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AFLCMC History Office Profile picture
AFLCMC History Office
@AFLCMCHO
The Air Force Life Cycle Management Center History Office documents the Center's history, & educates and inspires its Airmen. likes/retweets ≠ endorsement
Feb 9, 2022 • 8 tweets • 6 min read
#OTD 1972 - Happy 50th Anniversary of the 1st Flight of the @BoeingDefense EC-137D, prototype for the E-3 Sentry Airborne Warning & Control System (AWACS). A thread. 1/6 @AFLCMCofficial @Team_Tinker @Hanscom_AFB @NATOAWACS 2/6 Airborne Early Warning Radar used since #WWII, needed to detect aircraft flying below ground radars. But trouble tracking multiple targets in 3D, esp over land. Radar reflections off surface aka "ground clutter" biggest issue. 1960s state of art was Lockheed EC-121D (pic)