Affordable Hypersonic Jets Could Be High-Flying Reality by 2023

Hypersonic aircraft and weapons that can fly more than five times the speed of sound may seem like a futuristic fantasy, but defense giant Lockheed Martin says it is committed to making these ultrafast innovations a reality. In fact, Lockheed Martin is doubling down on hypersonic aerospace technologies, Lockheed officials said recently at the company's Media Day. "Lockheed Martin continues to invest in propulsion technologies and advanced materials needed for hypersonic speeds," Marillyn A. Hews