Early Life
Walter began training as a machinist in 1917 in Hamburg and in 1921 commenced studies in mechanical engineering at the Hamburg Technical Institute. He left before completing these studies, however, in order to take up a position at the Stettiner Maschinenbau AG Vulcan, a major shipyard. Walter’s experience with marine engines here led him to become interested in overcoming some of the limitations of the internal combustion engine. He reasoned that an engine powered by a fuel source already rich with oxygen would not require an external supply of oxygen (from the atmosphere or from tanks). This would have obvious advantages for powering submarines and torpedoes.
Research suggested that hydrogen peroxide was a suitable fuel – in the presence of a suitable catalyst it would break down into oxygen and steam at high temperature. The heat of the reaction would cause the oxygen and steam to expand, and this could be used as a source of pressure. Walter also realised that another fuel could be injected into this hot mixture of gases to provide combustion and therefore more power. He patented this idea in 1925.
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