
The U.S. Air Force and Lockheed Martin [LMT] held the sixth instrumented measurement vehicle (IMV) flight test for the company's hypersonic AGM-183 Air Launched Rapid Response Weapon (ARRW) on a B-52H bomber from Edwards AFB, Calif. on Dec. 19. "The extreme environmental conditions while travelling at high speeds and at altitudes above 50,000 feet offer a unique challenge," Lockheed Martin said on Dec. 21. Such challenges include equipping sensors and electronics to withstand the heat, friction, and air resistance created…