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).
Graph comparing airflow resistance of a dirty versus a clean gimp at different engine speeds.
| Identifier | ExFiles\Box 152\3\ scan0188 | |
| Date | 2nd April 1936 | |
| BURGESS PRODUCTS COMPANY LTD. RESTRICTION INCHES Hg 8 6 4 2 NET RESTRICTION DIRTY NET RESTRICTION CLEAN 50 100 150 200 250 AIR FLOW - C.F.M. COMPARISON OF RESISTANCE TO AIR FLOW OFFERED BY DIRTY AND CLEAN GIMP AT DIFFERENT ENGINE SPEEDS. BURGESS PRODUCTS CO. LTD L.101. — 2-4-36 — CP ROLLS-ROYCE LTD. | ||