An “Airscrew”-propelled airplane, now that’s a neat idea! I guess the airplane can be used as an efficient tunnel borer in case of crash.

Charlie, is there a #1, #3 and so on?

That “air screw” business was one of those things that just wouldn’t go away in the 30s.

Was there ever a real-world application of it? I know that it was popular for watercraft at one time too, but again, other than Bushnell’s Turtle, has it gotten a lot of use?

jayessell: I know have #1, it was a very short lived feature, I’m not even sure there was a #3.

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Does the inventor realize that for vertical take off the thrust has to more than equal the weight of that monster? Also co-ordinating the power of 8 lifting propellers spread widely on the plane in real time is going to be fun.

i think the inventor is dead. the technology does exist for the “heli plane”. he was just a bit ahead of his time.