Nothing creates a cozy environment quite as well as a roaring fireplace, so the German aviation company Lufthansa Technik has produced a concept for a flame-free fireplace that can be installed in a private jet. It looks and sounds like a real fireplace and meets the certification requirements of international aviation authorities. It combines a water mist with an illuminated simulation of burning wood, creating a realistic three-dimensional illusion of a crackling fire. The heat, sound, and intensity of the f…