Agricultural Aviation Began In 1921 When C. R. Neillie Got A Military Plane To Dust Catalpa Trees Near Troy, OH. In 1922 B. R. Coad And C. E. Wollman Began Research At Tallulah, LA To Control Boll Weevils In Cotton. They Developed Equipment Using Venturi Induction, Ram Air Pressure And Hopper Agitation. G. B. Post And Wollman Made The First Commercial Dust Applications In Macon, Ga In 1924. In 1925, 18 Aircraft Treated 60,000 Acres Of Cotton Across The South. In 1928, Delta Air Service Was Organized.
Wind tunnel testing of aircraft models is essential to determine aerodynamic parameters such as lift and drag. The 5-foot Wright Field wind tunnel is an early example of the modern wind tunnel, well known from the early 1920s to the late 1950s for its contributions to research and the development of nearly every major aircraft and associated hardware used by the US Air Force and its predecessor, the Army Air Service.
This research and development complex was established by the founders of Universal Oil Products (later named UOP) to develop key products for the oil-refining industry. The processes created here profoundly affected the refining, treatment and conversion of crude oil and the development of the petroleum and petrochemical industries. Conceived as a combination of quiet academic retreat and industrial plant, Riverside attracted many of the world's leading petroleum scientists and a dedicated support team. Between 1921 and 1955, Riverside research resulted in 8,790 U.S. and foreign patents.