국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Auralization of Hybrid Wing Body Aircraft Flyover Noise from System Noise Predictions
저자	Rizzi, Stephen A.;; Aumann, Aric R.;; Lopes, Leonvard V.;; Burley, Casey L.
Keyword	AEROACOUSTICS;; AERODYNAMIC CONFIGURATIONS;; AERODYNAMIC NOISE;; AIRCRAFT NOISE;; NOISE PREDICTION;; PROPULSION;; SYSTEMS ANALYSIS;; TRAJECTORIES;; WINGS
URL	http://hdl.handle.net/2060/20130003187
보고서번호	AIAA Paper 2013-0542
발행년도	2013
출처	NTRS (NASA Technical Report Server)
ABSTRACT	System noise assessments of a state-of-the-art reference aircraft (similar to a Boeing 777-200ER with GE90-like turbofan engines) and several hybrid wing body (HWB) aircraft configurations were recently performed using NASA engine and aircraft system analysis tools. The HWB aircraft were sized to an equivalent mission as the reference aircraft and assessments were performed using measurements of airframe shielding from a series of propulsion airframe aeroacoustic experiments. The focus of this work is to auralize flyover noise from the reference aircraft and the best HWB configuration using source noise predictions and shielding data based largely on the earlier assessments. For each aircraft, three flyover conditions are auralized. These correspond to approach, sideline, and cutback operating states, but flown in straight and level flight trajectories. The auralizations are performed using synthesis and simulation tools developed at NASA. Audio and visual presentations are provided to allow the reader to experience the flyover from the perspective of a listener in the simulated environment.