Autogyro idea

[Barron 64]

I have decided to do a glass panel. Most likely using Levils AHRS - G Series. I have been told that they can re-write the software for me to give me main rotor speed as well.

[KD>]

Barron,

I have a question. What would be the chance of making a very light weight, carbon-composite "doughnut" fairing that encircles the rotor.

Bear with me for a minute here before rolling your eyes. If said fairing could be made to avoid wind loading by making it a very slippery shape with periodic bracing extending to the craft all around the rotor's circumference. See it almost as a very lightweight "ducted fan" housing that prevents the relative wind from loading the rotor head-on or forming a relative vacuum behind it.

This would free-up the rotor to draw air from below and not have to deal with air forced against it from forward movement. By calculation, it looks possible that it would take a lot of forward load without moving or buckling. I suppose there would have to be a way to partially fold it for storage but it seems that it would be a cheap, elegant solution to the "100mph" limit.

Just a thought. Thanks.

KD

[Master Roda]

KD-

Here's a concept that worked. Maybe it isn't what you're thinking,but interesting anyway. Built and tested by Jim Vanek's father Chuck Vanek. Somewhere back in time this was tested to find a 10 MPH increase.
We still have the molds....

Jon

PS: What 100 MPH limit are you talking about? We break that speed regularly with our SCII and M912.

[Master Roda]

Recently abandoned project:

[dinoa]

Here is a model of a chopped single seat Vari Eze gyro fitted with Rotax 912, chopped vari eze canopy ($400), Aviomania tail.

Dino

[dinoa]

Forgot the pic

[robert mckenny]

Has three tail rotors been used before ? I would think that while engine is running all three would give direction and when engine is out the two outside tail rotors would still be in air stream so you would still have control.

[Rotor Rooter]

Three tail-rotors were used by a person who's previous experience was obviously in fixed wing aircraft.







Dave

[robert mckenny]

Sorry I ment rudders three rudders in which all three move together when pedals are pushed.

[Barron 64]

Not sure on that. Still in the learning curve. But as I understand it ducted fans have yet to be functional.

Originally Posted by KD>

Barron,

I have a question. What would be the chance of making a very light weight, carbon-composite "doughnut" fairing that encircles the rotor.

Bear with me for a minute here before rolling your eyes. If said fairing could be made to avoid wind loading by making it a very slippery shape with periodic bracing extending to the craft all around the rotor's circumference. See it almost as a very lightweight "ducted fan" housing that prevents the relative wind from loading the rotor head-on or forming a relative vacuum behind it.

This would free-up the rotor to draw air from below and not have to deal with air forced against it from forward movement. By calculation, it looks possible that it would take a lot of forward load without moving or buckling. I suppose there would have to be a way to partially fold it for storage but it seems that it would be a cheap, elegant solution to the "100mph" limit.

Just a thought. Thanks.

KD

[Barron 64]

Originally Posted by dinoa

Forgot the pic

Interesting. Thanks.

[kiwidesign79]

There's is a bloke in New Zealand who has a working ductive fan (2 in fact) on his Jet pack. Look up the "Martin Jet Pack" I think there's stuff on him in this forum.

[Barron 64]

Thanks for the information. But I plan on keeping it as simple as possible.

Originally Posted by kiwidesign79

There's is a bloke in New Zealand who has a working ductive fan (2 in fact) on his Jet pack. Look up the "Martin Jet Pack" I think there's stuff on him in this forum.

[Master Roda]

Originally Posted by robert mckenny

Sorry I ment rudders three rudders in which all three move together when pedals are pushed.

Air and Space 18-A
Sport Copter II

Both have triple rudders. I thought I saw a gyrodyne with triple rudders, but I don't remember for sure.

[Master Roda]

Originally Posted by Barron 64

Not sure on that. Still in the learning curve. But as I understand it ducted fans have yet to be functional.

Ducted fans are more efficient than open props under 100 MPH.