A compilation of surviving technical data and engineering information onthe aircraft projects that were ongoing in Germany between the years1939 and 1945. A short section of background material is also given atthe beginning of each chapter, to help readers appreciate theenvironment and culture that existed in these research organizations inthose times. The projects were selected for their advanced technologicalcontent and their unorthodox approach to aircraft design. To the readermany of these programs may have a familiar look and that is not toosurprising; since they were to be the inspiration and source ofengineering data, for most aeronautical research work, that was to takeplace in the world throughout the later part of the century.Aeronautical development that took place in the West and also in theEastern bloc had their beginnings in Germany during World War 2. Thistrend was to continue for at least three decades following the end ofhostilities in Europe. Familiar war-birds such as the Sabre Jet and theMIG-15 are direct descendants of projects which started at Messerschmittand Focke Wulf during the war years. Who can deny the resemblance ofthose fighters that emerged in 1950’s to the Ta 153 and the ME P 1101 ofthe 1940’s. The so called groundbreaking supersonic Bell X series ofaircraft flown by legendary test pilot Chuck Yeager in the 1950’s hadtheir beginnings in the high-speed research programs of the Nazi regime(8-346 supersonic research aircraft).