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).
Experimental testing log for various aircraft engines, detailing tests and their status.
| Identifier | ExFiles\Box 155\2\ scan0343 | |
| Date | 19th March 1941 | |
| No. 2074. EXPERIMENTAL TESTING Date :- 19.3.41. 1315 TEST BED. | ENGINE. | TEST TAKEN ( 18. 3. 41 ) | REMARKS. 1. | Merlin XX. 10235 | Rigging prior to continuation of carburetter development tests. | 7. | No engine. | 8. | Merlin XX. 3447. | 50 hrs. emergency boost test. | 4th 10 hrs. completed at max. climbing conditions, 2850 RPM. + 9 lb/sq.in. boost. 9. | Repairs to test bed. | 22. | Vulture II.No.18. | Air intake and oil system investigations. | 29. | Exe D.6. | 2 hrs. acceptance test completed. | Oil cons. - 38 and 31 pts/hour. Sinfin. Test Bed 1 | Griffon II.No.22. | 114 hrs. development test in progress. (coolant 70% Glycol 30% Water) | 4 hr. of 1st 10 hrs. completed at 2400 RPM. + 7 lb/sq.in. boost. Test Bed 2 | Griffon II. No.20 | Carburetter development tests in progress. | Hangar A | Griffon II. No.14 | 114 hrs. development test in progress. | Carrying out vibration tests. 73 hours of schedule completed. Hangar B | No engine. | | ||