 892
Book Description
NASA Technical Memorandum
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 172
Book Description
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 172
Book Description
Community Noise Exposure Resulting from Aircraft Operations
Author: Bolt, Beranek, and Newman, inc
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 120
Book Description
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 120
Book Description