Fuselage and Nacelle Effects on Airplanes as Determined by a Statistical Study of Data from the GALCIT 10-Foot Tunnel

Author: Williams, Edgar Purell

Year: 1942

Degree: Engineer's thesis

Advisor: Millikan, Clark Blanchard

Committee Members: Millikan, Clark Blanchard; Klein, Arthur Louis; Stewart, Homer Joseph; Marquardt, R. E.

Option: Aeronautics

DOI: 10.7907/WY13-WD59

Abstract

NOTE: Text or symbols not renderable in plain ASCII are indicated by [...]. Abstract is included in .pdf document.

An attempt to base fuselage drag upon wetted area showed no less scatter than [...] as a function of fineness ratio. For average values of [...] for fuselages and flying boat hulls see Figure 12.

The destabilizing effect of fuselages and flying boat hulls based on the volume of a circumscribed cylinder is given in figure 22 as a function of the c.g. position. The fuselage body appears to act somewhat analogous to an airfoil with an aerodynamic center at a point somewhere between the 0.2 and 0.3 body position.

The effect of fuselages and flying boat hulls on [...] is given by figures 23 through 29. One set of figures gives [...] as a function of the destabilizing effect and the other set as a function of the c.g. position.

No successful means of correlating nacelle data was found. Figures 30 through 33 show the magnitude of nacelle drag and moment effects.

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