Question

What is the best way to reduce aircraft noise?

(a) By using shield around aircraft

(b) By using quieter jet engines

(c) By using heavy propellants

(d) By using white paint

This question was posed to me in final exam.

This intriguing question comes from Noise Pollution Control Techniques topic in portion Environmental Pollution of Energy Management

Answer 1

Right answer is (b) By using quieter jet engines

Best 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.