The Radioplane XQ-4 is an American supersonic target drone designed in response to an a USAF requirement to serve as a high-speed target for Terrier and Genie missiles as well as Talos, Sidewinder, Sparrow III, Falcon, Nike-Hercules and Hawk missiles. The Radioplane XQ-4 is powered by a Westinghouse JB1 turbojet providing a top speed in excess of Mach 2 and a flying time of up to 60 minutes. Research Radioplane XQ-4
 
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