The Lockheed EC-121 Warning Star is an American airborne early warning and control radar surveillance aircraft operational in the 1950s in both the United States Navy (USN) and United States Air Force (USAF).

The EC-121, originally designated RC-121, was a radar-picket version of the U.S. Air Force's C-121 passenger airplane. The EC-121 provided early warning by detecting and tracking enemy aircraft with the electronic gear in the large radomes above and below its fuselage.

The Lockheed EC-121 Warning Star was a United States Navy and United States Air Force Airborne early warning and control radar surveillance aircraft. A military version of the Lockheed L-1049 Super Constellation, it was designed to serve as an airborne early warning system to supplement the Distant Early Warning Line, using two large radomes, a ...

EC-121s played a key role by monitoring airborne North Vietnamese MiGs and guiding USAF fighters to intercept them. Orbiting securely outside the border, EC-121 crews used the aircraft's radar and enemy radio communications to detect and …

The EC-121s monitored and reported North Vietnamese air traffic, guided U.S. fighters to intercepts, directed aircraft to their aerial refueling tankers and guided rescue aircraft and helicopters to downed pilots.

EC-121 "Warning Star" Early Warning Aircraft Numerous airborne early warning versions were also constructed as the EC-121 Warning Star. The military adapted the plane for its further use in the 1950s and 60s by modifying it for radar and using it as an aerial extension of the Distant Early Warning (DEW) Line, and in aiding in the rescue of ...

2012年1月18日 · Based on the Lockheed L-1049 Super Constellation airliner, the EC-121 Warning Star carried the long-range and height-finding radars required to provide coverage and warning to U.S. aircraft operating over North Vietnam. The EC-121s initiated operations out of Tan Son Nhut Airport on April 16, 1965.

EC-121C是美国空军第一种EC-121系列预警机，于1953年10月开始投入使用，机上电子设备重约6吨，机身背部有一个长2.44米 雷达 开引罩，内装AN/APS-20搜索雷达，机头装有AN/APS-42气象雷达。 EC-121D于1955年投入使用，共生产了72架。 与EC-121C相比，它翼尖带有副油箱，设备进行了改进。 各型EC-121一直使用到七十年代末才全部退役。 尺寸数据：机长35.41米，翼展37.95米，机高8.1米。 重量数据：空重36275公斤，正常起飞重量64620公斤。 性能数据： …

A USAF EC-121 made history in October 1967, when, while operating over the Tonkin Gulf off North Vietnam, it guided a US Fighter to the successful interception of a VNAF Mig 21, the first time an airborne controller had directed a successful attack, setting the stage for many future developments in the arena of AEW&C.

The Lockheed EC-121 Warning Star was an Airborne early warning and control radar surveillance aircraft in service with the United States Navy and the United States Air Force in the 1950s.