The Heinkel He 280 was a sleek, twin-engine auto-gyro aircraft developed by the German Heinkel aircraft company in the 1930s. It was one of the first monoplane fighters with an all-metal construction and was the worlds first jet fighter-style aircraft to be constructed in series production. It was noteworthy for a number of innovative features that distinguished it from other aircraft of its era, and set a precedent for many of the jet aircraft of the following decades. The He 280 featured a cantilever monoplane wing design and was powered by two Jumo 004B engines, which were the first operational jet engines that were produced in mass quantities. It had a retractable tricycle landing gear and featured an airfoil-shaped vertical stabilizer of a very thin profile. The He 280 had a mixed-control cockpit, with a rear-facing seat located in the tail. The cockpit was controversially situated above the engines, which provided a great view but exposed the crew to significant amounts of noise and vibration. The He 280 was the first aircraft to employ dive brakes and a leading-edge-slat system on the wings. The aircraft also came equipped with automatic roll-control and dive-recovery systems that caught the attention of the Allied forces of the time. Additionally, it featured an adjustable tailplane trim tab, a low-pressure cabin for improved comfort, and a soundproof cabin. The aircrafts armament consisted of two 20mm MG FF cannons and two MG 17 machine guns. It could also carry a variety of bombs and rocket projectiles. Although the aircrafts top speed was limited to around 545 kilometres per hour (340 miles per hour), its excellent rate of climb, maneuverability and range enabled it to reach an impressive operational ceiling of 10,000 metres (33,000 feet). The He 280 was the only fighter aircraft to see sustained series production in Germany during World War II, but was eventually replaced by the Fw 190 and Bf 109. Despite this, it still stands as a technological landmark that set the stage for the jet fighters that followed.
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