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Drag Reduction Technologies

Drag reduction is vital to achieving speed and fuel efficiency. The CAFE 400 races of the 1980's inspired many innovations in drag reduction that are covered in the CAFE 400 reports under "Research & Publications" on this website. There are a great number of resources on this topic and we here present some of our favorites. The designer must attend to issues of laminar flow, cooling drag, interference drag, leakage drag, induced drag, wetted area and parasite drag. As more papers on this topic become available to us, we shall post them.

Drag Reduction
   
# Title Author Year Description Size
1 Fluid Mechanics, Drag Reduction and Advanced Configuration Aeronautics Dennis M. Bushnell 2000 Open thermodynamics and their potential to greatly reduce drag. Great bibliography includes exciting AIAA papers by Goldschmied on negative drag. 292KB
2 Aerodynamic Design of Low-Speed Aircraft With a NASA Fuselage/Wake Propeller Configuration F. R. Goldschmied, Monroeville, PA 1986 NASA Wind Tunnel study of fuselage body wake regeneration as a means to substantially reduce power required. 967KB
3 Fuselage Self-Propulsion by Static-Pressure Thrust: Wind-Tunnel Verification F. R. Goldschmied, Monroeville, PA 1987 Body self -propulsion by static-pressure thrust verified in the wind-tunnel to show self-propelled axi-symmetric bodies with slot suction BLC and stern jet discharge, promising a 50% power reduction at 200 mph. 1.1MB
4 Thick-Wing Spanloader All-Freighter: Design Concept for Tomorrow’s Air Cargo F. Goldschmied, Engineering and Research Aerodynamics/Hydrodynamic Systems, Monroeville, PA 1990 A design for an ultra-low drag flying wing using Goldschmeid propulsion. 588KB
5 On the Aerodynamic Optimization of Mini-RPV and Small GA Aircraft F. R. Goldschmied, Monroeville, PA 1984 Explores boundary layer control on an axi-symmetric fuselage to reduce power required to just 60 BHP at 200 mph. 767KB

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