The program was ended because of the cost but also due to aerodynamic stability problems.
Here’s What You Need to Remember: Weighing a beefy 8,500 pounds, the RQ-3 DarkStar was powered by a Williams-Rolls FJ44-1A engine that offered a takeoff thrust of 1,900 pounds. It provided a cruising speed of 288 mph and a service ceiling of 45,000 feet. A total of four were built, including the first prototype that crashed.
Last year, the United States Air Force announced that...
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