The bulky night fighter that outmaneuvered the MiG-15

Wars & Conflicts · Published 9 October 2026 Swipe more like this →

In short: Designed around massive, vacuum-tube radar systems, the Douglas F3D Skyknight lacked the sleek lines of its contemporaries. Yet, this "Willie the Whale" became a lethal predator in the skies over Korea, proving that specialized, radar-equipped platforms could dominate the darkness.

The F3D Skyknight was born from a 1945 United States Navy requirement for a carrier-based, jet-powered night fighter. To accommodate the bulky air intercept radar systems of the era, Douglas engineers led by Ed Heinemann designed a wide, deep, and roomy fuselage. This unconventional shape allowed for side-by-side seating for the pilot and radar operator, prioritizing situational awareness over the aerodynamic sleekness typical of daylight fighters.

The aircraft's effectiveness was driven by the Westinghouse AN/APQ-35 fire control system. This complex, vacuum-tube-based system integrated three separate radars: an AN/APS-21 search radar capable of detecting aircraft up to 20 miles away, an AN/APG-26 tracking radar for weapon locks up to 2.25 miles, and an AN/APS-28 tail warning radar effective up to 10 miles. While these systems required intensive maintenance, they provided a decisive edge in night operations.

During the Korean War, the Skyknight achieved several milestones, including the first successful night radar interception of one jet by another on 2 November 1952. Despite its "portly" profile, the F3D was surprisingly agile, capable of outturning the Soviet-built MiG-15. By the end of the conflict, the Skyknight had claimed six enemy aircraft, including four MiG-15s. Furthermore, it functioned as a crucial foundation for contemporary electronic warfare, eventually providing the basis for creating the radar-guided AIM-7 Sparrow missile.

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