Drag measurements on a laminar-flow body of revolution in the 13-inch magnetic suspension and balance system
Low speed wind tunnel drag force measurements were taken on a laminar flow body of revolution free of support interference. This body was tested at zero incidence in the NASA Langley 13 in. Magnetic Suspension and Balance System (MSBS). The primary objective of these tests was to substantiate the drag force measuring capabilities of the 13 in. MSBS. The drag force calibrations and wind-on repeatability data provide a means of assessing these capabilities. Additional investigations include: (1) the effects of fixing transition; (2) the effects of fins installed in the tail; and (3) surface flow visualization using both liquid crystals and oil flow. Also two simple drag prediction codes were used to assess their usefulness in estimating overall body drag.
Improved Form Factor for Drag Estimation of Fuselages with Various Cross Sections
The paper presents an aerodynamic investigation of 70 different streamlined bodies with fineness ratios ranging from 2 to 10. The bodies are chosen to idealize both unmanned and small manned aircra...
Problems of flow simulation in wind tunnels.
Flow simulation on wind tunnel test models for aerodynamic characteristics of aircraft design, discussing boundary layer and external flow coupling