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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
The construction of two 40mm Type BB automatic guns for aircraft from existing experimental units.

Identifier  ExFiles\Box 176\1\  img058
Date  3rd September 1940
  
To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Ve.
c. to Rm.{William Robotham - Chief Engineer}

5

Ve/NP.5/CB.3.9.40.

40 mm. TYPE BB AUTOMATIC GUNS FOR AIRCRAFT.

In reply to HPS.{Horace Percy Smith - Experimental Factory Mgr}1/EP.{G. Eric Platford - Chief Quality Engineer}30.8.40, our memo Ve.6/CB.23.8.40 was intended to convey that no new automatic guns should be made.

The two guns mentioned in Rm.{William Robotham - Chief Engineer}8/ML.5.8.40, page 2, are to be built up from 2 of the 3 experimental guns now in the Shop at Sinfin.

Specifications to cover this work were issued under Ve/NP.6/CB.13.8.40 (specifications Nos. Ve/NP.7/CB.13.8.40 and Ve/FH.1/CB.9.8.40).

P.T.O.
  
  


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