Roots-Type Supercharger System (Soucek)
This supercharger system was installed in the Wright Apache XF3W-1, Bureau No. 7223 flown by Apollo Soucek on record altitude flights over Washington, D.C. It included a N.A.C.A. Model 2E Roots-type blower case built by the Allison Engineering Company for the U.S. Navy Bureau of Aeronautics. This is one component of the supercharging system that included an air intake duct (or scoop), intercooler, driveshaft, blower, and exhaust. This system was connected to a Pratt & Whitney Wasp R-1340B engine that powered the XF3W-1 aircraft, and it made possible the high-altitude records achieved.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.
United States of America
PROPULSION-Accessories (to an Engine)
Allison Division, General Motors Corporation
Duct with bypass from Apollo Soucek's Wright Apache used in high-altitude record flight.
3-D (Overall): 24.4 × 24.8 × 35.6cm, 4.3kg (9 5/8 in. × 9 3/4 in. × 1 ft. 2 in., 9.4lb.)
Ferrous Alloy
Non-Magnetic MetalPaint
Copper Alloy
Unknown Coating
A19350010003
Transferred from the Navy Department, Bureau of Aeronautics
National Air and Space Museum
Usage conditions apply
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