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 chart for a Goshawk Blower, showing pressure, efficiency, power, and temperature rise curves.
| Identifier | ExFiles\Box 179b\3\ img354 | |
| Date | 1st March 1933 | |
| DELIVERY PRESSURE [Hg] EFFICIENCY 50% 60% 70% AIR FLOW [LBS/MIN] HORSE POWER TEMP. RISE [C] GOSHAWK BLOWER V/44.X REF TESTS CORRECTED TO - Standard Bar 29.92 HG. Standard Temp 15 C. Standard Alt. 71K TEST DATES 25-1-33 DRIVE R.P.M. 2500 GEAR 150/17 ROTOR R.P.M. 22050 TIP SPEED 818 FT/SEC TOTAL EFFY POWER ONLY DEL. EFFY OVERALL EFFY TEMP. RISE POWER G.B.R. 1.3.33 2500 | ||