You know what would make flying more enjoyable? More beer!
Dutch airline KLM feels the same, because they recently announced plans to bring a beer tap onboard their flights, giving their passengers the pub experience at 35,000 feet. KLM initially planned to launch their beer tap service this month, but had to postpone it to next month in order to secure the necessary safety certificates.
The reason being is that creating a beer tap that functions at high altitude was no easy task. The decreased air pressure means that traditional taps wouldn’t work, instead only dispensing foam. Pressurised taps would work, but typically use CO2 canisters, which are banned on airplanes. Beer taps that use air pressure do exist, but were too large to fit inside a catering cart. To solve this problem, the engineers at Heineken decided to remove the cooling apparatus from a pressurised tap, and opted to turn the entire cart into a giant thermos to keep the beer kegs cold. Genius.
The resulting tap is small enough to use on an airplane, and apparently delivers the same taste as on the ground, so you can enjoy some crisp, cold draught beers while enduring economy class.
Those Dutch are clever chickens!