[DeTomaso] Kurt Busch Pantera

[MikeLDrew at aol.com]

In a message dated 11/18/17 14 52 19, pantera at vtc.net writes:


> 
> /The simple answer is that as speed increases, the sealed air box
> becomes a ram air system. The only place for the air to go is into the
> engine. I never bothered to test the design above 100 mph, but I never
> saw an inlet air temperature increase at any speed.//The only time the
> engine inlet air temperature went up is when the ambient temperature
> increased./
> 

>>>I think the question was raised because over the years, loads of 
armchair aerodynamicists, armed with facts/experience/knowledge/BS in varying 
degrees, have postulated that as the speed increases, the laminar boundary layer 
seperates from the skin of the car (and thus the scoops), leaving a 
turbulent boundary layer behind.   It is a well-known "fact" that air scoops that 
don't stick out very far have zero effect because they are in 'dead air' with 
no actual flow, and you need the giant Hall 'elephant ear' scoops in order 
to accomplish anything at triple-digit speeds.

I neither subscribe to this theory nor refute it--I freely admit I lack the 
requisite facts/experience/knowledge to weigh in on the argument, other 
than to clarify the argument itself....

Mike
-------------- next part --------------
   In a message dated 11/18/17 14 52 19, pantera at vtc.net writes:

     /The simple answer is that as speed increases, the sealed air box
     becomes a ram air system. The only place for the air to go is into
     the
     engine. I never bothered to test the design above 100 mph, but I
     never
     saw an inlet air temperature increase at any speed.//The only time
     the
     engine inlet air temperature went up is when the ambient temperature
     increased./

   >>>I think the question was raised because over the years, loads of
   armchair aerodynamicists, armed with facts/experience/knowledge/BS in
   varying degrees, have postulated that as the speed increases, the
   laminar boundary layer seperates from the skin of the car (and thus the
   scoops), leaving a turbulent boundary layer behind.  It is a well-known
   "fact" that air scoops that don't stick out very far have zero effect
   because they are in 'dead air' with no actual flow, and you need the
   giant Hall 'elephant ear' scoops in order to accomplish anything at
   triple-digit speeds.
   I neither subscribe to this theory nor refute it--I freely admit I lack
   the requisite facts/experience/knowledge to weigh in on the argument,
   other than to clarify the argument itself....
   Mike