Jet planes
Jet planes, propelled by engines based on burning fuel and ejecting exhaust at high speed, were first flown in 1941. They offered more efficiency over rockets by utilizing atmospheric oxygen and became significant post-World War II.
Jet planes, propelled by engines based on burning fuel and ejecting exhaust at high speed, were first flown in 1941. They offered more efficiency over rockets by utilizing atmospheric oxygen and became significant post-World War II.