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).
Letter requesting copies of a wind tunnel report and discussing discrepancies in drag co-efficient results with American tests.
| Identifier | ExFiles\Box 160\2\ scan0160 | |
| Date | 30th November 1933 | |
| Rm.{William Robotham - Chief Engineer} Dear Rm.{William Robotham - Chief Engineer} x-178 I would be very pleased if you would get one of your typists to do this wind tunnel report, and have prints made of the data sheet and the sectional areas. It is hopeless to try and get it done here. When the data sheet is copied I would like it separated at the green line into two parts. Witne respect to the co-eff. K.{Mr Kilner} this appears to be much more than given by the American tests, if we take the actual car drag. If however one takes the theoretical drag as given by the tunnel this is not much greater than that obtained by America. To sum up I must say that I have not been able to confirm much of what they discovered. Indeed there results are much more encouraging than our, but our are born out by actual test on cars. Yours Ev.{Ivan Evernden - coachwork} I would like 3 spare copies if you can manage it. Please | ||