Lockheed Martin has received the go-ahead to alter the design schedule for the F-35 Joint Strike Fighter (JSF) and to build a lighter version of the short take-off and vertical landing (STOVL) variant, dubbed the B1. The new design sheds 2,100kg (4,600lb) from the baseline configuration and improves thrust performance and aerodynamic qualities. The US Defense Acquisition Board also has approved a plan to award a transition contract to prepare the JSF's alternative powerplant - the General Electric-led F136 - for development and demonstration.
Source: Flight International
