The Sikorsky/Boeing SB-1 Defiant is back flying after a delay caused by “joint creep” identified in the propulsion system testbed gearbox. The Defiant team decided to fix the issue instead of ...

Discover the SB‑1 Defiant story - Sikorsky and Boeing's compound-coaxial helicopter built on X2 technology, reaching over 245 knots and hauling battlefield rockets. Despite test flights, fly‑by‑wire ...

Here’s What You Need to Remember: While rotor blades are, quite naturally, likely to generate some kind of radar signal to enemy systems, depending upon range and the fidelity of a given air ...