13/06/2026
Rolls Royce’s 20 year engine evolution
The 1916 Bristol F2b with the new Rolls Royce V12 Falcon passes infront of the Spitifre (first flew in 1936) with the V12 rolls Royce Merlin in a unique pairs formation at Shuttleworth’s Wings and Wheels airshow.
This Spitifre is a mkV with the Merlin 45 producing 1,500hp from 27ltrs. The Falcon III in the F2b maxed out at 285hp from 14.2 ltrs
So in the space of 20years Rolls Royce increased the BMEP (Break Mean Effective Pressure), the effective power per unit of displacement, by 2.75x!
… and less than 10 years after the first flight of the Merlin engine, Rolls Royce were mass producing jet engines!