Inlet Channel for a Ducted Fan Propulsion System of a Light Aircraft

E. Ritschl, R. Theiner, D. Hanus
2003 Acta Polytechnica  
So-called "cold-jet" propulsion units consist of a piston engine, a blower and the necessary air duct. Till now, all attempts to utilize "cold-jet" propulsion units to maintain the thrust of an airplane have been unsuccessful. Analysis has shown that the main difficulty is the deformation of the flow field at the entry to the blower [1].
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