Your last reply on this thread
Lol.. I'll be damned.. anyway this is an interesting line of thought you have raised. But don't think I deserve credit for triggering it
...I'm curious as to how Boeing will test the various associated systems (that will sustain human life sans engine-bleed) in an actual flight?
Most likely through a combination of ground testing, testbed testing, and 7E7 certification. Boeing can test the enviornmental system on the ground, test the engine on the 747 testbed, then certify the two together on the actaul airframe.
Given the accuracy of computer simulation and that new versions of CATA allow Boeing to simulate system interaction, and with test results from both the engines and enviornmental systems in hand, Boeing should have a good idea of how the system will work far before roll-out. Then a rigerous certification regimine, Boeing should be able to prove the system.
The bleedless systems of the 7E7 will definitly be one of the most challenging aspects of 7E7 development. An analogy might be drawn between the 777 and ETOPS development and the 7E7 and bleedless development.
Probably on the 7E7 prototype, with the test crew outfitted with breathing apparatus.
Well if they need breathing devices, other than just out of precaution, Boeing might have some certification issues to work out...