Rolls-Royce RB401

The Rolls-Royce RB.401 was a two-spool business jet engine which Rolls-Royce started to develop in the mid-1970s[1] as a replacement for the Viper.[2] RB.401-06 prototype engines were already being manufactured when a decision to develop the higher thrust RB.401-07 was taken. Although ground testing of both the -06 and -07 continued into the early 1980s, a lack of funds caused the project to be cancelled.

RB.401
Rolls-Royce RB.401 turbofan engine at the Rolls-Royce Heritage Trust, Derby
Type Turbofan
Manufacturer Rolls-Royce
First run 1975

Design and development

Although the basic configuration of both engines was almost identical, the -07 variant had a larger fan diameter. The -06 version HP compressor was based on the eight-stage version of the RC34B research compressor, unscaled, whereas the -07 was a scaled-up unit. A single stage fan, driven by a two-stage LP turbine, supercharged the HP compressor which was driven by the single stage transonic HP turbine. The combustor was annular and the co-annular exhaust featured a lightweight target type thrust reverser.

Specifications (RB.401-07)

General characteristics

  • Type: High bypass Turbofan
  • Length:
  • Diameter: 32.4 in (fan)
  • Dry weight:

Components

  • Compressor:

Performance

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See also

Related lists

References

Notes
  1. Gunston 1989, p.155.
  2. http://www.flightglobal.com/pdfarchive/view/1979/1979%20-%202715.html

Bibliography
  • Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
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