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 showing various rig test results against air flow.
| Identifier | ExFiles\Box 179b\3\ img358 | |
| Date | 26th January 1938 | |
| 3250 DEL. PRESS. TEMP EFF'Y BLOWER ONLY TEMP EFF'Y OVERALL EFF'Y GOSHAWK BLOWER 144 X RIG TESTS CORRECTED TO:- STANDARD BAR: 29.92 STANDARD TEMP: 15°C DRY AIR TEST DATE: 26-1-38 DRIVE R.P.M: 3250 GEAR: 150/17 ROTOR R.P.M: 28680 ROTOR TIP SPEED: 1063.5 FT/SEC TEMP RISE HORSE POWER DELIVERY PRESSURE (INS HG) EFFICIENCY AIR FLOW (LBS/MIN) TEMP RISE (C°) HORSE POWER 14.3.38 | ||