Warum frieren Flugzeuge bei −60 °C nicht ein?

Why don't airplanes freeze at -60°C at altitudes of over ten kilometers? This video shows how fuel, wings, engines, and windows survive temperatures in which any ordinary technology would fail. At cruising altitude, the air is colder than the coldest inhabited place on Earth. Despite this, the kerosene remains liquid, the wings ice-free, and the cockpit windows clear. The trick lies in the interplay of several mechanisms: The aircraft generates heat through its speed, it utilizes cold-resistant materials and the hot bleed air from its engines – and the greatest danger is not the ice on the wing, but the invisible water in the fuel tank. ...] What you can expect in this video: Why it's about -56°C at an altitude of approximately 11 km – and why the ground temperature doesn't play a role How flying fast actually warms the aircraft skin (aerodynamic heating) Why the coldest altitude is the least likely to ice up How kerosene, heat exchangers, and additives keep the fuel liquid What really happened in the British Airways Flight 38 disaster – when ice in the tank disabled two engines The added value: vivid physics and technology behind an everyday flight – knowledge that replaces the fear of icy altitudes with understanding. Sources & further links: British Airways Flight 38 – when ice in the fuel throttled both engines (Wikipedia): https://de.wikipedia.org/wiki/British... Kerosene / Jet A-1 – freezing point at −47 °C and additives against icing (Wikipedia): https://de.wikipedia.org/wiki/Kerosin Aircraft de-icing – glycol, holding time and de-icing on the ground (Wikipedia): https://de.wikipedia.org/wiki/Flugzeu... How aircraft fight icing in the air – bleed air and electric heating mats (FLUG REVUE): https://www.flugrevue.de/eiskratzen-i... AAIB final report on BA 38 – the role of the fuel-oil heat exchanger (aero.de): https://www.aero.de/news-9683/British...