WEST PALM BEACH: Pratt & Whitney Rocketdyne, a United Technologies Corp. company, is a step closer to flight testing the world's first hypersonic hydrocarbon-fueled and -cooled scramjet engine. The X-51A Scramjet Engine Demonstrator-WaveRider (SED-WR) successfully demonstrated key flight clearance objectives

U.S. Air Force analyses show the F-35 Lightning II is at least 400 percent more effective in air-to-air combat capability than the best fighters currently available in the international market.The Air Force's standard air-to-air engagement analysis model, also used by

Top dog Goldman Sachs is not afraid to play grim profit reaper, but now it's the target of shorts itself.