Are these parts from one set, lots of related sets or just a big messy jumble?
They are definitely not from a single set, as the 16x16 yellow plate was only ever sold in Friends sets, that do not contain any Technic track pieces.

Another telltale sign is the transparent orange Brick with Shaft 1x8x1, whose only occurrence is in a few Star Wars podracer and Alpha Team sets from 1999-2001, none of which has any propeller pieces.

The first picture contains a black turbine insert with many blades, this was sold in many unrelated sets across the years.