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).
Test report on damper governor control, detailing pressure and time lag measurements.
| Identifier | ExFiles\Box 179b\3\ img002 | |
| Date | 30th December 1932 | |
| DAMPER GOVERNOR CONTROL 30.12.32. N.S. 3468/3533. Pressure - Time Lag between Governor Pump and Damper using "Lockheed" fluid and 1/4" diameter 12 ft. pipe line. | Pump Speed R.P.M. | Pump Press. lbs/sq.in. | Damper Press. lbs/sq.in. | Time to build up Press -Secs | |-------------------|------------------------|--------------------------|-----------------------------|--------------------------|----------------| | | | | Pump Press from zero | Damper Press from zero | Pump to Damper.| | 128 | 2 1/2 to 3 | 2 1/2 | 2 secs | 4 secs | 2 secs | | 256 | 11 to 13 | 11 1/2 | 2 secs | 4 secs | 2 secs | | 342 | 15 to 19 | 17 | 3 secs | 5 secs | 2 secs | Time to pump "Lockheed" through 1/4" dia., 12 ft. pipe line - from dry - at 200 R.P.M. = 18 secs. N.B. This governor had the lengthened piston N.S.3532. From the above results, this apparently had no effect upon the pressure fluctuations. | ||