This aircraft had an interesting design period, when its prototype was complete it managed to break the speed record with its ability to reach 416mph in level flight, but RLM still favored the Messerschmits Bf-109 and BF-110, even tough the two were slower than the He-100 in its finalized form, eventually the Luftwaffe forced Heinkel to stop production of the aircraft and only 15 aircraft , but The Soviets purchased six prototypes to learn more about evaporative cooling for engines and it was passed on to TsAGI institute to study, the Japanese also purcahsed soem prototypes to study inline engines, even with the experience gained by the Soviets and Japanese the He-100 never saw any combat, but it did show up in several propoganda photos