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).
Various aircraft radiator and air intake designs.
| Identifier | WestWitteringFiles\V\December1930-February1931\ Scan034 | |
| Date | 20th December 1930 guessed | |
| -4- at the front edge and flows out at the rear edge. When operated as retractible radiators the front edge swings about the front water pipe, glands being provided to form the water joint, and the rear end retracts into the fuselage. The operation is particularly neat and it would appear to be more reliable from the point of view of water leaks than the usual telescopic joints of the retractible honeycombe radiators. The operation would be simpler, their appearance suggests that the head resistance would be considerably less and from observation it appeared that the Lamblin radiator on various machines was smaller than the honeycombe type on machines with similar size engines. We should think that a radiator of this form built into the 'centre section' would be an ideal scheme for evaporative cooling on such machines as the 'Hart' or 'Fox' and give low resistance. It would be interesting to try one of these radiators on our hangar test. Partly Concealed Radiators. On the Breguet 27. A2. Reconnaissance machine the honeycombe radiator was half concealed in the fuselage and a tunnel provided round it as shewn in appended sketch. Small streamline section shutters were placed fore and aft of this radiator. It would appear an interesting attempt to reduce radiator drag. Air Intakes. On the same machine the six carburetters of the Hispano engine were provided with six separate forward intakes arranged in the cowling as shewn in sketch. Several machines had their air intakes facing forward such as Dewoitine and Spad. In all cases they were formed in the cowling but it was difficult to see if they had the equivalent to our venturi scheme. Hot Air Intakes. An ingenious scheme for a hot air intake combined with exhaust manifold was seen on the Breguet - "Question Mark" - used by Costes and Bellonte on the Paris - New York flight. The two exhaust manifolds were brought out on top of the engine and the air intake formed a sleeve round the manifold. Both front and rear of the sleeve were open. | ||