Helix 60, Helix Propellers, Helix self adjusting propeller from SportAir USA.

Helix self adjusting propeller

To get the best engine performance under varying situations of aircraft altitude, airspeed, phases of flight and engine power, the Helix H60A constant speed propeller is now an option.
 
In all flight conditions the propeller pitch is automatically adjusted to the designated engine speed, which allows beside the availability of maximum engine power also to achieve continuously smooth cruising flight speed with medium power setting. The combination of best climbing and fast flight setting capability makes it the optimum propeller.
 
The power range of the ready-to-buy H60A series is up to 135 kW. Special strength is available on request.

Different than the traditional design, featuring an interactive strong bearing system connecting the blade root and hub.
 
It consists of a main bearing and a collaborative bearing that constantly give pressurized contact to the blade, guiding the blade without friction and allowing no play. In case of aging on the main bearing, the collective bearing is able to adjust itself through the pre-tensioned elements. Through this self-stabilizing capability of the bearing system, the propeller gains a longest possible lifetime before overhaul.
 
With maximum surface and extra-long ever in fitting to the hub, the bearing system takes maximum centrifugal and bending force from propeller rotation.
 
Electronic actuator system
 
The electronic controlled actuator system which is easier to operate and maintain at much lower price than other constant speed propellers in market. The adjusting mechanic is deployed in line with the propeller axis with all forces transmitted by rotating instead of sliding elements. Without need of high force concentration, it allows a direct and fast adjusting with wide movements at low forces on propeller blade.
 
Thanks to the direct control feature, the Helix  constant speed propeller with this application is also particularly ideal to be used on UAV.
  
Propeller type and feature
The Helix 60 propeller is available for most aircraft engines in the market. For each engine you can find propellers to fulfill different flying features such as fast flight, cruising, maximum climbing, short take-off and low noise.