Recent content by James9653

In terms of the complexity of a coaxial rotor, much of the mechanical complexity has been removed (based on my concepts). The rotor itself lies within the diameter of the stator/rotor core and is connected to both the inner axle and the outer rotor core. The design precludes dissymmetry of lift...

Yeah, that was the inspiration for what I am trying to design. Unfortunately the Hiller was plagued with a variety of issues. I wanted to see if they could be resolved with modern technology. Additionally, that is one BIG system, for any practical use it would need to be scaled down/made much...

I get it. I was seeing the comma, not a period.

Here are a couple sketches of my design direction, please forgive the look... The first pic is a top-down ortho of the platform's concept. The central air chamber and top blades are displayed, as well as structural support arms. The second sketch is a (not to scale) concept of the centre...

Ok, I understand the conversion to N and the static air density. However the disk area of 4,6670 sq m confuses me. An 8.5 foot diameter rotor (per) converted to meters 10.507 m^2.

Right, that makes sense. I was wondering about air flow distortion between two sets of blades and what effect it would have. Can you suggest a lift calculation that I could look at to more accurately judge my design? In order to give some context, what I am designing/researching is an updated...

Quick question - is the lift generated by coaxial contrarotating blades equal to the lift generated by each individual lifting surface (simplified to lift x 2), or is there a more comprehensive formula available? Currently, I am using the following formula to calculate the lift of a single...