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).
Page discussing test results and recommendations for the screen opening gear.
| Identifier | ExFiles\Box 111\1\ scan0146 | |
| Date | 10th October 1938 guessed | |
| -2- (d) Screen Opening Gear. Our tests shew that screen flap when open is attributable to the chain gear not being centrally disposed with respect to the screen. Variations of wind pressure occur as the air currents vary. Because the support is not central the screen is twisted under the wind load to a varying degree proportional to that load. As the air is gusty the screen flaps. One central control or two controls symmetrically disposed about the centre must be provided. Yours faithfully, FOR ROLLS-ROYCE LIMITED. W Harvey Bailey CHIEF ENGINEER - CHASSIS. | ||