Updated August 29, 2016. Dr. Hans von Ohain and Sir Frank Whittle are both recognized as being the co-inventors of the jet engine. However, each worked separately and knew nothing of the other's work.
https://www.thoughtco.com/history-of-the-jet-engine-4067905
Hans von Ohain is considered the designer of the first operational turbojet engine while Frank Whittle was the first to register a patent for the turbojet engine in 1930. Though Hans von Ohain was granted a patent for his turbojet engine in 1936, it was Ohain's jet that was the first to fly in 1939. It was't until 1941 that Whittle's jet first flew. Sir Frank Whittle was an English aviation engineer and pilot.
https://www.thoughtco.com/history-of-the-jet-engine-4067905
This led to the invention of jets, which are used by both the military and commercial airlines. A jet is an airplane propelled by jet engines. Jets fly much faster than propeller-powered aircraft and at higher altitudes, some as high as 10,000 to 15,000 meters (about 33,000 to 49,000 feet). Two engineers, Frank Whittle of the United Kingdom and Hans von Ohain of Germany, are credited with the development of the jet engine during the late 1930s.
https://www.thoughtco.com/airplanes-flight-history-1991789
Quick Answer. The jet plane that first took flight on July 27, 1949, was invented by Sir Geoffrey de Havilland. The inventor was an aircraft designer and aviation pioneer.
https://www.reference.com/history/invented-jet-plane-82e1554cf92565e5
Dr. Hans von Ohain and Sir Frank Whittle are both recognized as being the co-inventors of the jet engine. Each worked separately and knew nothing of the other's work. Hans von Ohain is considered the designer of the first operational turbojet engine. Frank Whittle was the first to register a patent for the turbojet engine in 1930. Hans von Ohain was granted a patent for his turbojet engine in 1936. However, Hans von Ohain's jet was the first to fly in 1939.
http://www.answers.com/Q/When_was_the_jet_engine_invented
The first jet passenger aircraft used for commercial flights was the De Havilland Comet, a British craft first used in 1949. Other types of jet engines were also introduced. The “turboprop” engine, invented around 1938 and first used in 1950, was used to drive a conventional propeller. A jet engine used this way is ideally suited for helicopters and slower aircraft such as cargo transports. In addition to aviation, other uses for the jet engine were soon found.
http://ethw.org/Jet_Engine
Main article: History of the jet engine. See also: Timeline of jet power. Jet engines date back to the invention of the aeolipile before the first century AD. This device directed steam power through two nozzles to cause a sphere to spin rapidly on its axis.
https://www.quora.com/How-was-the-jet-engine-invented
A Pratt & Whitney F100 turbofan engine for the F-15 Eagle being tested in the hush house at Florida Air National Guard base. The tunnel behind the engine muffles noise and allows exhaust to escape. A jet engine is a reaction engine discharging a fast-moving jet that generates thrust by jet propulsion. This broad definition includes airbreathing jet engines (turbojets, turbofans, ramjets, and pulse jets) and non-airbreathing jet engines (such as rocket engines). In general, jet engines are combustion engines.
https://en.wikipedia.org/wiki/Jet_engine
In the 1940s the Nazi German aviation engineers developed the first working Jet engines and planes. There were a few that flew in combat. Many of the jets they produced sat and were never used because the war ended. The US, Brits and Russians grabbed the technology and the planes.
http://www.answers.com/Q/When_were_jet_engines_invented
Orville and Wilbur Wright were the inventors of the first airplane. On December 17, 1903, the Wright brothers launched the era of human flight when they successfully tested a flying vehicle that took off by its own power, flew naturally at even speed and descended without damage.
https://www.thoughtco.com/airplanes-flight-history-1991789
when were jet engines invented
Jet engines was invented in 1930. The jet engine was invented in 1930. Jet engines were invented in 1930.