Lockheed Skunkworks chief Neal Kasena tells us that a Mach 5-plus class aircraft is certainly possible by 2018—the previously rumored deadline for a “prompt global strike” system—but that wouldn’t quite meet the desire to hit global targets in under an hour. For a Mach 5-class vehicle, he says, the Skunkworks has looked at using hydrocarbon fuels in a two-engine system—one a turbine for takeoff, climb, and descent/landing, and scramjets for super-high-altitude cruise. For the ultimate one-hour requirement, new fuels and a different technology would be needed—nearly doubling speed to Mach 9-plus—but the solution probably wouldn’t be available until the mid-2020s.
A new Navy missile could fill a range gap that the U.S. Air Force needs for its fourth-, fifth-, and sixth-generation fighters. The Navy’s portfolio acquisition executive for munitions posted information on the AIM-424 Long Range Air-to-Air Missile online on Aug. 22, the same day it unveiled the project at…