Research material for Part 2 of my WW2 OSS Trilogy, which should be finished by early summer 2019.
Stay Alert, Armed and Dangerous!
On 15 August 1936, however, the Air Ministry had placed an order for 180 Wellington Mk Is to Specification B. 29/36. These were required to have a redesigned and slightly more angular fuselage, a revised tail unit, and hydraulically operated Vickers nose, ventral and tail turrets. The first production Wellington Mk I was flown on 23 December 1937, powered by Pegasus X engines. In April 1938, however, the 1,050-hp (783-kW) Pegasus XVIII became standard for the other 3,052 Mk Is of all variants built at Weybridge, or at the Blackpool and Chester factories which were established to keep pace with orders.
Initial Mk Is totalled 181, of which three were built at Chester. These were followed by 187 Mk lAs with Nash and Thompson turrets and strengthened landing gear with larger main wheels. Except for 17 Chester-built aircraft, all were manufactured at Weybridge. The most numerous of the Mk I…
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