twistair
Living in the Skies
- Joined
- Nov 24, 2003
- Messages
- 1,161
- Location
- Kronshtadt, Russia
- Aircraft
- none own :( currently flying Calidus mostly
- Total Flight Time
- Don't know exactly, ca. 3000 hours
Today we tested a simpliest antitorque addon on a Calidus stabilizer to see if it works.
First flight shows how a gyroplane without this addon reacts when rotor is unloaded and engine rpm are high. At each attempt one can see apparent roll to the right.
Second flight made half an hour later shows that there is next to none tendency to roll right when this addon is installed.
Main thing is that this addon costs less than $1. It takes half an hour to make it and to install it. It is a pair of simpliest Gurney flaps made of 20"x1.25" aluminium strip 0.5 mm thick each. Bend the strip so it makes 20x10mm angle bent to 90 degrees. Wider side is installed with double-side scotch to the stab' trailing edge so that it pitches left stab down and right stab up.
Video shows the difference in torque roll tendency with and without these flaps.
[video=youtube;1WXbi-ZWWQw]https://www.youtube.com/watch?v=1WXbi-ZWWQw[/video]
Fly safe!
First flight shows how a gyroplane without this addon reacts when rotor is unloaded and engine rpm are high. At each attempt one can see apparent roll to the right.
Second flight made half an hour later shows that there is next to none tendency to roll right when this addon is installed.
Main thing is that this addon costs less than $1. It takes half an hour to make it and to install it. It is a pair of simpliest Gurney flaps made of 20"x1.25" aluminium strip 0.5 mm thick each. Bend the strip so it makes 20x10mm angle bent to 90 degrees. Wider side is installed with double-side scotch to the stab' trailing edge so that it pitches left stab down and right stab up.
Video shows the difference in torque roll tendency with and without these flaps.
[video=youtube;1WXbi-ZWWQw]https://www.youtube.com/watch?v=1WXbi-ZWWQw[/video]
Fly safe!
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