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 to Park Ward & Co. discussing the aerodynamic effects of modifying a streamline car's height and body.
| Identifier | ExFiles\Box 161\1\ scan0226 | |
| Date | 4th October 1938 | |
| 1380 Rm{William Robotham - Chief Engineer}8/R.{Sir Henry Royce} 4th. October 1938. C.W.Ward, Esq., Messrs. Park Ward & Co. Ltd., 473, High Road, Willesden, LONDON, N.W.10. Dear Mr. Ward, Many thanks for your letter of October 3rd. We cannot say with any certainty what the effect of raising the height of the streamline car 3" would have on the performance, but I should be very doubtful if it would materially decrease the car's top speed. We think that the front end of the car is mainly responsible for its low drag. I am sending you a complete set of photographs of the car which we took when it was at Derby. I also have a wind tunnel model which I could loan to you if you would promise to let me have it back within a week. I believe if somebody built a 4-door saloon with a normal type of luggage trunk, a fairly generous radii of the windscreen and top edges of the body, and incorporate it with the streamline car's front end, it would make a very good automobile. Yours sincerely, | ||