Graph comparing airflow through a Standard Bentley Head inlet port with and without a guide vane.
| Identifier | ExFiles\Box 31\2\ Scan120 | |
| Date | 29th August 1933 guessed | |
| STANDARD BENTLEY HEAD - E.B. 222 COMPARISON OF FLOW THRO' INLET PORT WITH & WITHOUT GUIDE VANE FLOW THRO' PORT CU/FT. MIN PRESS. DIFFERENCE ACROSS VALVE - "Hg CURVE R. {Sir Henry Royce} -(1) STD: HEAD WITHOUT VANE -(2) STD: HEAD WITH VANE | ||
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).