Describe the interaction between the system and its environment.

The Treasury would not approve project funding until the aircraft’s basic design, manufacturer, cost, and delivery date were defined. The RAF and MOD sent requests to the aircraft industry for design ideas and selected two manufacturers, Vickers Corp. and English Electric (EE). They favored Vickers for its integration capability (combining aircraft, engine, armaments, and support equipment into a single weapons package), but they also liked EE for its design experience with supersonic aircraft. So they decided to contract with both companies and adopt a design that would utilize features from both. The idea was approved by all other parties in the global system, and funding for the project was released.
The project grew as Vickers and EE hired subcontractors and expanded their teams for design, production, and management. The two companies and several other contractors merged to form a single new organization called the British Aircraft Corporation (BAC).