The J75 Engine is a type of jet engine developed by Pratt & Whitney in the 1950s. It is a turbojet engine known for its high thrust output, making it suitable for military aircraft. The J75 was primarily used in fighter jets and bombers, contributing to advancements in aviation technology during its time. This engine features a two-spool design, which enhances its efficiency and performance at various speeds. The J75 was notable for its use in aircraft like the McDonnell Douglas F-4 Phantom II, showcasing its capabilities in both air-to-air and air-to-ground combat scenarios.