I like things with big propellers.
I think it is an interesting concept, however. I like things with big propellers.
It would never work for two reasons. One, the engines need to be placed so if one burns/falls off the other engine won't be damaged. Second, placing a prop in turbolent air (such as behind a wing) will reek havoc on the prop blades.
Me too, that's why I'm sad the the Unducted Fan and Ultra High Bypass engines they where testing in the 80's never caught on. With high oil prices you think they would since they are more efficient, as I understand it they never figured out how to make them quiet enough. T hat drawing looks like the idea is pusher/puller UDF engines. (Image removed from quote.)