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Originally Posted by raj
not the date of contract signing, i want to know the date when the concept was tought that it was feasible to build one.
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I thought I answered that. It was 5 years from concept to first delivery.
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Originally Posted by raj
it could have been that most of the developement work for the 747 could have had been completed before the signing of the contract.
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You can look up the history of the 747. Pan Am approached Boeing and the concept was worked out cooperatively after Boeing lost the bid for a new military cargo plane to Lockheed (the C-5 Galaxy). There was basically 2 years of development work by Boeing before anything was signed. This was mostly hashing out the design, building scale models, wind tunnel testing, etc.
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Originally Posted by raj
regarding the number of subsystems, may be i exagerated a bit more, but i am pretty sure that the present day A380 carries atleast 10 times more electronic subsystems than the one that was carried by the initial 747's
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No doubt. Virtually everything on the 747 was hydraulic/mechanical.
They didn't have the help of CAD/CAM systems in 1965. Full scale mylars were drawn by hand for every part and every assembly, all the way up to the fully assembled aircraft.
I'm not knocking EADS, but
nobody knows how to build commercial jetliners better than Boeing.