The Rolls‐Royce Spey Junior Powerplant

Abstract

A description of the Spey Junior bypass turbofan engine used in the Fellowship. The F.28 is powered by two Rolls‐Royce RB 183‐2 Spey Junior bypass turbofan engines, designed Mk. 555‐15. This engine is a lightened and simplified version of the Spey RB. 163‐2 engine which in different versions powers the HS. Trident 1 (Mk. 505‐5) and B.A.C. One‐Eleven 200 series (Mk. 506‐14 AW, 510‐14) and is similarly rated at a minimum I.S.A. sea level take‐off thrust of 9,850 lb. During cruise at 25,000 ft. and M = ·75 the specific fuel consumption is ·796 lb/hr/lb.

Citation

(1967), "The Rolls‐Royce Spey Junior Powerplant", Aircraft Engineering and Aerospace Technology, Vol. 39 No. 6, pp. 41-45. https://doi.org/10.1108/eb034279