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 of fuel performance (D.T.D.224, D.T.D.134, D.T.D.230) in Kestrel and Goshawk engines using evaporative cooling.
| Identifier | ExFiles\Box 27a\4\ Scan211 | |
| Date | 14th September 1933 | |
| -3- Hs{Lord Ernest Hives - Chair}/Ing.R/MJ.14.9.33. Cont'd.{John DeLooze - Company Secretary} evaporatively cooled instead of water cooled. RESULTS. (1) D.T.D.224. Comparison between this fuel and D.T.D.134 at F.S. Kestrel rating - 480 BHP/2250 RPM. -1/2 lb/sq.in. at 11,500 ft. running evaporatively cooled. Condition. Fuel. RPM. Obsd. BHP. Boost lbs/sq.in. Fuel Cons. WBHP. Detn. Flt. Rated Boost. } 2250 418 -1/2 .545 2 - 3 Take off RPM. } DTD.134. 1850 414 +1.75 .503 20 - 25 & Boost. } Rated Boost. } 2250 410 -1/2 .547 1 - 2 Take off RPM. } DTD.224. 1850 417 +1.75 .508 10 - 15 & Boost. } Curve 4437. shows consumption loops taken with DTD.224 and DTD.134 fuels. It will be seen that the calorific value of the former is slightly lower. (2) D.T.D.230. (a) Calibration of the Fuel. Comparison between the F.S.Kestrel (rating 480 BHP/ 2250 RPM. -1/2 lb/sq.in. at 11,500 ft.) on DTD.134 and the F.S. Goshawk (rating 600 BHP./2600 RPM./+1 1/2 lbs/sq.in. at 12,000 ft.) on DTD.230, both evaporatively cooled. Condition. Fuel. RPM. BHP. Boost lbs/sq.in. Fuel Cons. WBHP. Detn. Flt. Kestrel. Rated Boost. } 2250 418 -1/2 .545 2 - 3 Take off speed } DTD.134. 1850 414 1.75 .503 20 - 25 & Boost. } Goshawk. Rated Boost. } 2600 538 +1 1/2 .535 0 Take off speed } DTD.230. 2180 540 +3.0 .512 0 & Boost. } Limiting Condi- } 2180 617 +5.0 .491 1 - 2 tions at Gos. } Take Off RPM. } As in the case of DTD.224 a value for the calorific | ||