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 data comparison for three different radiator core configurations under specific temperature and waterflow conditions.
| Identifier | ExFiles\Box 149a\2\ scan0020 | |
| Date | 6th February 1932 | |
| 6-2-32 ROLLS ROYCE CORE 180° TOP TANK - 100° AIR - 35 G.P.M. WATERFLOW Note: The 1/4 T.H. x 3-1/4 and 1/4 T.H. x 4 Zig Zag cores were estimated to Rolls Royce R.M. from tests made on 17 x 17 test sections. (All Temperatures are in degrees F.{Mr Friese}) #7266-1 .25 x .45 x 3-1/4 1/4 T.H. x 3-1/4 1/4 T.H. x 4 x .044 - Reg.Prod. A.C. Zig Zag A.C. Zig Zag A.C. V-Vee-5 bump NEW MATRIX Frontal Area 456 456 456 Diss. Effective Area 430 430 430 C.F.M. @ 30 3055 4400 3830 @ 40 4100 5930 5270 @ 60 6435 9200 8350 @ 80 8340 12390 11200 @ 100 10800 15480 13920 Air Velocity @ 30 10.65 16.77 14.61 @ 40 15.65 22.60 20.15 @ 60 24.55 35.10 31.85 @ 80 31.80 47.20 42.70 @ 100 41.10 58.80 53.10 Air Rise @ 30 46.4 27.3 32.0 @ 40 43.8 23.9 27.9 @ 60 38.9 20.3 23.8 @ 80 36.1 18.3 22.1 @ 100 32.7 17.2 20.6 Water Drop @ 30 8.2 6.95 7.09 @ 40 10.4 8.2 8.5 @ 60 13.75 10.8 11.5 @ 80 17.4 13.1 14.4 @ 100 20.4 15.5 16.6 B.T.U./Min. @ 30 2325 1975 2015 @ 40 2950 2330 2420 @ 60 3900 3070 3270 @ 80 4950 3720 4080 @ 100 5800 4390 4715 W. O.{Mr Oldham} Emmons | ||