Rat 5
You would work fine on a committee since you ask pertinent questions and seem willing to work a process
But do give a thought that not all problems can be worked at their source any more than you can solve heat stroke by turning off the sun.
Many aviation related problems are addressed by mitigation of the problem's results.
If we tackle only one part of the problem that is attributable to the engines, then we can either eliminate the engines, the oil, their function that lets out the bad particles or we can provide a positive shield between the engine and the passengers and crew.
Lacking that we can provide more tolerant passengers and crew and the rest can take surface transportation
The challenge one quickly comes to in all this is the technical capability, the cost and lastly is "how much is needed by validation"
Personally I doubt that anything is going to come out of casual internet discussion boards that address this problem. But I can hope that we can at least support a scientific addressing of these issues without all the arm waving