Smith DeFrance was the engineer behind the design and operation of the Langley Full-Scale Tunnel, the world's largest wind tunnel when it went into operation in 1931.
Smith DeFrance was the engineer behind the design and operation of the Langley Full-Scale Tunnel, the world’s largest wind tunnel when it went into operation in 1931.
The tunnel tested full-sized aircraft for almost seven decades. DeFrance went on to become the first director of the Ames Research Center.
Credit: NASA