Keyphrases
Helicopter
78%
Acoustics
44%
Rotor
42%
Helicopter Noise
36%
Blade-vortex Interaction Noise
29%
Rotorcraft
29%
Noise Measurement
25%
Maneuvering Flight
25%
Rotor Harmonics
24%
Noise Radiation
24%
Noise Source
22%
Bell
20%
Multirotor Aircraft
19%
Microphone
19%
Harmonic Noise
19%
Operating Conditions
18%
Acoustic Measurements
18%
Main Rotor
17%
Flight Condition
17%
Broadband Noise
14%
Noise Generation
14%
Rotor Noise
13%
Noise Level
12%
Physics-based
12%
Ambient Conditions
11%
Noise Reduction
11%
Tail Rotor
11%
Interaction Noise
11%
Multirotor
10%
Directivity
10%
Acoustic Modeling
10%
Noise Modeling
9%
Turning Flight
9%
Low Noise
9%
Semi-empirical Modeling
9%
Noise Abatement
9%
Noise Source Identification
9%
External Noise
9%
Air Speed
9%
Noise Model
8%
Noise Prediction
8%
Acoustic Prediction
8%
Coaxial Rotor
8%
Source Noise
8%
Modeling Method
7%
Level Flight
7%
Hovering
7%
Mission Planning
7%
Parameter Identification Method
7%
Steady State
7%
Engineering
Rotors
100%
Noise Source
46%
Blade Vortex Interaction
38%
Rotorcraft
28%
Flight Test
27%
Manoeuvring Flight
26%
Measurement Noise
24%
Flight Condition
23%
Broadband Noise
15%
Directivity
15%
Sound Pressure Level
15%
Ambient Condition
14%
Noise Level
14%
Radiated Noise
12%
Level Flight
10%
Main Rotor
10%
Source Separation
9%
Flight Path
8%
Transients
8%
Helicopter Rotors
8%
Test Campaign
7%
Flight Operation
6%
Full Scale
6%
Metrics
6%
Time History
6%
Peak Value
6%
Helicopter Mission
6%
Test Site
6%
Crosswind
6%
Exposure Level
6%
Measurement System
6%
Flight Control
6%
Tunnel
5%
Parametric Study
5%
Microphone Array
5%
Mach Number
5%
Acoustic Pressure
5%
Rotor System
5%
Time Domain
5%
VTOL/STOL Aircraft
5%
