John Harlow wrote:

Even a helicopter has a chance of landing if the engine quits. I can't say
the same for this.

The inventor claims that it will make a safe descent (at a relatively steep
glide) as long as the rotor keeps turning. If the engine fails, the rotor must
be disconnected from the engine immediately and the nose lowered. Airflow then
keeps the rotor spinning. The situation is exactly the same as a helicopter.

And it seems like a bird strike would quite likely be fatal for more than
just the bird.

Quite possible. Of course, that's true of any aircraft, but this does appear to
be a bit more vulnerable.

George Patterson
The desire for safety stands against every great and noble enterprise.