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 showing the effect of the inlet port angle on the flow through a valve port.
| Identifier | ExFiles\Box 31\2\ Scan134 | |
| Date | 26th September 1938 guessed | |
| SHEET 1 EFFECT OF ANGLE OF INLET PORT (IN PLAN) ON FLOW THRO' VALVE PORT TAKEN AT FULL LIFT = .480" FLOW CU.FT/MIN NORMAL POSITION OF PORT PORT ARRANGED SO THAT CENTRIFUGAL EFFECT DIRECTS AIR TO UNRESTRICTED SIDE OF VALVE PRESS. DIFF. ACROSS VALVE (INS. Hg) | ||