Question: What ethnicity was the designer of the Heinkel HeS 3?
Context: The Heinkel HeS 011 or Heinkel-Hirth 109-011 "(HeS - Heinkel Strahltriebwerke)" was an advanced World War II jet engine built by Heinkel-Hirth.  It featured a unique compressor arrangement, starting with a low-compression impeller in the intake, followed by a "diagonal" stage similar to a centrifugal compressor, and then a three-stage axial compressor.  Many of the German jet-powered aircraft designs at the end of the war were designed to use the HeS 011, but the HeS 011 engine was not ready for production before the war ended in Europe and only small numbers of prototypes were produced. This list includes the historic houses, castles, abbeys, museums and other buildings and monuments in the care of Historic Environment Scotland (HES).  HES (Scottish Gaelic: "Àrainneachd Eachdraidheil Alba" ) is a non-departmental public body of the Scottish Government, responsible for investigating, caring for and promoting Scotland’s historic environment.  It maintains over 300 properties, that together attract more than 3 million visitors annually. The Heinkel HeS 1 "(HeS - Heinkel Strahltriebwerke)" was Germany's first jet engine, which was a stationary test item that ran on hydrogen. Hans Joachim Pabst von Ohain (14 December 191113 March 1998) was a German physicist, the designer of the first "operational" jet engine.  His first design ran in March 1937, and it was one of his engines that powered the world's first flyable all-jet aircraft, the prototype of the Heinkel He 178 (He 178 V1) in late August 1939.  In spite of these early successes, other German designs quickly eclipsed Ohain's, and none of his engine designs entered widespread production or operational use. The Heinkel HeS 40 "(HeS - Heinkel Strahltriebwerke)" was an experimental constant-volume jet engine designed by Adoph Müller's team at Heinkel starting some time in 1940 or 41.  It was based on the mechanical layout of the HeS 30, but replaced the conventional flame cans with oversized ones including large poppet valves that sealed off the chambers during firing.  Constant-volume combustion, similar to the Otto cycle used in most piston engines, is considerably more fuel efficient than the constant-pressure combustion used in a typical jet engine. The HeS 30 "(HeS - Heinkel Strahltriebwerke)" was an early jet engine, originally designed by Adolf Müller at Junkers, but eventually built and tested at Heinkel.  It was possibly the best of the "Class I" engines, a class that included the more famous BMW 003 and Junkers Jumo 004, but work on the design was stopped by the "Reichluftfahrtministerium" (RLM) as they felt the Heinkel team should put all their efforts into other designs. Dr. Ernst Heinkel (January 24, 1888 – January 30, 1958) was a German aircraft designer, manufacturer, Wehrwirtschaftsführer in the Third Reich, and member of the Nazi party.  His company Heinkel Flugzeugwerke produced the Heinkel He 178, the world's first turbojet aircraft and jet plane, and the Heinkel He 176, the first rocket aircraft.  He was awarded the German National Prize for Art and Science in 1938. The Focke-Wulf Project I was a design study for a jet fighter, to be built in Germany during World War II.  In 1942, the "Reichsluftministerium" (RLM) asked Professor Kurt Tank of the Focke-Wulf factory to investigate the possibility of a single-engine jet fighter.  He was given the development plans of the BMW 003, Jumo 004 and Heinkel HeS 011 engines.  Late in 1942 the Project Office, led by Ludwig Mittelhuber, began to work on a series of fighter projects, to be powered by one of these new turbojet units. The Heinkel HeS 8 (prefix being an abbreviation for "Heinkel Strahltriebwerke"-Heinkel jet engine) was an early jet engine designed by Hans von Ohain while working at Heinkel.  It was the first jet engine to be financially supported by the RLM, bearing the official name 109-001.  Had development continued it would have been known as the Heinkel 001, but it does not appear this was used in practice. The Heinkel HeS 3 "(HeS - Heinkel Strahltriebwerke)" was the world's first operational jet engine to power an aircraft.  Designed by Hans von Ohain while working at Heinkel, the engine first flew as the primary power of the Heinkel He 178, piloted by Erich Warsitz on 27 August 1939.  Although successful, the engine had too little thrust to be really useful, and work started on the more powerful Heinkel HeS 8 as their first production design.
Answer: German