The J65 turbojet engine is a type of jet engine developed in the 1950s, primarily used in military aircraft. It operates on the principle of air intake, compression, combustion, and exhaust, producing thrust to propel the aircraft forward. The engine is known for its reliability and performance in various flight conditions. This engine was widely used in several aircraft, including the McDonnell F-4 Phantom II and the Lockheed T-33. Its design features a single-spool configuration, which simplifies maintenance and enhances efficiency. The J65 played a significant role in advancing jet propulsion technology during its time.