I think this new profiles was presented in Germany early this year already ?
Yes, you are right, at AERO 2014 in Friedrichshafen we presented some cut-outs of the blade profiles for easy comparison.
Now we are at the stage when full scale manufacturing was started and substantial numbers of blades and rotor can be tested on different testing rigs.
community appreciate your, Artur, tries and IMPROVEMENTS (for sure), but be EXTREMELY carefull with all those "improvements" - they coudl bring SIGNIFICANT SECURITY RISKS, also, from experiance,
Thank you for your appreciation and warning. We will take it into consideration.
I'm not sure that utilization of students financed by governmetal funds (free man power - let state the truth...) will bring you somehwere ...
You have completely wrong concept of the project. There are no "students" involved.
The cooperation is with the Aviation Institute in Warsaw, which is not an educational, but pure research and development institution. These are experienced scientists, the Institute itself has almost 88 years of history of successful designs. (It has been established on August 1st, 1926).
The team involved has participated on such successful projects as SW-4 Puszczyk and W-3 Sokół and Anakonda helicopters.
Recently they developed an UAV helicopter ILX-27.
They have large scale wind tunnel and and rotor testing facilities available.
More here:
http://ioa.edu.pl/
Live example (of fine tuning in univercity and security) is Ukrainian helicopet AK 1-3 - rotor system was also "fine tuned" in Aviation Univercity of Kharkov for PERFORMANCE (whyle autorotation was ... forgotten) result: 40 produced helicopters and 30 already destroyed....
We prefer not to comment on projects of other companies without having first hand knowledge.
BY THE WAY - WHAT ARE YOU TRYING TO ACHIEVE WITH NEW "ADVANTAGEOUS" ROTOR ?
The theoretical calculations on the new profiles are predicting improvement of app. 10 knots in cruise speed and 10% reduction in fuel consumption on any given application.
The NACA 8-H-12 profile has been optimized for low rpm autorotational effectiveness, allowing hand starting the rotor or using a very weak prerotators with low prerotation rpm. It has been a trade off for performance. Modern gyroplanes use powerful prerotators and the rotors cannot be usually hand started from an enclosed cabin.