ESA study find inflight oxidiser collection possible

[pmn1]

Interesting Flight Global article from 2007, what happened to the idea?

http://www.flightglobal.com/articles/20 ... sible.html

 

[vulture4]

Interesting design, but with a 500MT take-off weigh and only generating 100 tons of lox, I'm not sure it is all that cost-effective to use air liquifaction as opposed to just carrying the LOX.