I dont think BAE contribute on the design as BAE contribution is written clearly in the last section of the report: More like component supplier, but of course producing critical component is really important on the program. From this we can conclude that preliminary design and detail design of F 35 is a work of only LM and Northrop Grumman.
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THE JSF TECH TEAM
Lockheed Martin Aeronautics Company is the prime contractor for the F-35 JSF program. The company is responsible for the design, supervision and support of all major subsystems of the aircraft. Lockheed Martin is also in charge of producing the forward fuselage and wings, and, along with the governmentoperated JSF Program Office, has the ultimate responsibility to deliver the F-35 and its support systems. Final assembly of the F-35 will take place at Lockheed Martin's factory in Fort Worth, TX.
Northrop Grumman is designing and integrating the center fuselage section of the F-35, including incorporation of the subsystems and development of a large fraction of the F-35 mission systems software, ground and flight test support, signature and low-observables development support, and modeling and simulation activities support. Northrop Grumman is also in charge of the fire control radar and the electrooptical distributed aperture system. The company is responsible for the integrated communications, navigation and identification avionics suite and the training courseware. BAE Systems' experience with military aircraft ensures fast and precise design and engineering of the F-35 airframe, mission systems, aft fuselage and empennage, while meeting the F-35's stringent stealth requirements.
BAE Systems' is also responsible for the fuel system, crew escape, lifesupport system, and Prognostics and Health management system integration. The company shares the work load in autonomic logistics and is involved in the Integrated Test Force, including vehicle and mission systems flight test. The F-35 electronic warfare systems suite is BAE's work, as is the vehicle management computer and the communications, navigation and identification modules. The company provides advanced affordable and lowobservable apertures (antennas), as well as the pilot's control stick and throttle.