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).
Experiments with low loss manifolds and silencer systems to reduce back pressure.
| Identifier | ExFiles\Box 19\7\ Scan085 | |
| Date | 1st May 1926 guessed | |
| contd :- -5- meet at a high velocity and so loose any advantage, in scavenging, they may possess due to their kinetic energy. In the experimental manifold it would seem that the k.e. assists in reducing the back pressure. The overall loss with this manifold and standard silencer is very little less than standard system because in this case the silencer has more work to do. What we gather from these tests is that with a low loss manifold - such as the experimental one - full advantage can be taken of cutout which was not the case previously. We are continuing these experiments and intend trying various size down pipes with the view of determining the minimum size that can be employed without loss. Hs{Lord Ernest Hives - Chair}/A.C.Lovsey. | ||