We give a comprehensive illustration of a new approach to rotorcraft noise abatement carried out in the framework of the Clean Sky collaborative project MANOEUVRES. This approach is based on technologies and tools for real-time, in-flight monitoring of the emitted noise. By means of a new cockpit instrumentation, the Pilot Acoustic Indicator (PAI), the current noise impact is presented to the pilot in a condensed, practical form as an aid in performing quieter maneuvers. The PA1 algorithm makes use of several ingredients that have been implemented and tested within the project, including offlinc steady and unstcady acoustic prcdictions, and estimation of flight mcchanics paramctcrs based on the measurements derived from a new contactless rotor state measurement system. The latter is capable to accurately acquire the motion of the rotor blades, allowing the computation of non-directly-measurable quantities such as tip-path-plane angle of attack and thrust coeficient, and offering a reliable support for the development of enhanced attitude control laws based on the Rotor State Feedback approach. The paper reports on the current state of the project, which is close to its completion.

Innovative Rotor-State Measurements Enabling Helicopter In-Flight Noise Monitoring and Enhanced Attitude Control

TRAINELLI, LORENZO;LOVERA, MARCO;ROLANDO, ALBERTO LUIGI MICHELE;ZAPPA, EMANUELE
2016-01-01

Abstract

We give a comprehensive illustration of a new approach to rotorcraft noise abatement carried out in the framework of the Clean Sky collaborative project MANOEUVRES. This approach is based on technologies and tools for real-time, in-flight monitoring of the emitted noise. By means of a new cockpit instrumentation, the Pilot Acoustic Indicator (PAI), the current noise impact is presented to the pilot in a condensed, practical form as an aid in performing quieter maneuvers. The PA1 algorithm makes use of several ingredients that have been implemented and tested within the project, including offlinc steady and unstcady acoustic prcdictions, and estimation of flight mcchanics paramctcrs based on the measurements derived from a new contactless rotor state measurement system. The latter is capable to accurately acquire the motion of the rotor blades, allowing the computation of non-directly-measurable quantities such as tip-path-plane angle of attack and thrust coeficient, and offering a reliable support for the development of enhanced attitude control laws based on the Rotor State Feedback approach. The paper reports on the current state of the project, which is close to its completion.
72nd American Helicopter Society International Annual Forum 2016
9781510825062
File in questo prodotto:
File Dimensione Formato  
TRAIL02-16.pdf

Accesso riservato

Descrizione: Paper
: Publisher’s version
Dimensione 580.34 kB
Formato Adobe PDF
580.34 kB Adobe PDF   Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/991256
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 1
  • ???jsp.display-item.citation.isi??? ND
social impact