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#20
October 28th 03, 02:21 AM
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Russell Kent wrote:
...if the velocity of the air in the duct is not a significant fraction (like 70%) of the free airstream velocity, then the duct "looks" like a wart on the fuselage, and the free airstream flows around it. Interesting. Intuitively that makes sense, since there's not a lot of ram-air pressure into the inlet. Still, even axial-flow compressors *can* generate significant back pressure and inlet spillage, especially at 'high' speed and low power settings. I wonder what the stall margin is like on a NACA-inlet-fed jet. Dave 'surge' Hyde Inspection Sunday! 
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