Type of Object Drag Coefficient
Old Car like a T-ford 0,7 - 0,9
Modern Car like Toyota Prius 0,26
Common Car like Open Vectra (class C)
Passenger Train 1.8
Bike Upright Commuter 1.1
Bike racing 0.88
Tractor Trailed Truck 0.96
Dolphin 0.0036 A dolphin shapped car?
Solid Hemisphere 0.42
Thin Disk 1.1
Streamline body 0.04
Squared flat plate at 90 deg 1.17
Long flat plate at 90 deg 1.98
Wires and cables 1.0
Laminar flat plate (Re=106) 0.001
Turbulent flat plate (Re=106) 0.005
Subsonic Transport Aircraft 0.012
Supersonic Fighter, M=2.5 0.016
Person (upright position) 1.0
Ski jumper 1.2
VW Beetle .38 for the hatchback
Mini Cooper and Volvo C30 .35 and .31
The four-seats had an unusual arrangement in that the rear two seats face backwards.
Koneen suunnittelussa oli mukana Len Niemi joka suunnitteli Sisu 1A purjekoneen USAssa.
On the other hand, Len Niemi of Greenville, SC, who designed the Sisu sailplane, his Sprinter and was involved with the design of the AJ-2 and other airplanes, was an active participant
in the design of the White Lightning. Len did all the performance analyses and checked my structural analysis by different methods. He has been very, very helpful on the whole thing, including coming down to Sheldon (near Beaufort, SC) to help us build the molds.