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).
Table of calculations for a nomogram relating two variables, V and x, using logarithmic equations.
Identifier | ExFiles\Box 77\5\ scan0140 | |
Date | 26th April 1917 guessed | |
NOMOGRAM CALCULATIONS. Log V = 3.7 + x / 20 x = 20 log V - 74 V.{VIENNA} x. 5000 - .020 5100 + .15 5200 + .32 5300 + .49 5400 + .65 5500 + .81 5600 + .96 5700 +1.12 5800 +1.27 5900 +1.42 6000 +1.56 V.{VIENNA} x. 8100 + 4.16 8200 + 4.28 8300 + 4.38 8400 + 4.49 8500 + 4.59 8600 + 4.69 8700 + 4.79 8800 + 4.89 8900 + 4.99 9000 + 5.08 9100 + 5.18 6100 +1.71 6200 +1.85 6300 +1.99 6400 +2.12 6500 +2.26 6600 +2.39 6700 +2.52 6800 +2.67 6900 +2.78 7000 +2.90 9200 + 5.28 9300 + 5.37 9400 + 5.46 9500 + 5.55 9600 + 5.65 9700 + 5.74 9800 + 5.82 9900 + 5.91 10000 + 6.00 10200 + 6.17 7100 +3.02 7200 +3.15 7300 +3.27 7400 +3.38 7500 +3.50 7600 +3.62 7700 +3.73 7800 +3.84 7900 +3.95 8000 +4.06 10400 + 6.34 10600 + 6.51 10800 + 6.67 11000 + 6.83 11200 + 6.98 11400 + 7.14 11600 + 7.29 11800 + 7.44 12000 + 7.58 12200 + 7.73 | ||