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Prevent closing of elevator doors when passengers approach, stand near or at the door edge, even from a flat angle. 2.5 cm from elevator cabin. 3.0 cm from elevator lobby. 50 cm for door horizontal sensing. 1.8 m for door vertical sensing. Should not fail if any fail-safe related to safety device fails.
Many regional trains in Germany come with platform gap fillers, such as the Bombardier Talent 2. [1] On subway networks, they have also become more common, as evidenced by the Nuremberg U-Bahn whose 1970s first generation VAG Class DT1 do not have them but whose VAG Class DT3 of the 2000s and 2010s and VAG Class G1 of the 2020s come equipped with automatic gap fillers.
The cost would be around $31.7 million to install, plus $5 million in annual maintenance costs. [157] Since the clocks are based on the Transit Wireless Wi-Fi, installation of each set of displays would cost $211,000 at every aboveground station (which did not have Transit Wireless as of 2016 [update] ) and $54,000 at every underground station ...
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A paternoster in Prague Paternoster elevator in The Hague, when it was still in operation. A paternoster (/ ˌ p eɪ t ər ˈ n ɒ s t ər /, / ˌ p ɑː-/, or / ˌ p æ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping.
Aircraft wing leading-edge extensions – annotated. A leading-edge extension (LEX) is a small extension to an aircraft wing surface, forward of the leading edge. The primary reason for adding an extension is to improve the airflow at high angles of attack and low airspeeds, to improve handling and delay the stall. A dog tooth can also improve ...
window detector circuit diagram. A window detector circuit, also called window comparator circuit or dual edge limit detector circuits is used to determine whether an unknown input is between two precise reference threshold voltages. [1] It employs two comparators to detect over-voltage or under-voltage. [2]
Analysts noted that the J-20's airframe employs a holistic approach to reduce its Radar cross-section (RCS), uniquely combining canard wings with leading edge root extensions (LERX). [ 30 ] [ 13 ] The chined forebody, modified radar radome , and electroconductive canopy [ 13 ] use a stealth shaping, yielding signature performance in a mature ...