A
scaled down version of the cancelled RB.140 Medway, the RB.163
Spey was designed to power the BAe Trident. The RB.163 was
rate at 12,550 lbs or 20,500 lbs thrust with afterburner.
The RB.183 (originally called the Spey
Junior) is a simplified engine with lower power ratings.
A Spey derivative was produced by Allison as the TF41.
Two-shaft turbofan
4-stage (5-stage in some versions) LP
compressor driven by a 2-stage LP turbine
12-stage HP compressor driven by a 2-stage HP
turbine
