Title: NINHA: Noise Impact of aircraft with Novel engine configurations in mid- to High Altitude operations
Abstract: The potential introduction of aircraft fitted with advanced counter-rotating open rotor (CROR) engine power plants should contribute significantly to the reduction of fuel burn and gaseous emissions. In the 1980s, prototypes of the first generation of open rotor engines were developed and tested. One of the findings was that the noise generated by these engines, even in the en-route flight phase, could be considered significant, thus hazarding public acceptance. Since then significant effort has been dedicated to improving the CROR aero-acoustic design; the new generation of CROR engines currently envisaged will be much quieter than its predecessors. The project was organised around 3 main challenges: 1. Adapt existing models for long-range propagation and validate them 2. Predict noise levels on ground generated by CROR en-route 3. Assess ground noise impact of CROR re. conventional powerplant This paper presents the main results of NINHA and gives recommendations for future work on CROR en-route noise.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
Access and Citation
Cited By Count: 1
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot