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 of 'Hawk' engines and a proposed modification for airship use.
| Identifier | ExFiles\Box 36\2\ scan 077 | |
| Date | 28th June 1918 | |
| To R.{Sir Henry Royce} from EH. c. to CJ. c. to E.{Mr Elliott - Chief Engineer} c. to BY.{R.W. Bailey - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} X.2989 X.2935 EH2/LG28.6.18. 28th June 191 X.3320 X.2989 "HAWK" ENGINES. X.3322 The last series of "Hawk" engines were rated to give 90 HP at 1500 r.p.m. - 107 lbs.b.m.p. The actual HP. the engines developed varied from 88 to 94 HP, the average was consistently 90 HP. We think if we promise 100 HP. we shall quite satisfy the Airship people. We might consider fixing a gauze into the induction pipes to prevent fire, as they are to be used solely for Airship work. EH | ||