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).
Synopsis of a report on the performance and specifications of Gallay radiator sections for aircraft engines.
| Identifier | ExFiles\Box 149a\2\ scan0052 | |
| Date | 4th August 1932 guessed | |
| SYNOPSIS OF ATTACHED REPORT. 1. It will be noted that the Gallay radiator section submitted is 15% better than the 7m/m x 100m/m round tube (which up to that time had been found the most satisfactory for automobile use) This is the essential point of the report. 2. The frontal area, weight empty, weight full, resistance and other features show to the advantage of the Gallay system and confirm our claims that our radiators are more efficient than any others. 3. It will be noted that the weight is 10.5 lbs. per unit being a total of 21 lbs. for a complete radiator. 4. The B.Th.Us. per square foot dissipated frontal area are 1560. 5. The tests were made on the latest Royal Aircraft Factory testing plant with special wind tunnel, etc, and may be accepted as most comprehensive and exhaustive, confirming in detail their previous tests on our sample sections. --------------- It will be noted that actual radiators were tested (as manufactured in quantities of several thousands) The report therefore has an enhanced value in comparison with tests usually made on purely experimental types which may not be satisfactory in actual use. The engine cooled was the 200 hp. Hispano Suiza as fitted to the Sopwith Dolphin aeroplane. On a contemporary type of aeroplane, namely the SE5 the radiator designed by the Royal Aircraft Factory to cool the same type of engine weighed 50 lbs. | ||