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Saunders-Roe S.36 Lerwick


The twin-engine Sarò Lerwick was intended to meet a medium-range maritime reconnaissance requirement, Specification R. 1/36. First flown before the end of Ì938, the prototype featured twin fins and. rudders but from the outset was found to be lacking m lateral stability, and displayed a determination to roll and yaw in cruising flight, making the aircraft impossible to fly 'hands off”. In due course a single fin and rudder was fitted, but not until this was considerably enlarged was there any improvement in the handling.

Starting with the seventh production example, wing incidence was increased and enlarged propellers fitted to the Hercules II radials, but the propellers were found unsuitable for operating on rough water. Stalling tests showed the Lerwick to have vicious traits, the stall under alighting conditions being accompanied by sharp wing-drop.

Twenty one examples were produced and the Lerwick was first delivered for service with No, 209 Squadron in December 1939 at Oban, but after the type had flown a small number of semi-operational patrols it was decided to abandon further efforts to rectify its problems. The last eight aircraft were powered by Hercules IVs and the final example was completed m November 1940. One aircraft was flown by No, 240 Squadron but was lost on 20 February of that year, and some flew with No. 4 Operational Training Unit at Invergordon.

Saunders Roe S 36 Lerwick
Engines: 2 x Bristol Hercules II, 1356 hp
Length: 63.615 ft / 19.39 m
Height: 20.013 ft / 6.1 m
Wingspan: 80.84 ft / 24.64 m
Wing area: 844.974 sq.ft / 78.5 sq.m
Max take off weight: 33205.1 lb / 15059.0 kg
Max. speed: 188 kts / 348 km/h
Cruising speed: 144 kts / 267 km/h
Service ceiling: 13993 ft / 4265 m
Wing loading: 39.36 lb/sq.ft / 192.0 kg/sq.m
Crew: 6
Armament: 7x cal.303 MG (7,7mm), 907kg Bombs



Saunders-Roe S.36 Lerwick




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