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).
Page of calculations for determining engine power using several variables and formulas.
| Identifier | ExFiles\Box 179\2\ img195 | |
| Date | 25th January 1932 guessed | |
| -2- 1° - C₁ = (18p x Pb) / 100 where p = .05 + (.760 - .4232) 1.36 = .414 Kgs per sq.cm. Pb = 414 HP. C₁ = (18 x .414 x 414) / 100 = 30.8 2° - C₂ = (500 + t₀) / (500 + tg) where t₀ = 18°C. tz = 7°C.75 C₂ = 518 / 492.25 = 1.052 Engine Power = 30.8 + 414 x 1.052 = 465.8 HP ___ | ||