Who is Rolls Royce aircraft engines competitors ?

Did anyone know about this ??


Need you'll Help !!|||P%26amp;W or GE are the big ones in the turbine world.|||For jet and turboprop/turboshaft engines:





Pratt and Whitney





General Electric





CFM





For piston engines (they manufacture Continental engines under license):





Lycoming





Rotax|||General Electric is the other main jet engine manufacturer also Pratt and Whitney is too.





CFM International makes the the engines for every 737 model except the -100 which makes them a competitor too





airlines themselves change engines out themselves too depending on which ones are more fuel efficient and less mantnence