[1] The RB.106 was a two-shaft design with two axial flow compressors each driven by its own single stage turbine and reheat.
It was of similar size to the Rolls-Royce Avon, allowing it to be used as a drop-in replacement, but it would have produced about twice the thrust (with reheat) at 21,750 lbf (96.7 kN).
Apart from being expected to power British aircraft such as those competing for Operational Requirement F.155, it was selected to be the powerplant for the Avro Canada CF-105 Arrow.
[3] However funding was cut with the 1957 Defence White Paper which terminated most aircraft development then under way.
The Arrow moved to an indigenous two-spool design similar to the RB.106, the Orenda Iroquois.