By A Mystery Man Writer
Electric motor drive takes off in test flight of passenger hybrid electric plane
New Rolls-Royce engine for hybrid-electric flight completes successful first fuel burn
Rolls-Royce successfully tests 100% SAF in latest Pearl engines - Green Car Congress
Everything you need to know about regional, all-electric flight
Rolls-Royce Completes 100% SAF Test Program & Full Power UltraFan Run
Rolls-Royce successfully completes 100% SAF test program
rolls-royce 'spirit of innovation' is the world's fastest all-electric aircraft
New Rolls-Royce engine for hybrid-electric flight completes successful first fuel burn
First flight nears for Rolls-Royce ACCEL project, News
All-electric Alice takes first flight - The Engineer
Rolls-Royce successfully tests hydrogen-powered jet engine