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100 Military Jet Engine Acquisition sign work on an axial-flow jet aero engine. Rolls also soon became involved in advanced development of the Whittle engine concepts. The British government’s effort to develop an aircraft jet engine in- creased substantially after the fall of France in May 1940. By early 1941, Tizard launched an additional program by giving Whittle’s and Griffith’s research results to de Havilland aircraft, which then was di- rected to develop its own jet engine and aircraft (the de Havilland Goblin and de Havilland Vampire, respectively). Thus, by 1941, the British government was supporting the development of three mili- tary jet engines and two jet fighters. As impressive as the British program had become, Germany was al- ready far ahead of the UK. The German effort, like the British one, had been initiated by individual entrepreneurs. The first key players were a graduate student in physics at the University of Göttingen, Hans von Ohain, and a chief garage mechanic, Max Hahn. In 1934, von Ohain began design on an axial-flow turbojet engine prototype. He and Hahn built a test article with their own money, but it did not prove to be successful. Von Ohain then approached Ernst Heinkel, a developer of high-performance military aircraft, who became inter- ested in the project. Heinkel hired Von Ohain and Hahn, and began funding their efforts with his company money. By 1939, Von Ohain and other Heinkel engineers had successfully bench tested a usable engine. Heinkel then authorized development of an experimental aircraft for the engine, later called the Heinkel He 178, using com- pany funds. In late August of that year, five days before Hitler in- vaded Poland, the aircraft made its first successful flight. Although much development work remained, the first jet fighter prototype had now flown, funded entirely by private and corporate money. Around this same time, the German aircraft company Junkers was also at- tempting to develop an even more advanced turbojet with its com- pany money, but it was lagging behind Heinkel in the development effort. Whittle had only just demonstrated his centrifugal-flow engine to the RAF director of scientific research, and he was just beginning to receive funding to develop a flight-capable jet engine. In mid-1939, the German Aviation Ministry (or Reichsluftfahrt- Ministerium [RLM]) was supporting a few other jet engine and rocket programs on a small scale, which were based on different technolo- gies. By late in the year, Heinkel and Junkers had both been able toPDF Image | Military Jet Engine Acquisition Technology Basics and Cost-Estimating Methodology
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