The system uses differential fan rotation rates to control direction and rotation. It's a similar idea to the draganflyer or the microdrones.
By the way, thanks for the help so far. As an aside, I also contacted Mr. Marc de Piolenc who has written a book on the topic. He said that his...
Hi, I'm interested in exploring a shrouded propeller for a quad rotor helicopter. Before I get to far into the process I'm wondering if there is a general rule for duct length versus propeller diameter. In other words, if I have a 10 in propeller how far (approx) past the prop should the duct go...
