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).
Goshawk 11 fan tests measuring air velocities through the radiator at varying speeds and conditions.
| Identifier | ExFiles\Box 77\4\ scan0283 | |
| Date | 26th October 1922 | |
| To Hs.{Lord Ernest Hives - Chair} from TMW. GOSHAWK 11. FAN TESTS. Air velocities passing through the radiator at varying speeds in 3 defined positions compared with a position 4" in front of centre of radiator called 'd.{John DeLooze - Company Secretary}'. Direct and 2nd. speed compared. Large fan compared with no fan fitted, shutters open and closed. Position A.{Mr Adams} is offside top corner - Pos. b. is halfway to centre of radiator from A.{Mr Adams} - and Pos. c is centre. Figures given are in ft. per min. Pencil Figs in M.P.H 13 tooth axle 3rd. speed. FAN ON. | M.P.H. | Shutters open | Shutters closed | |---|---|---|---|---|---|---|---|---| | | A.{Mr Adams} | B. | C. | D.{John DeLooze - Company Secretary} | A.{Mr Adams} | B. | C. | D.{John DeLooze - Company Secretary} | | 10 | 360 (4.1) | 680 (7.72) | 640 (7.28) | 880 (10) | 320 (3.64) | 620 (7.05) | 570 (6.5) | 750 (8.5) | | 20 | 850 (9.65) | 1500 (17.0) | 1220 (13.9) | 1500 (17.0) | 760 (8.6) | 1280 (14.5) | 1150 (13.1) | 1300 (14.8) | | 30 | 1480 (16.8) | 2360 (26.8) | 2020 (22.8) | 2740 (31.2) | 1300 (14.8) | 2260 (25.6) | 1900 (21.6) | 2300 (26.2) | | 40 | 1960 (22.25) | 3160 (36.0) | 2600 (29.5) | 3680 (41.75) | 1760 (20) | 2900 (33.0) | 2500 (28.4) | 3080 (31) | 10 500 20 FAN OFF. | | | | | | | | |---| | 10 | 350 (4) | 470 (5.35) | 560 (6.36) | 710 (8) | 280 (3.2) | 380 (4.3) | 370 (4.2) | 560 (6.35) | | 20 | 780 (8.9) | 1140 (12.9) | 1110 (12.6) | 1320 (15) | 590 (6.7) | 840 (9.5) | 920 (10.2) | 1160 (13.2) | | 30 | 1440 (16.3) | 1600 (18.2) | 1640 (18.6) | 2080 (23.6) | 1080 (12.2) | 1380 (15.7) | 1520 (17.2) | 1900 (21.6) | | 40 | 1700 (19.3) | 2100 (23.8) | 2200 (25.0) | 2940 (33.4) | 1320 (15) | 1900 (21.6) | 1940 (22) | 2690 (30.5) | 2nd. Speed. FAN ON. | | | | | | | | |---| | 10 | 580 (6.6) | 1000 (11.3) | 900 (10.2) | 950 (10.8) | 440 (5.0) | 910 (10.3) | 820 (9.3) | 900 (10.2) | | 20 | 1250 (14.2) | 2040 (23.2) | 1860 (21.1) | 1900 (21.5) | 940 (10.7) | 1960 (22.2) | 1720 (19.5) | 1860 (21.1) | | 30 | 1980 (22.5) | 3100 (35.2) | 2620 (29.7) | 3000 (34) | 1560 (17.7) | 2960 (33.6) | 2580 (29.4) | 2900 (33) | | ||