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Lent by Ames Research Center
This cross section is from the Forty by Eighty Foot Full-Scale Wind
Tunnel fan blade which shows the airfoil shape of the blade. These
blades are made of spruce wood laminated together then hand shaped to
give the desired airfoil shapes or contours. The process to construct
these blades has not really changed in over seventy years. The wood
laminates are oriented to obtain strength and to sustain the loads
experienced moving the air around the wind tunnel at speeds in excess of
300 miles per hour.
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