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).
Graph plotting cooling over a leading edge condenser (without fins) against air speed on logarithmic scales.
| Identifier | ExFiles\Box 179b\2\ img246 | |
| Date | 20th December 1932 | |
| CURVE No 3 COOLING OVER LEADING EDGE CONDENSER (WITHOUT FINS) READINGS CORRECTED TO 20°C AIR TEMPERATURE & PLOTTED TO LOG SCALES GIVE n=.875 IN FORMULA COOLING = k(ρV)^n(T1-T2) ERRORS IN AIR SPEED READINGS (± 3 M.P.H.) (Y-axis vertical text): 1 PINTS CONDENSATE = 52 C.T.U. = 94 B.T.U. (Y-axis label): COOLING (PINTS CONDENSATE/SQ.FT/MIN) (Y-axis scale - log/actual): 2̅.95 .09 2̅.925 .085 2̅.90 .08 2̅.875 .075 2̅.850 .07 2̅.825 .065 2̅.80 2̅.775 .06 2̅.750 (Graph line): GRADIENT .875 (X-axis top): AIR SPEED M.P.H (X-axis top values): 90 95 100 105 110 115 120 125 130 135 140 145 150 (X-axis bottom): LOG AIR SPEED (X-axis bottom values): 1.925 1.95 1.975 2.00 2.05 2.10 2.15 T.P. OE P 20-12-32 | ||