MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202511000633 A) filed by Endureair Systems Private Limited on January 03, 2025, for Device For Presetting A Pitch Angle Of A Rotor Blade Based On Anticipated Altitudes.

Inventors include Abhishek; and Prabuddha Singh.

The application for the patent was published on July 31, 2026, under issue no. 31/2026.

Abstract: ABSTRACT DEVICE FOR PRESETTING A PITCH ANGLE OF A ROTOR BLADE BASED ON ANTICIPATED ALTITUDES The present invention discloses a device for presetting a pitch angle of a rotor blade based on anticipated altitudes. The device (100) includes one or more base hubs (104) with one or more flanges (106, 108) to connect to a rotor mast. One or more loadbearing shafts (110) protruding from the one or more flanges (106, 108) to endure centrifugal loads. One or more blade grips (116) connected to each loadbearing shaft (110) to hold the rotor blade. A plurality of aperture pairs (118) formed on each flange (106 and 108) of the one or more flanges (106 and 108) and the one or more blade grips (116) at pre-defined pitch angles. The plurality of aperture pairs (118) enable presetting the pitch angle based on diverse operating conditions. The device (100) allows manual adjustment of rotor blade pitch to optimize performance at different operating altitudes without complex mechanisms. Figure 1A

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