Lurssen door

grabcad

The solution uses the principle of the rototlaslating doors that minimizes the area of the door exposed to the force of the wind. The hinge is hidden behind the ceiling. I’ve mounted between the door and the frame a “steering damper” like the one of the motorcycles that opposes no resistance to the motion at low translating speeds and a high resistance to the high speeds. That will result in the sequent conditions: - if the wind is strong (high speed of the door) the damper goes into action and the door is guided till it’s 90 degrees where a neodymium magnet hold it into position. To close the door is necessary to contrast only the force exerted by the magnet (and the wind if still present) - if the wind is not strong then the door will be easily guided by the user till it’s 90 degrees and hold into position with the magnet as told before. The door can be opened both sides that means that it can be used in all conditions. In case of frontal wind (supposed a maximum speed of 100 knots) the force acting on a normal door makes it impossible to open from a normal human being (the load to contrast is too high) but instead with the system I propose it will be possible to open it easily because the momentum applied on the door coming from the wind is almost zero. This can really do the difference in terms of safety onboard for example in case of fire. Here the links to youtube videos to show how it works: http://youtu.be/pnaSxay_gP0 http://youtu.be/oWUE2-y6kNw http://youtu.be/81A04Hf2Jjo http://youtu.be/TVG-o5UWOAk