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).
Visit to Hucknall discussing modifications and developments for aero engine radiators.
| Identifier | ExFiles\Box 150\2\ scan0290 | |
| Date | 12th January 1940 | |
| Rm. {William Robotham - Chief Engineer} c to Da. {Bernard Day - Chassis Design} c to Ev. {Ivan Evernden - coachwork} c to JD. {J. Draper - Frames} c to Rm {William Robotham - Chief Engineer} /Col. 1280 Rm {William Robotham - Chief Engineer} /Ed. {J. L. Edwards} 1/GH.12.1.40. REPORT ON VISIT TO HUCKNALL 4th January 1940. Visit to Hucknall was made by Rm {William Robotham - Chief Engineer} /Ed. {J. L. Edwards} on the above date with the object of discussing latest modifications carried out on radiators. The principal points were as follows:- 1. The aero matrix at present used as standard, is the Honeycomb variety, which costs approximately 12/6d. per lb. Developments have been made recently, using Morris fin and tube blocks, which after test proved themselves to be just as efficient from the point of view of heat dissipation and drag. The cost, however, was reduced to approximately 3/6d per lb. 2. The original type of matrix tested was 2 3/4" deep, with five rows of staggered tubes and eight gills per inch. This was modified in the course of development to give the block 2 3/4" deep, with three rows of tubes, not staggered, and eight gills per inch as before. This, it was claimed gave adequate heating dissipation with lower drag than the original fin and tube block. Performance curves of the above radiators are promised, but have not yet come to hand. 3. Experiments have been carried out at Hucknall on radiators manufactured by Serck, John Marstons, Coventry Radiator, Gallay and Searle Radiator, in addition to the Morris blocks mentioned above. No comparison, however, from the point of view of cost is available between fin and tube and film blocks. 4. It is proposed to communicate with Morris and Searle Radiators Co. Ltd., to obtain radiators of the fin and tube type, together with weight and cost analyses. This will have to be adapted to Bentley V and comparison - continued - | ||