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 discussing steam cooling for aeroplanes and the relationship between speed and horsepower for airships.
| Identifier | ExFiles\Box 151\3\ scan0138 | |
| Date | 29th January 1930 guessed | |
| V I hope you and Hs{Lord Ernest Hives - Chair} will come out to dinner with me at the Friary one day soon, and we can talk the covers off airships, and discuss this problem more fully. Steam cooling is the goods for aeroplanes, but we want 120°C boiling if we can get it. Sincerely Felix Grafs The reference to the speed varying as ³√H.P is well illustrated by the fact that at 4320 H.P we shall do 83 m.p.h, at 3900 B.H.P 80 1/2 mph, at 1800 B.H.P 64, and at 900 B.H.P about 50 m.p.h. I'll send you a curve soon. | ||