Before revision: Description The blind approach navigation system was developed starting in 1932 by Dr. Ernst Kramar of the Lorenz URL It was adopted by Deutsche Lufthansa in 1934 and sold around the world.Louis Brown, A Radar History of World War II: Technical and Military Imperatives, CRC Press, 1999, p. 113 The Lorenz company was founded in 1880 by Carl Lorenz and is now part of ITT.
After revision: Description The blind approach navigation system was developed starting in 1932 by Dr. Ernst Kramar of the Lorenz company.History of radio flight navigation systems It was adopted by Deutsche Lufthansa in 1934 and sold around the world.Louis Brown, A Radar History of World War II: Technical and Military Imperatives, CRC Press, 1999, p. 113 The Lorenz company was founded in 1880 by Carl Lorenz and is now part of ITT.