Test report on Bourdon shutters, recording air and water temperatures at 40 and 60 M.P.H. with shutters open and closed.
| Identifier | ExFiles\Box 5a\3\ 03-page040 | |
| Date | 19th March 1931 | |
| XS 840 19.3.IV. 19/3/31 TESTS WITH BOURDON SHUTTERS. Temperatures taken every mile. All runs commenced at 70°C [TABLE 1: 40 M.P.H.] IN. 40 M.P.H. Column 1: Shutters Closed. Air. | Water. 19 | 73 19 | 71 18.5 | 75.5 20 | 71 19 | 70 Column 2: Shutters Open. Air. | Water. | Diff. 19.5 | 71 | 1 18.5 | 68 | 2.5 20 | 68 | 2 18.5 | 68.5 | .5 Average Diff. 1.8°C OUT. 40 M.P.H. Column 3: Shutters Closed. Air. | Water. 18.5 | 71 18.5 | 68 18.5 | 68 19.5 | 68 19.5 | 65 Column 4: Shutters Open. Air. | Water. | Diff. 19 | 67.5 | 3.5 18.5 | 65.5 | 3 18.5 | 65 | 3 19.5 | 66 | 2 19.5 | 60 | 5 Average Diff. 3.1°C [TABLE 2: 60 M.P.H.] IN. 60 M.P.H. Column 1: Shutters Closed. Air. | Water. 20.25 | 76.5 20 | 75.75 20 | 75 20 | 75.5 20 | 76 Column 2: Shutters Open. Air. | Water. | Diff. 20 | 75.5 | 1 20 | 73 | 1.75 20 | 73 | 2 20.25 | 74 | 1.5 | | 2 Average Diff. 1.65°C OUT. 60 M.P.H. Column 3: Shutters Closed. Air. | Water. 19.75 | 75 19.5 | 75 19.5 | 77 19.5 | 79 19.5 | 77 Column 4: Shutters Open. Air. | Water. | Diff. 20 | 74.5 | .5 19.5 | 70 | 5 19.5 | 73.5 | 3.5 19.5 | 74 | 5 19.5 | 74 | 3 Average Diff. 3.4°C J.H.Hancock. J.H.H. | ||
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).