An Air Molecules Journey Through the GE-90 Engine

GE’s GE90-115B is a high-bypass turbofan with a 128″ fan and 9:1 bypass ratio, generating up to 115,000 lbf of thrust while cutting fuel burn, emissions and noise. Drawing on EASA certification, Stanford research and propulsion literature, it details its design and air-molecule flow.

Jul 5, 2025 · By Mathew Lewallen · 11 min read