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).
Improving vehicle cooling for high-speed performance, covering fans, radiators, and bonnets.
| Identifier | WestWitteringFiles\U\May1930-July1930\ Scan101 | |
| Date | 25th June 1931 | |
| -7- Hs{Lord Ernest Hives - Chair}/HL./25.6.31.Contd. give it, as the lower half of the radiator cannot pass air very freely at present. Attacking the undershield seems the most promising development. Fan. The fan is of more importance at high speeds than we thought. We cannot afford to dispense with any of its efficiency. Possibly we should try to improve the adequacy of the drive to enable it to withstand high engine speeds. Radiators. We have found a difference in radiators made to the same drawing. We learn from Mr. Anderton Brown, the cooling expert at Farnborough that this is a difficulty he is constantly encountering. We know that we have lost a little efficiency in going from the 1 m.m. to the 1 1/2 m.m. gap, but the change was inevitable to prevent choked matrixes. The 26.8" high matrix will improve the conditions but gives us more air to get away from under the bonnet if the increase in area is to be used efficiently. General. Improved acceleration, brakes and arterial or special motor roads, all encourage high speeds. We know of no big car used on the Continent that does not fit ventilated bonnets. Therefore, while we are better off for cooling than we have been before, we think we shall still have to equip cars habitually used on the Continent with louvred bonnets. We shall also have to do all we know to cope with the high speeds that can now be attained on some English roads. We are carrying out a further series of tests to see how this can best be accomplished. HS{Lord Ernest Hives - Chair}/Rn.{Mr Robinson} | ||