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).
Graph plotting hydraulic restriction characteristics of a parallel square tube radiator against engine RPM.
| Identifier | WestWitteringFiles\U\August1930-November1930\ Scan120 | |
| Date | 14th October 1930 | |
| HYDRAULIC RESTRICTION OF [] TUBE RADIATOR RAD. E.{Mr Elliott - Chief Engineer} 77675 TUBES E.{Mr Elliott - Chief Engineer} 81385 6 m/m PARALLEL SQUARE. DELIVERY GAL/MIN ENGINE R.P.M. SUCTION SIDE OF PUMP LBS/□" PRESS. DEPN SUCTION SIDE OF PUMP. 6/7 1/2 TUBES ON SAME ENGINE | ||