Page 272 - The Jet Engine
P. 272
Rolls-Royce Tyne
The Orion was a two-spool turbo-prop
designed to operate at its full rated power to
20,000ft, achieved by throttling its sea level
power to a maximum of 5150 ehp. Flight
testing commenced in August 1956 with the
engine installed in the port outer nacelle of the
Bristol Britannia. Development was disconti-
Bristol BE 25 Orion nued owing to lack of demand for turbo-props
at this time.
