Answer:
Heinkel He 178
Step-by-step explanation:
The first German jet aircraft, which predates the Messerschmitt Me-262, was the Heinkel He 178. It was developed by Ernst Heinkel Flugzeugwerke and made its first flight on August 27, 1939.
The He 178 was a proof-of-concept aircraft rather than a fully operational fighter or bomber. It was powered by a Heinkel HeS 3b turbojet engine and had a top speed of around 700 km/h (435 mph). The aircraft's successful maiden flight demonstrated the viability of jet propulsion for military aircraft.
While the He 178 was a significant milestone in the development of jet aviation, it did not have a major impact on World War II. The Heinkel He 178 was primarily an experimental aircraft, and it was the later Me-262 that entered operational service and became the world's first operational jet-powered fighter aircraft.