What are the relative noise levels in various aviation scenarios for observers seated inside an aircraft? I'm sure the specifics depend on model but I'm curious if any general trends can be drawn that are model agnostic.
e.g. Let's consider the following cases for a start:
- Jet aircraft e.g. 747
- Jet aircraft gliding with all engines out
- Jet aircraft with noise insulation removed
- Piston driven prop. aircraft
We could rate on an arbitrary 1 to 100 (noisiest) scale. Even better, in case data is available, I'd love to see the dB values. (@vortaq7's comment below)
I suppose speed will matter so we can probably use their typical cruise conditions for each case?
One motivation is to tease apart contributions from engine vs aerodynamic noise. Another is to quantify the effectiveness of sound insulation.
I suppose most of us never get a chance to really hear an all engines out jet nor to fly in a jet with no sound proofing.
PS. This question was motivated by some comments here: