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instrument-landing system

(Encyclopedia)CE5 Instrument-landing system (ILS), the most common instrument-landing approach system, uses two beams to guide an airplane. instrument-landing system (ILS), ground-based radio system designed to...

streamline

(Encyclopedia)streamline, path of a fluid flowing steadily and without appreciable turbulence. A body is said to be streamlined if its shape offers the least possible resistance to a current of air, water, or other...

aviation

(Encyclopedia)aviation, operation of heavier-than-air aircraft and related activities. Aviation can be conveniently divided into military aviation, air transport, and general aviation. Military aviation includes al...

Clemente, Roberto Walker

(Encyclopedia)Clemente, Roberto Walker rəbĕrˈtō, kləmĕnˈtē Span. rōbĕrˈtō klāmĕnˈtā [key], 1934–72, Puerto Rican baseball player, b. Carolina, Puerto Rico. He played his entire major league career...

McDonnell, James Smith

(Encyclopedia)McDonnell, James Smith, 1899–1980, American aviation pioneer, b. Denver, B.S. Princeton, 1921, M.S. Massachusetts Institute of Technology, 1925. He designed the Doodlebug (1929), a small monoplane, ...

Hewitt, Peter Cooper

(Encyclopedia)Hewitt, Peter Cooper hyo͞oˈĭt [key], 1861–1921, American scientist and inventor, b. New York City; son of Abram S. Hewitt and grandson of Peter Cooper. He invented a mercury-vapor lamp and a merc...

Tempelhof

(Encyclopedia)Tempelhof tĕmˈpəlhôf [key], district of Berlin, Germany. A workers' residential quarter and a film-production center, it became part of the U.S. occupation sector after 1945. The district includes...

Argenteuil

(Encyclopedia)Argenteuil ärzhäNtöˈyə [key], city, Val-d'Oise dept., N France, on the Seine, a suburb of Paris. It has important metalworks and factories making furniture, railroad ...

Rogers, James Harvey

(Encyclopedia)Rogers, James Harvey, 1886–1939, American economist, b. South Carolina, grad. Univ. of South Carolina (B.A., 1906) and Yale (B.A., 1909; Ph.D., 1916). He was professor of economics at the Univ. of M...

Point Barrow

(Encyclopedia)Point Barrow, northernmost point of Alaska, on the Arctic Ocean, at lat. 71°23′N and long. 156°30′W. Visited in 1826 by Frederick W. Beechey, a British explorer, and named by him for the British...