Since there was so little time to perfect this installation, as a compromise, a French "Ratier" VP airscrew was fitted to the Comets' "R" engines, which utilised a simple air-filled bladder for a once-per-flight automatic pitch change.
To address the time constraints, a French "Ratier" VP airscrew was installed on the Comets' "R" engines. This installation featured an air-filled bladder that provided a one-time automatic pitch adjustment during each flight.