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).
Comparison table of radiator matrix specifications including heat dissipation, weight, critical air temperatures, and cost.
| Identifier | ExFiles\Box 150\3\ scan0099 | |
| Date | 21th December 1936 guessed | |
| MATRIX TABLE COLUMN HEADERS: MATRIX HEAT DISSIPATION PER SQ FT FRONTAL AREA HEAT DISSIPATION PER LB. WT. CORRESPONDING CRITICAL AIR TEMPS °C WT OF MATRIX LBS COST OF MATRIX £ - S - d ROW 1: Matrix: 20/25 RR HEX (LATEST TYPE) 3.250" DEEP Heat Dissipation per Frontal Area: H₁ Heat Dissipation per Lb. Wt.: H₂ Critical Air Temps: 32.5 Wt of Matrix: 36.5 Cost of Matrix: 4 - 12 - 5 ROW 2: Matrix: 25/30 MARSTON MK V 2.825" DEEP (PRESENT STD) Heat Dissipation per Frontal Area: 1.29H₁ Heat Dissipation per Lb. Wt.: 1.20H₂ Critical Air Temps: 48.0 Wt of Matrix: 39.2 Cost of Matrix: 3 - 12 - 6 ROW 3: Matrix: 25/30 MARSTON MK VI 2.050" DEEP LIGHTENED CONSTRUCTION Heat Dissipation per Frontal Area: 1.40H₁ Heat Dissipation per Lb. Wt.: 1.76H₂ Critical Air Temps: 52.0 Wt of Matrix: 29.0 Cost of Matrix: 3 - 8 - 0 ROW 4: Matrix: PII RR HEX (LATEST TYPE) 4" DEEP Heat Dissipation per Frontal Area: H₃ Heat Dissipation per Lb. Wt.: H₄ Critical Air Temps: 35.0 Wt of Matrix: 50.0 Cost of Matrix: 7 - 13 - 4 ROW 5: Matrix: PIII MARSTON MK VI PRESENT STANDARD Heat Dissipation per Frontal Area: 1.21H₃ Heat Dissipation per Lb. Wt.: 1.15H₄ Critical Air Temps: 30.0 Wt of Matrix: 52.7 Cost of Matrix: 5 - 11 - 0 ROW 6: Matrix: PIII MARSTON MK VI LIGHTENED CONSTRUCTION Heat Dissipation per Frontal Area: 1.21H₃ Heat Dissipation per Lb. Wt.: 1.37H₄ Critical Air Temps: 30.0 Wt of Matrix: 44.3 Cost of Matrix: 5 - 4 - 0 HANDWRITTEN NOTES (in lower empty cells): - WRAITH - CONVERSION TO 20/25 & 25/30 MK VI MATRIX - Re-tube? T2 (any) - CENTURY III - MATRIX 25Lbs. 3-3-6 - REPAIR 30Lbs. 2-1-7 - REPAIR 26Lbs. 3-6-8 | ||