3 ms·
Another design to accomplish this same goal seems to be called the "safety shoe" [1]. I believe this is a horizontal bar placed under the open door which moves
by hlandau 3y ago
Another design to accomplish this same goal seems to be called the "safety shoe" [1]. I believe this is a horizontal bar placed under the open door which moves the airbridge down if it gets too close.
https://www.youtube.com/watch?v=4Ir5b0GzfiE https://www.youtube.com/watch?v=4Ir5b0GzfiE
- supernova87a 3y agoI've wondered what that is when seeing it during boarding! The video doesn't explain anything though... Is it some proximity sensor? How? It doesn't seem to require extremely accurate positioning.
- jffry 3y agoI found a product manual [1] from one manufacturer which describes stepping on it as part of a maintenance test (bottom of page 6), so it seems like some type of switch or pressure. The idea seems to be that if the door touches the top of the sensor, it automatically lowers the jetbridge a few inches to prevent the door from being damaged. And I guess this can happen if the plane is being loaded improperly causing it to shift. [1] PDF, 4MB: https://www.acesincusa.com/wp-content/uploads/2020/07/Safety_Shoe_ProductManual_1v11.pdf https://www.acesincusa.com/wp-content/uploads/2020/07/Safety...
- supernova87a 3y agoOh, I see, thanks for that! Yes it looks like a contact strip sensor kind of thing. I have also noticed in some jet bridges, you will see some kind of air sensor probe on the end of a coiled cord, which is very odd to me that this would inform the operation of the bridge. I can't find a photo of it readily, but it is definitely something I have noticed and puzzled about.
- johnwalkr 3y agoThe wheel is the primary sensor and the safety shoe is a backup.