THEORETICAL INVESTIGATION OF DUCTED PROPELLER AERODYNAMICS, VOLUME 3
- 1 September 1961
- report
- Published by Defense Technical Information Center (DTIC)
Abstract
Problems of the ducted fan and its application in VTOL aircraft are investigated. General considerations are presented for the design of vertical take-off aircraft. The ideal loading of single rotation propellers in a circular duct is examined. The flow field was derived for a non-uniform sink distribution in a circular disk and for a cylindrical non-uniform vortex sheet. The velocity field and forces on a flat plate due to a cylindrical jet with an elliptical cross-section were also derived. Experimental data are given in tabular and graphic form on the interference effect of a jet on the VTOL aircraft. Design requirements of deflection vanes are discussed with the results of an experimental investigation on a cascade of circular arc sections.Keywords
This publication has 0 references indexed in Scilit: