发明名称 Air or submarine engine with improved contour
摘要 A reduced-drag, axially symmetrical missile or submarine hull with rounded, tapered bow and stern portions, and a rounded central portion tapered, for drag minimization, along a curve defined by a Fredholm equation of the second kind framed so that the pressure coefficient remains constant at all points on the central portion. The missile is designed to travel within a fluid so that its drag coefficient is decreased, boundary layer detachment is avoided, and cavitation and instability phenomena are eliminated. The constant pressure coefficient is reached by following as a profile the natural track lines of the front portion which are joined to the rear portion.
申请公布号 US5024396(A) 申请公布日期 1991.06.18
申请号 US19900489746 申请日期 1990.02.26
申请人 PRINCIPIA RECHERCHE DEVELOPPEMENT SA 发明人 GUEVEL, PIERRE M.;BARDEY, PHILIPPE R.
分类号 B63B3/13;B64C3/14;F15D1/10;F42B10/44 主分类号 B63B3/13
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