aerohead -
Quote:
Originally Posted by aerohead
In my spare time( what a joke!) I'll go the the SAE website archive and see if maybe Ford presented a paper at that years SAE Congress or Symposium.The auto makers are usually pretty good about doing this sort of thing.We might see an academic paper yet.Good call by your dad.
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Thanks. If nothing else, we will be able to confirm the devilish details of the design. He'll be happy to spend time analyzing the paper when you find it.
(Apologies for going off-topic here ...)
He talked a lot about the effect being akin to a "compressor stall" in jet engines :
Compressor stall - Wikipedia, the free encyclopedia
Quote:
A compressor stall is a situation of abnormal airflow resulting from a stall of the aerofoils within the compressor. Stall is found in dynamic compressors, particularly axial compressors, as used in jet engines and turbochargers for reciprocating engines.
Compressor stalls result in a loss of compressor performance, which can vary in severity from a momentary engine power drop (occurring so quickly it is barely registered on engine instruments) to a complete loss of compression (compressor surge) necessitating a reduction in the fuel flow to the engine.
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(Speculation on my part)
In the above explanation, when the jet engine does not reduce the fuel flow, I think you get this very dangerous "backfire" effect :
Flying :
Idling backward, it looks like fuel is being dumped : [EDIT: Wrong, it's a vortex]
CarloSW2