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.
Bell Stabilizer Bar Mechanism Explained: How the Flybar Damps Cyclic Input on Two-Blade Rotors
Learn how the Bell stabilizer bar damps rotor cyclic input on helicopters like the Bell 47 and UH-1, with formulas, examples, and design tradeoffs.
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.