Rolls‑Royce Conway engine entered service in 1960 with bypass design and 21,000 lbf thrust

The Rolls‑Royce Conway introduced the bypass principle, routing about 30% of cold intake air around the core before mixing with the hot exhaust, and entered airline service in 1960.

Major international carriers selected Conway‑powered variants of the Boeing 707‑420 and Douglas DC‑8‑40 for nonstop transatlantic routes with full passenger payloads, the Vickers Super VC10 used four rear‑mounted Conways each providing 21,000 lbf of thrust, and Lockheed selected Rolls‑Royce as the exclusive powerplant provider for its L‑1011 TriStar.