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).
Study of pressure variations caused by temperature changes in a system with staggered orifices.
| Identifier | WestWitteringFiles\S\June1928-August1928\ Scan046 | |
| Date | 28th June 1928 guessed | |
| STAGGERED ORIFICES. VARIATION OCCASIONED TEMPERATURE. Top Left Graph: LBS/D" 800, 600, 400, 200 22° C 61° C HIGH PRESSURE 55/60 LBS LOADS STAGGERED H.P. PASSAGES .218 DIA 13" LEVER 200 CYCLES/MIN 11" STROKE. SLOW AIR SLOT IN H.P. RESTRICTION. .218 Top Right Graph: LBS/D" 800, 600, 400, 200 18° C 62° C HIGH PRESSURE 55/60 LOADS STAGGERED RESTRICTIONS IN H.P. .218 DIA 13" LEVER 200 CYCLES/MIN 11" STROKE. SLOW .218 Middle Section: LOW PRESSURE d = .125 D = .750 55/60 LB LOADS - 13" LEVER - STAGGERED ORIFICES. 200 R.P.M. 7" STROKE. AIR BUBBLES TRAPPED? HIGH PRESSURE E = .200 .212 .100 55/60 LB LOADS - 13" LEVER - STAGGERED OR'S 200 R.P.M. 7" STROKE. .500 .150 .218 DIA 55/60 LB LOADS - 13" LEVER - STAGGERED RESTRICTIONS. 200 R.P.M. 3-7" STROKE. Bottom Section: 1" = 332 LB/D" H.P. 18° C 61° C S.R. L.P. 18° C 61° C S.R. LOW PRESSURE. 17°C 58°C HIGH PRESSURE. 17°C & 61°C S R ONE LOW PRESSURE PASSAGE IN PISTON COMPLETELY BLOCKED OFF. | ||