| has gloss | eng: GM-1 (Göring Mischung 1), colloquially known as Haha-Gerät (Ha-Ha Device) was a system for injecting nitrous oxide (laughing gas) into aircraft engines that was used by the Luftwaffe in World War II to boost the high-altitude performance of their aircraft. A different system for low-altitude boost known as MW 50 was also used, although GM-1 and MW 50 were rarely used on the same engine. However, this was not a nitrous-oxide system, but a Methanol-water injection system, which injected a mixture of methanol and water into the cylinders to cool the mix. Cooling causes the air to become denser, therefore allowing more into each cylinder for a given volume. This is the same principle that intercoolers and cold-air intakes work on. |