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The steady aerodynamic loads on a flat plate with uniform porosity in a uniform background flow are determined in closed form by an extension of classical thin airfoil theory. The porous boundary condition on the airfoil surface assumes a linear Darcy law relationship, which furnishes a Fredholm integral equation for the bound vorticity distribution over the airfoil. The solution to this singular integral equation yields a single dimesionless group that determines when porosity effects are important.

To reduce the high vertical accelerations of the high speed boats, a "suspension boat" concept was developed and patented by Grenestedt [1,2]. A 1:6 subscale version of a two-seat high-speed manned suspension boat was manufactured and tested. The manufacturing of the hull, the sponsons, and the suspension components is described, followed by an outline of the driveline and controls. In general, the boat performed very well in water tests and the only major problem of the boat was its turning performance. Further work has been initiated to improve this.

This report concerns the design and component fabrication of a closed jet water tunnel which is being assembled in the Department of Mechanical Engineering at Lehigh University. It also discusses performance of plane-walled, two-dimensional diffusers and conical diffusers as an introduction to some experimental work with diffusers for which the water tunnel will be used.

This thesis pertains to an experimental investigation of the effect on a turbulent radial wall jet when the surface on which the jet impinges is a concave surface of revolution.

Design of an electric light plant, for the board-walk and pavilions at Asbury Park, N.J.