The SR177.

as it might have looked:



from a model by Guy Finch


Saunders Roe SR 177 P177 rocket interceptor
Span = 27' 1". Span over missiles = 30' 3"
Saunders Roe SR 177 P177 rocket interceptor
Height = 14' 3". Length = 50' 6"
Saunders Roe SR 177 P177 rocket interceptor
view from above
Saunders Roe SR 177 P177 rocket interceptor
view from below

Maximum speed: M2.35. Climb to 60,000 ft: 3.1mins

2 Red Top missiles on wings

Weight basic 14,522lbs. Weight Gross 25,786lbs

De Havilland PS.50 Gyron Junior DGJ 101 turbojet of thrust 14,000lb. De Havilland Spectre 5A rocket motor 10,000lbs thrust

In the 177, the rocket motor was uppermost, and the turbojet is below with a conventional nose intake. The jet engine had afterburning and considerably more power. A powerful AI-23 radar was fitted to make the 177 an all weather interceptor, and this accounted for a lot of the weight increase.

A naval variant was ordered, and the Luftwaffe and Canadian airforce expessed interest. However, the R.A.F. version fell victim to the 1957 Defence White Paper (Sandys "no more manned aircraft"), and the naval and Luftwaffe versions died some after this. At this point a full sized mock-up had been built, and construction of the wings and fuselage was well under way at the time of the final cancellation.

Saunders Roe SR 177 P177 rocket interceptor
An impression of the Luftwaffe variant.

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Nicholas Hill. Revised 17 July 2002.