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).
Eagle engine water pump performance and cooling, with a comparison to the Condor engine.
| Identifier | ExFiles\Box 36\3\ scan 073 | |
| Date | 2nd December 1925 | |
| y3036 Hs{Lord Ernest Hives - Chair}/TAG/LG2.12.25. FOR USE OF RR. ONLY. y3036 x2438 EAGLE WATER FLOW. At 1800 r.p.m. an Eagle engine water pump delivers at the rate of 42.5 galls/min. (unrestricted system), the power at 360 B.HP. The difference between the inlet and outlet temperatures being 12°C or 21.6°F which represents 9180 B.T.U's/min. loss to cooling water. Comparing these results with those of the Condor the above figures for the Eagle are quite reasonable and can be used as a basis for the reply to memo. Py/BLB2/AV/D27.11.25. At 1800 r.p.m. (For Eagle) B.T.U's/min / B.HP. = 2.36. " " " (For Condor) B.T.U's/min / B.HP. = 2.32. Therefore at 1700 and 1750 r.p.m. the pump delivers 40 and 41.2 galls/min., with a difference of 12°C (or 21.6°F) between inlet and outlet temp. we get 8640 and 8899 B.T.U's/min. respectively. The average of six curves shows the B.HP. at full throttle at 1700 and 1750 r.p.m. = 342 and 350 HP. Hs{Lord Ernest Hives - Chair}/T.A. Gibson. | ||