Which of the following is an effective method for reducing aircraft noise?
Which of the following is an effective method for reducing aircraft noise? Explanation: Aircraft noise can be reduced significantly by using quieter jet engines. The old engines which cause more noise should be replaced by the new engines which cause less noise. Altering paths and time of day runway is also reduced the noise pollution.
What are the aircraft noise regulations?
Under longstanding FAA policy, the threshold of significant aircraft noise exposure in residential areas is a Day-Night Average Sound Level of 65 decibels (dB). See the “Aviation Noise Abatement Policy,” issued by the Secretary of Transportation and the FAA Administrator in 1976.
What are the 4 categories of an aircraft?
- Single-Engine Land.
- Single-Engine Sea.
- Multi-Engine Land.
- Multi-Engine Sea.
What are the methods used to control airport noise?
In the present study, six noise reduction strategies including the optimization of aircraft type, regulation of number of night flights, flight procedure, modification of operating runway, land use planning and the installation of sound insulation windows were proposed to reduce the impacts of aircraft noise on the ...
WHO guidelines for airplane noise?
For average noise exposure, the GDG strongly recommends reducing noise levels produced by aircraft to below 45 dB Lden, as aircraft noise above this level is associated with adverse health effects.
What is the best way to reduce aircraft noise?
To reduce the noise, aircraft operators can employ a variety of procedures, such as Cutback or derate, Noise Abatement Departure Procedure (NADP) 1 or 2, Continuous Descent Approach (CDA), and Area Navigation (RNAV).