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).
Performance graph for a Goshawk Blower 144X, plotting various metrics against airflow.
| Identifier | ExFiles\Box 179b\3\ img359 | |
| Date | 14th February 1933 | |
| 3500 DEL. PRESS. TEMP EFF'Y BLOWER ONLY TEMP EFF'Y OVERALL EFF'Y GOSHAWK BLOWER 144X RIG TESTS CORRECTED TO:- STANDARD BAR 29.92 STANDARD TEMP 15° C DRY AIR TEST DATE: 26-1-33 DRIVE RPM 3500 GEAR 159/17 ROTOR RPM 30880 ROTOR TIP SPEED 1145 FT/SEC HORSE POWER TEMP RISE DELIVERY PRESSURE [" HG] EFFICIENCY AIR FLOW [LBS/MIN] TEMP RISE [C°] HORSE POWER 14-II-33 | ||