Hello, folks,
As noted in another thread, the Melrlin 45 was over-boosted in 1942 (+16 lbs/sq in, previously only 9,3 lbs/sq in). Flight tests with over-boosted engines were conducted from July to September of 1942. So, my questions are: was it feasible before that date? Does anybody know what major/minor changes on the engine were undertaken?
The benefits of the over-boosting were noticeable mostly at lower altitudes, where that improvement was feasible anyway. The full throttle height for that rating (noted as 'combat rating') was, on climb, 8800 ft, and, at max speed, 13000 ft. The speed gain was, on 13000 ft, 35 mph, and the RoC was increased, at 8800 ft, some 1050 ft/min (now being 3710 ft/min at that altitude).
As noted in another thread, the Melrlin 45 was over-boosted in 1942 (+16 lbs/sq in, previously only 9,3 lbs/sq in). Flight tests with over-boosted engines were conducted from July to September of 1942. So, my questions are: was it feasible before that date? Does anybody know what major/minor changes on the engine were undertaken?
The benefits of the over-boosting were noticeable mostly at lower altitudes, where that improvement was feasible anyway. The full throttle height for that rating (noted as 'combat rating') was, on climb, 8800 ft, and, at max speed, 13000 ft. The speed gain was, on 13000 ft, 35 mph, and the RoC was increased, at 8800 ft, some 1050 ft/min (now being 3710 ft/min at that altitude).