Development of Fly Neighborly helicopter model specific operational noise abatement guidance from acoustic flight test data

2021 ◽  
Vol 263 (1) ◽  
pp. 5671-5677
Author(s):  
Juliet Page ◽  
Amanda Rapoza ◽  
Eric Jacobs
Keyword(s):  
Test Data ◽  
Noise Exposure ◽  
Flight Test ◽  
Operating Conditions ◽  
Noise Emission ◽  
Noise Abatement ◽  
Local Conditions ◽  
Planning Stage ◽  
Helicopter Flight ◽  
Us Government

Improved helicopter noise abatement guidance has been developed based on acoustic test data acquired by NASA, FAA and Volpe in support of the Helicopter Association International (HAI)'s Fly Neighborly Program. This higher fidelity material was developed to supplement previous training programs based on pilot and operator feedback. The manner of presentation allows pilots to readily interpret the directional noise emission of their vehicle at different operating conditions. Flight path, airspeed, approach descent rate, and deceleration rate can be assessed to optimize flight patterns both during the pre-flight planning stage and in real time during flight operations in response to local conditions and events. The resultant sound directivity would be displayed as colored noise exposure contours overlaid onto a map of the area in the vicinity of the helicopter. New Fly Neighborly training modules have been developed utilizing directional operational noise plots based on Volpe's Advanced Acoustic Model (AAM) modeling with empirical sound sphere data from dedicated US Government helicopter flight tests. This paper will describe the acoustic analyses and will present the updated noise guidance for the AS350, AS365, AW139, Bell 205, Bell 206, Bell 407, R-44, R-66 and S-76D helicopters.

scholarly journals Correlation of SA349/2 Helicopter Flight Test Data with a Comprehensive Rotorcraft Model

1988 ◽  
Vol 33 (2) ◽  
pp. 31-42 ◽  
Author(s):  
Gloria K. Yamauchi ◽  
Ruth M. Heffernan ◽  
Michel Gaubert
Keyword(s):  
Test Data ◽  
Flight Test ◽  
Helicopter Flight

scholarly journals Seafarers’ Perception and Attitudes towards Noise Emission on Board Ships

2021 ◽  
Vol 18 (12) ◽  
pp. 6671
Author(s):  
Luka Vukić ◽  
Vice Mihanović ◽  
Luca Fredianelli ◽  
Veljko Plazibat
Keyword(s):  
Work Experience ◽  
Noise Exposure ◽  
Environmental Pollutant ◽  
Mitigation Measures ◽  
Noise Emission ◽  
Noise Mitigation ◽  
Noise Abatement ◽  
Personal Protection Equipment ◽  
Education And Awareness ◽  
State Of Affairs

Noise has long been neglected as an environmental pollutant and impairment health factor in maritime transport. Recently, acoustic pollution indicates the highest growth in transport external cost unit values. In 2020, questionnaires were submitted to seafarers to examine their noise exposure and perception on board and attitudes towards noise abatement measures. Responses of 189 participants were processed using descriptive statistics and Likert scale valuation, while their consistency was tested with indirect indicators using linear regression and correlation test. Results show that more than 40% of respondents do not consider noise as a significant environmental problem. The negative perception among respondents with ≥10 years of work experience was much lower (23.53%). Most are aware of the onboard noise harmful effects that can influence their health. Despite that, they use personal protection equipment only sometimes. A higher positive perception was recorded in groups of respondents with a university degree (90%), work experience longer than ten years (82.35%), and monthly income higher than 4000 € (70%). Respondents are not strongly motivated to participate in funding noise mitigation measures, and such a viewpoint is not related to their monthly incomes. The low awareness and motivation regarding acoustic pollution generally shown by the surveyed seafarers should be watched as a threat by the company managers. Better education and awareness are likely to be crucial to change the current state of affairs.

Analysis of OH-6A Helicopter Flight Test Data Using Lissajous Figures

1997 ◽  
Vol 34 (1) ◽  
pp. 20-22 ◽  
Author(s):  
Nesrin Sarigul-Klijn ◽  
Martinus M. Sarigul-Klijn
Keyword(s):  
Test Data ◽  
Flight Test ◽  
Helicopter Flight ◽  
Lissajous Figures

Helicopter Flight Test Data Simulation Using CCSU Flight Simulator

2019 ◽  
Author(s):  
Fu-Shang (John) Wei ◽  
Kenneth Trochsler ◽  
David J. Broderick
Keyword(s):  
Test Data ◽  
Flight Test ◽  
Flight Simulator ◽  
Data Simulation ◽  
Helicopter Flight

scholarly journals Vienna international airport noise abatement

2016 ◽  
Vol 6 (1) ◽  
pp. 61
Author(s):  
Heidelinde Jelinek-Nigitz
Keyword(s):  
Online Survey ◽  
Noise Exposure ◽  
Traffic Noise ◽  
Basic Structure ◽  
Air Traffic ◽  
Federal State ◽  
Noise Emission ◽  
Online Questionnaire ◽  
Noise Abatement ◽  
International Airport

Purpose: On the topic of sustainable aviation a study was carried out to measure the difference between the actual change in air traffic noise and the airport’s residents’ perception of the noise change at Vienna International Airport. Therefore, a questionnaire was developed in cooperation with the airport and an online survey was conducted.Design/methodology/approach: For the survey of the opinion of the affected population of the surrounding communities, a web based online questionnaire is created and distributed via various channels including e-mail, and online forums. After the basic structure of the questionnaire had been defined, the questions were developed in cooperation with employees form the environmental department of VIE, who had a sustainable influence on the questions’ order and formulation. As the survey was supposed to be answered by residents around VIE.Findings: Results of the online study show that only parts of the participants are affected by air traffic noise at VIE. Even less experienced a significant change over the last five years. About one third of the participants stated that they are affected by air traffic noise in one way or another. The majority of these people live in Lower Austria, the federal state in which the airport is located. The participants obviously judge air traffic noise during day time more importantly than air traffic noise at night.Research limitations/implications: Due to the low number of returns, no statistically relevant conclusions can be drawn, the results of the survey can be used to make some general statements.Originality/value: Economic growth and deregulation lead to growing aircraft operations. Vienna International Airport with its approximately 260,000 flight movements per year is the biggest airport in Austria and a major hub in Europe. The combination of constantly growing air transport and the resulting noise exposure, as well as the steadily increasing sensitization of the population, bring the issue of aircraft noise emission into the increased interest of the stakeholder of an airport. The study compares the extent of the subjective perceived and the actual noise emissions’ change over the last years.

Stall Buffet Modeling using Swept Wing Flight Test Data

2021 ◽  
Author(s):  
Sven Marschalk ◽  
Peter C. Luteijn ◽  
Dirk van Os ◽  
Daan M. Pool ◽  
Coen C. de Visser
Keyword(s):  
Test Data ◽  
Flight Test ◽  
Swept Wing
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