SAE ARP355B-2013 PDF

Scope: This document provides definitions pertaining to dual and coaxial counter-rotating propellers. 1. Dual Rotation Propellers or Dual Rotation Propeller Shafts - The concentric arrangement in which each component of the propeller rotates in an opposite direction at the same speed because of a fixed gear ratio between shafts. 2. Coaxial Propellers and Coaxial Propeller Shafts - The concentric arrangement in which each component of the propeller rotates in an opposite direction wherein the speed of each component can vary independently because no fixed gear ratio is incorporated between the shafts. 3. Counter Rotating Propellers and Propeller Shafts - The airplane arrangement in which shafts and propellers rotate in opposite directions but in which the shafts are not concentric. 4. Inboard Component - The component of a dual rotation or coaxial propeller which is mounted on the inboard shaft. (Nearest to power source) 5. Outboard Component - The component of a dual rotation or coaxial propeller which is mounted on the outboard shaft. (Farthest from power source) 6. Designation of Number of Blades - The number of blades of a dual rotation or coaxial propeller shall be designated as the total number in both components.

SAE ARP355B-2013 history

2013 SAE ARP355B-2013 Terminology of Dual and Coaxial Counter-Rotating Propellers
2004 SAE ARP355A-2004 Terminology of Dual@ and Coaxial Counter-Rotating Propellers
1995 SAE ARP355-1995 TERMINOLOGY OF DUAL, AND COAXIAL COUNTER-ROTATING PROPELLERS
1946 SAE ARP355-1946 Terminology of Dual@ and Coaxial Counter-Rotating Propellers