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).
Blueprint showing graphs and diagrams analyzing the variation in performance of a staggered orifice system caused by temperature changes.
| Identifier | ExFiles\Box 52\1\ Scan018 | |
| Date | 1st June 1928 guessed | |
| STAGGERED ORIFICE. VARIATION OCCASIONED BY TEMPERATURE. Top Left Graph: LBS/D" 800, 600, 400, 200, 0 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 LOW PRESSURE. d=.125 D=.750 .212 Top Right Graph: LBS/D" 800, 600, 400, 200, 0 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 Center Section: AIR BUBBLES TRAPPED? HIGH PRESSURE C E=.200 .100 .218 DIA .500 .150 Bottom Text Row: 55/60 LB LOADS - 13" LEVER - STAGGERED ORIFICES. 200 R.P.M. 7" STROKE 55/60 LB LOADS - 13" LEVER - STAGGERED OR'S 200 R.P.M. 7" STROKE 55/60 LB LOADS - 13" LEVER - STAGGERED RESTRICTIONS. 200 R.P.M. 3.7" STROKE Bottom Left Graph: 1" = 332 LB/D" H.P. 18° C 61° C S.R. Bottom Middle Graph: 1" = 332 LB/D" L.P. 18° C 61° C S.R. Bottom Right Graphs: LOW PRESSURE. 17°C 58°C S.R. HIGH PRESSURE. 17°C & 61°C S.R. Bottom Title: ONE LOW PRESSURE PASSAGE IN PISTON COMPLETELY BLOCKED OFF. | ||