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Palmdale

(Encyclopedia)Palmdale, city (1990 pop. 68,842), Los Angeles co., S Calif., in the irrigated Antelope Valley; a growing residential suburb of Los Angeles near Little Rock Creek where it forms Lake Palmdale Reservoi...

Chesapeake & Ohio Railway

(Encyclopedia)Chesapeake & Ohio Railway (C&O), former U.S. transportation company with railroad lines in eight states, Washington, D.C., and Ontario, Canada. Founded as the Louisa RR Company in Virginia in ...

Halsey, William Frederick, Jr.

(Encyclopedia)Halsey, William Frederick, Jr. (Bull Halsey) hôlˈsē [key], 1882–1959, American admiral, b. Elizabeth, N.J., grad. Annapolis, 1904. In World War II he led (Jan., 1942) a spectacular carrier raid a...

Aquarius

(Encyclopedia)Aquarius əkwârˈēəs [key] [Lat.,=water carrier], large constellation located on the ecliptic (the sun's apparent path through the heavens) between Capricornus and Pisces; it is one of the constell...

aviation medicine

(Encyclopedia)aviation medicine, scientific study of the biological effects of aviation, especially on human beings. Although aviation medicine is concerned with such problems as the spread of diseases by persons t...

Sikorsky, Igor Ivanovich

(Encyclopedia)Sikorsky, Igor Ivanovich sĭkôrˈskē [key], 1889–1972, American aeronautical engineer, b. Kiev, Russia. He immigrated to the United States in 1919 and was naturalized in 1928. Sikorsky built and f...

Chadderton

(Encyclopedia)Chadderton, town, Oldham metropolitan district, NW England, in the Greater Manchester metropolitan area. Cottons and electrical and aircraft equipment a...

Midway

(Encyclopedia)Midway, island group (2 sq mi/5.2 sq km), central Pacific, c.1,150 mi (1,850 km) NW of Honolulu, comprising Sand and Eastern islands with the surrounding atoll. Discovered by Americans in 1859, Midway...

convertiplane

(Encyclopedia)convertiplane: see vertical takeoff and landing aircraft. ...

wind tunnel

(Encyclopedia)wind tunnel, apparatus for studying the interaction between a solid body and an airstream. A wind tunnel simulates the conditions of an aircraft in flight by causing a high-speed stream of air to flow...