ВНИМАНИЕ! На форуме начался конкурс - астрофотография месяца ОКТЯБРЬ!
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не увидел , странно, ну да ладно удалил. это контролируемое "обрушение" . очевидно всем, телескоп старый. теперь РАТАН 600 типа самый "крутой"
Тут есть видео https://www.bbc.com/russian/media-55193475
дирижабль точно бы поднял
Сейчас конспирологи придумают что его взорвали дабы не принять сообщение от флотили инопланетян летящих на Землю, ахаха.
в порядке грустной шутки (из чата болгарских ЛА):видать предстоит нашествие пришельцев, вот ихние диверсанты и поработали...
явно при проектировании просчет был.
Печальное зрелище Вообще такая глупость, можно было подцепить платформу с вертолета или дирижабля и починить.
Непонятно, при проектировании предусматривали замену тросов?
Понятно, конструкция тяжеленная слишком, а как же её поднимали?Может есть где почитать про постройку подробно?
The feed platform, suspended 150 m above the ground, had a total weight of 550 tons. (It later was increased to about 900 tons after the Gregorian upgrade) It is suspended from four three-inch diameter cables that run from each platform corner to the top of the corresponding tower. Five three-and-a-quarter inch diameter cables run from the top of the towers to the concrete anchors resting on the ground. (The reason for the different size and number of the cables is related to the different angle at which they carry the loads).Visitors to the Observatory often wonder how the platform was raised inthe first place. In fact, it was assembled at the center of the bowl. A cable spider was strung between the towers which supported a block and tackle to raise the platform. The blocks were made of 100 tons of concrete embedded in the ground.The triangular platform was raised with pulleys attached to auxiliary cables strung between the three towersThe platform lift at the end of October 1962 proceeded at about 50 feet per hour during which a delicate balance was kept between the backstays and the spider and main cables so that tower deflection stayed within the permissible limits of ±2 inches. This was the most critical operation of the entire project and took three days. After the lift, the three inch diameter main cables, which had been hanging from the three corners of the platform, were attached to the tops of the towers. Next, the ring girder, holding the azimuth track and the feed arm were raised to the platformOn March 3, 1963, the azimuth arm was on its way to the platformThe contractor for the reflector proceeded with construction after the platform was in place. The reflector consisted of 16 x 19 gauge standard inch square mesh soldered at every joint and held by a network of cables suspended from the concrete rim of the reflector. Three hundred and eighteen three-eighths inch cables run east-west, and these are stabilized by 10 (increased to 39 after thefirst upgrade) one and one quarter inch cables running north-south. These are tied to concrete blocks on the ground to provide the required circular profile (since a free hanging cable will have the form of a catenary – not a circle).The reflector is a portion of a sphere of radius 870 feet (265 m), has a surface area of 18 acres, and had a total weight of 207 tonsJune 13, 1963, the mesh of the reflector is placed over the supporting cables.
Цитата: petrovich1964 от 05 Дек 2020 [08:44:42]Непонятно, при проектировании предусматривали замену тросов?На видео вполне видно, что крепёж на пять тросов. Т.е. запросто можно было поставить новый а потом убрать старый.
Часть тросов лопнула ещё в августе.