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Corona: Merkel: Auf gutem Weg, aber rettendes Ufer noch nicht erreicht
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Corona: Merkel: Sorge vor Indien-Mutante – Öffnungen sollten gut durchdacht werden
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When jet engines fall apart, aircraft must stay intact dw.com 22/02/2021 Andreas Spaeth
Two jet engine explosions in one day point to potential dangers looming underneath the wings of aircraft. But Andreas Spaeth says planes must be capable of withstanding such damage. © picture-alliance/dpa Jet engines undergo regular checks by operators
The long fan blades are made of titanium, the hardest metal available. The funnel-like blades let as much air as possible as efficiently as possible into the turbine where it gets heated up, creating propulsion.
In some engine types, the fan blades are hollow inside with a view to saving weight. The tips of the fan blades, usually between 22 and 38 per engine depending on the class of aircraft, rotate with supersonic speeds inside the inlets. Especially on takeoff, such huge high-tech propulsion devices for wide-body aircraft run at full throttle to lift off aircraft weights of 250 tons or more.