Recent Blogs
Cyclic Pitch Control Linkage Mechanism Explained: How It Works, Parts, Diagram and Uses
How a cyclic pitch control linkage works in helicopters — swashplate geometry, pitch link sizing, real numbers, and design tradeoffs from FIRGELLI engineers.
Collective Pitch Control Linkage Mechanism: How It Works, Parts, Diagram & Formula
Collective pitch control linkage explained — how helicopter swashplate linkages change blade pitch simultaneously to control lift, climb, and descent.
Oblique-disk Reciprocating Rectilinear Mechanism: How It Works, Diagram, Formula & Uses
Oblique-disk reciprocating rectilinear mechanism explained — convert rotation to linear stroke for pumps, compressors, and metering systems. Math, examples, tradeoffs.
Swashplate Mechanism: How a Helicopter Rotor Head Works, Parts, Diagram and Uses Explained
How a Swashplate converts fixed-frame control inputs into rotating blade pitch changes — used in helicopters, axial piston pumps, and CNC tool drives.
Coaxial Contra-rotating Rotor Mechanism: How It Works, Parts, Diagram, and Uses Explained
Learn how the Coaxial Contra-rotating Rotor Mechanism cancels torque, doubles lift density, and powers helicopters like the Kamov Ka-52 and Sikorsky X2.