From: Bob_Crownfield <Bob_crownfield@qc.edu> Organization: City University of New York/University Computer Center Date: 20 Dec 95 15:52:07 Followups: 1 2
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When I watch a 727, the engines are small diameter, and very noisy. A DC-10 has larger engines which are apparently more powerfull, and less noisy. Last manual I saw said EPR maxed at about 2.2 if I remember that far back. Is there a relation between diameter, EPR,thrust, and noise? I assume (Yes,I know about ass u me!) that EPR and exhaust velocity are directly related to noise. How does bypass relate, if at all? It seems that thrust and noise can vary very widely from engine type to engine type. Why is the 737 engine narrow and long, while the DC-10 engine is much wider, and relatively shorter? Why... No, I will stop here!