Thus [Valkyrie Workshop] has come up with a simple but ingenious rig to evaluate a motor and propeller combo without ... allowing a direct readout of the thrust in grams or kilograms.

The action of a propeller is that of a rotating wing where the lift provided by the wing is the desired thrust for propulsion. The blades also have an associated drag which reduces the overall ...

Fly without wings or propellers? One team just made it happen—this breakthrough could forever change how we take to the skies.

“What you need is relative motion.” In addition, the shape of the channel deflects propeller thrust downward, as much as 26 degrees. With this extra lift, an aircraft with a channel wing is ...

While at rest, the folding propeller looks like a small dome attached ... attached to a digital scale as a way of measuring thrust. The test unit isn’t large — the dome is only 1.6 cm in ...

and is described as essentially a cycloidal propeller – where vertical blades are mounted to a spinning circular plate to provide thrust. It's not a new idea, the Cyclogyro from and few years ...