Aircraft Future

® Prepare yourself for a paradigm shift as future aircraft designs take flight, promising to revolutionize the way we travel and explore the world.

Engines on top will reduce aircraft noise enormously (no reflection on wings).
Nice figures about the possible decrease of dB’s in the coming twenty years, like 51 dB below stage 4 in 2035.

Happily at the moment they are not able to build supersonic aircraft as chapter 3.
The technicians at the conference don’t believe in electric aircraft: it was no subject.
Noise reduction with Boundary Layer Ingestion: engines as part of the fuselage; models show possibilities, but don’t achieve the NASA midterm goals of a reduction with 32-42 dB.
There are serious gains possible with redesigning landing gear and flaps (reference article).
But all measures together don’t achieve the NASA goals of a reduction with 32-42 dB in 2030.
Overall: today’s computer modelling shows what is possible and what not, instead of all trial and error.

References to Aviation Noise Impact, Basner e.a. 2017 (non-acoustic factors, sleep disturbances, learning processes, health impact).
Nuisances differ from complaints.
Lden versus frequencies versus peeks.

Watch out for low-boom of new generation supersonic aircraft.
Real weather prognoses qua impact of wind for noise forecast in Sweden (CSA – SAFT).
US: although the number of people that suffer are only 5% of the number in earlier years, the number of concerned people has grown.

In early days little flights with much noise, now many flights with less noise; not by definition better.
More precise navigation drives people under the flight paths mad.
“Put a loudspeaker under the aircraft with music only +10dB”.
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