4 ms·
IIRC, they used a turbo supercharger system that had multiple stages that can be enabled at different altitudes.
by hangonhn 6y ago
IIRC, they used a turbo supercharger system that had multiple stages that can be enabled at different altitudes.
- jabl 6y agoIIRC the allies generally used multistage superchargers. AFAIU they were automatically engaged, presumably by some valve that was activated due to the drop in boost pressure as the plane climbed, or such. The DB 60X engines that powered the German Bf 109 had an ingenious system with an oil filled clutch, where depending on the oil level there was a differing amount of slip. So they got an optimal level of boost pressure at any altitude (up to the limit where the supercharger was full on, of course).