ORIGINAL: freakingfast
Yes a vacuum cleaner (axial/centrifugal impeller) follows a different set of rules, but it got my point across to MJD...I think anyway. I have momentarily stalled ducted fans with my hands blocking intakes or outlets on both IC and electric, they too speed up.
Yeah it did, when you mentioned that I said "oh yeah.." to myself. I was unsure of what was going on because I started thinking about the drag increase when stalling a wing, but wasn't worried enough about the nitty gritty to query it further. I decided to settle for an analogy and move on.. eager to get back to the bench.
MJD