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).
Running time and test parameters for H.T.312 plugs on F.25 and F.607 engine test schedules.
| Identifier | ExFiles\Box 58\2\ Scan024 | |
| Date | 19th January 1932 | |
| RUNNING TIME OF H.T.312 PLUGS! Y 181va 19-1-32 In F.25. 4.30 mins. In F.607. 7.25 mins. 11.55 mins. F.25. Constant Speed.Varying Boost Power Curves. 2000 RPM. 350-500 HP. 2 hrs. Endurance Running at 'Z' 100 ft. Det'n. 1 1/2 hrs. Light 1 hr. F.607. Cons. Loop at 3000 & 595 HP. Power Curve 3000 - 2400 Plus 6.75 "Hg. Cons. Loop at 2800 & Plus 6.75 "Hg. Power Curves at rated boost (-1") Cons. Loops at rated boost. At 3000 RPM. 1 hr. 2800 RPM. 1 hr. Remainder 2600-2250 2 hrs. Light 3 1/2 hrs. 25 MINS. | ||