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).
Revised drawings for the Goshawk I & II silencer and exhaust system.
| Identifier | ExFiles\Box 48\4\ Scan157 | |
| Date | 3rd April 1921 | |
| R.R. 253A (100 T) (S.H. 783. 10-12-20) G 2747 To R from DA.{Bernard Day - Chassis Design} c. to BH. c. to E.O. RE GOSHAWK I & II - SILENCER. We send herewith drawings of the Silencer and Exhaust System revised in accordance with Mr Elliott's E2/G9-3-21. "N" Scheme 685 shews the system of Goshawk I with the reduced diameter of pipes, but retaining the original exhaust manifold, because in this engine the ports are on opposite sides. "N" Scheme 683 shews the manifold with the reduced diameter of pipe. This scheme shews one of the methods of carrying heat from the exhaust manifold to the hot spot on the induction pipe, but there have been other schemes submitted which may be preferred, and could be substituted for this, if desired. "N" Scheme 686 shews the modified silencer for both Goshawk I and II. "N" Scheme 684 shews the modified support, and "N" Scheme 814 shews the general arrangement of the exhaust system on Goshawk II. With reference to this we have thought that if the silencer was supported as shewn, it might not be necessary to support the swan-neck pipe. DA.{Bernard Day - Chassis Design} | ||