Battles & Wars › Between the wars › World War II
Jet engine and the jet fighter (Me 262)
engines run 1937; first jet flight 1939; Me 262 in combat 1944· Invention or discovery· Weapons, armor & warships
Well documentedSolid records, physical evidence or scientific consensus.
Engines that drive a plane forward by blasting out hot gas, invented separately in Britain and Germany, gave fighters far greater speed.
See it on the Battles & Wars map →What happened
A jet engine sucks in air, compresses it, burns fuel in it and blasts the hot gas out the back; a turbine spun by the exhaust drives the compressor. Frank Whittle in Britain and Hans von Ohain in Germany, working independently, both ran engines in 1937. Ohain's engine powered the Heinkel He 178 on the first jet flight, August 27, 1939. Britain's Gloster Meteor and Germany's Me 262 both entered service in 1944; the Me 262 was over 150 km/h faster than Allied piston fighters.
Why it matters
Within a decade jets made piston fighters obsolete, and the same engines later powered airliners and modern air travel.
Think of it like
Like letting go of a blown-up balloon, with a fan that keeps refilling it.
How we know
Whittle's 1930 patent and Ohain's 1936 patent, flight records of the He 178 and Meteor, and surviving engines and aircraft; Britain's first jet, the Gloster E.28/39, hangs in London's Science Museum.
Still debated
Historians debate whether Britain could have had jets years earlier if officials had backed Whittle's 1930 patent sooner.
Connections (4)
▸Fighter aircraft was transformed by the Jet engine and the jet fighter (Me 262)Well documented
The connection
From 1915 fighters were propeller planes, and by 1945 the best piston fighters were near their practical speed limit, around 700 km/h. Jet engines broke through it. The Me 262 and Gloster Meteor of 1944 began the change, and by the early 1950s almost all new front-line fighters, such as the MiG-15 and F-86 Sabre, were jets.
When and how
Germany and Britain, 1944; then worldwide, 1945–1955, as air forces replaced their piston fighters.
How we know
Aircraft performance data and air force procurement records show the rapid switch after 1945.
Debates and open questions
How much early postwar jet fighters owed to captured German research, such as swept wings, versus the engine itself is still discussed.
▸Jet engine and the jet fighter (Me 262) arrived too late to change World War IIMostly agreed
The connection
Germany's Me 262 entered combat in mid-1944 and outran every Allied fighter, but relatively few ever flew in combat. Fuel shortages, engines that lasted only about 10–25 hours, Allied bombing and a lack of trained pilots held them back, and Allied fighters caught them taking off and landing. Britain's Meteor mostly chased V-1 flying bombs.
When and how
Skies over Germany, July 1944 – May 1945; Luftwaffe jet units such as Jagdgeschwader 7, and RAF Meteor squadrons from July 1944.
How sure are we?
Combat records on both sides show limited Me 262 numbers and modest results; postwar Allied surveys examined German jet production.
Debates and open questions
Whether earlier mass production of the Me 262 could have stopped the Allied bombing campaign is a classic 'what if'; most historians doubt it.
▸Jet engine and the jet fighter (Me 262) powered the first jet-versus-jet battles of the Korean WarWell documented
The connection
Korea saw the first large-scale battles between jet fighters. Soviet-built MiG-15s, with engines copied from Rolls-Royce Nenes that Britain sold to the USSR in 1947, appeared in November 1950. US F-86 Sabres arrived in December, and the two fought over northwest Korea in an area pilots called 'MiG Alley'.
When and how
Northwest North Korea along the Yalu River, November 1950 – July 1953; US, Chinese, North Korean and secretly Soviet pilots.
How we know
US Air Force records, Soviet archives opened in the 1990s that confirmed Soviet pilots flew the MiGs, and pilots' memoirs.
Debates and open questions
Kill ratios are disputed: the US once claimed about 10 to 1 for the Sabre; later studies suggest nearer 2 to 1 or less.
▸Messerschmitt (Bf 109, Me 262) fielded the first combat jet fighter using the Jet engine and the jet fighter (Me 262)Well documented
The connection
Messerschmitt began the Me 262 design in 1939 and first flew it on jet power alone in July 1942. Production was slowed by unreliable Junkers Jumo 004 engines, shortages of heat-resistant metals, Allied bombing and Hitler's insistence that it also serve as a bomber. It entered combat in 1944, the first jet fighter to do so.
When and how
Augsburg, Bavaria, 1939–42; production in dispersed forest and underground sites, 1944–45, using forced labor.
How we know
Flight-test logs, Luftwaffe production records, and surviving Me 262s in museums such as the Deutsches Museum and the Smithsonian.
Debates and open questions
How many prisoners died building Me 262s in the hidden forest and tunnel plants, such as Bergkristall near the Gusen camp in Austria, is known only roughly.