Navy day China domestic carriers can you launch? Unfortunately the tide will not answer | | | tide _ an aircraft carrier of the Navy news
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[Global network global times, Guo Yuan Dan military reported on April 19] Although it has not officially announced, but China's first China-made aircraft carrier "will be launched on April 23" message appeared to have been identified by network and members of the media at home and abroad. However, Chinese military experts have told the global times reporters on April 23, Navy aircraft carrier water section-not the best "window period", because "the tide does not comply." Taking into account hydrological environment and other factors, for a large carrier ships, must meet certain criteria to safe water and available water depth can be safely launched.
Large ship launching damping effect
Since last week, there are peers in the media on travel arrangements on the Chinese Navy's day, go to Dalian to a "date", "appointment" is China's first China-made aircraft carrier. "April 23 Navy aircraft carrier to launch day, Chinese-made" message don't know comes from, but a series of clues all point to this day. Is most directly related, hyped on the Internet last week of a "China's first aircraft carrier launched a souvenir cover", its impressively on a commemorative stamp is printed with "Liaoning, Dalian, April 23". Synchronize with is that of military enthusiasts on this Chinese-made carrier also confirmed reports in real time. Last I heard the aircraft carrier ship island has been painted with primer, aircraft of the whole painting work has been basically completed. In addition, Hu Wenming, Chairman of shipbuilding industry in January within the special inspection of shipping group trip finds more media on the progress of key projects, "launched on April 23 news seems to have assured". On April 15, Hu Wenming, accompanied by Central Military Commission Zhang Youxia, Minister of development, equipment to inspect the shipbuilding industry Research Institute. In fact, about when the Chinese-made aircraft carrier launched the latest official news, in March China's Defense Ministry regular press conference of the Chinese Defence Ministry spokesman Wu Qian replied, "I believe it will not keep you waiting." Such circumlocution seem to time node was expected by April 23.
As we all know, the carrier's build process is determined by many factors, including industry, scientific and technological strength, and so on, described the carrier as "cutting-edge" technology is no exaggeration. So "Advanced" aircraft carriers launching time have no technical requirements? The answer is Yes. Well-known carriers, China expert Li Jie 17th reporter for global times, said in an interview, large ships into the water taking into account hydrological and environmental factors, especially the influence of boomers. To ensure water safety, adequate water depth, the harder the security. Like a ship draws 10 meters, sufficient theoretical depth of 11 meters, but because the vessel may pitch, combined with the force of the waves, you may need Seventeen-Eight can.
A 18th stakeholders familiar with the situation told the newspaper reporters, Dalian shipyard, the water is not deep, tides have a great influence on carrier operations. Another one anonymous of professional people also identity this views, he told global Times reporter: "in dry dock in the of large ship water Shi on at of security depth has is high of requirements, dang security draft and available depth meet must standard Hou, large ship to security water, and available depth except and dock of depth about outside, and at of tidal size also has is big of associated, if tide smaller or up not to requirements, large ship is cannot security water. ”
April 23 is not tide day
According to the introduction, the tides are a natural phenomenon in the coastal area, sea levels in the body (mainly the Moon and the Sun) under the action of tidal force produced by the cyclical movement. Twice-daily fluctuation, there is fluctuation. In accordance with the General rules, regardless of which type, there are spring tides and NEAP tides. In General early Lunar 15 or 15 a month within the next two or three days, the spring tide occurs once, when the tide was high, end up with the lowest. At the beginning of Lunar monthly 83 or 23 within the next two or three days, each with a NEAP tide. Spring tide NEAP tidal range for each area are not the same, large tidal range of a few meters, only dozens of centimeters of the small tidal range.
April 23 is the lunar calendar March 27, is not close to the NEAP tide day day. These professionals told the global Times newspaper said: "the first China-made aircraft carrier launch is a major event, except that it itself has the condition of the water, how to ensure that security became the focus. It also designed some of the indicators and parameters also need the actual inspection, such as Light Displacement maximum safe draught when water is needed for the actual authentication. So carriers should be optional tide water, to ensure safe and reliable. April 23 is not a tide, if not the best ' window period '. ”
According to the law the tides, concluded by April from the newspaper went to press this time have a NEAP and spring tide. April 19 is the new March 23, from 20th to 22nd May is the NEAP tides. April 26 is the lunar new year early April, from 27th to 29th is the tide. If the carrier launch day in April, from April 27 to 29th, is the most suitable carrier launching day. Otherwise the tide will have to wait until the next day.
"Tribute project" stale thinking
In addition, also could determine whether the carrier will launch early sign is when to fly the flag. Water to large ships held a grand ceremony, celebration full of lamps is unique to warships bearing the full flag, large ships fly the flag often required one day in advance, which is judging carrier when it launched the most simple and intuitive judgment.
Launch date of the addition is ignored by the outside world to be scientific and technical, on April 23, the Navy section and a symbol of China's first China-made aircraft carrier tied together is a kind of old thinking. The past, every major holiday, there are areas of significant projects to chosen before and after the Festival to be "gifts." But in fact, this "tribute project" does not appear in China's aircraft carrier construction. July 27, 2011 China's Defense Ministry confirmed that China is using for the first time to transform a waste carrier, used for scientific experiments and training. There was media speculation in order to gift to the Army Day, the carrier will be held on August 1, the first sea trial, but in fact, China's first aircraft carrier sea trial on August 10.
Told the global times reporters interviewed several people in the industry said that aircraft carrier construction more scientific-oriented construction, more pragmatic, scientific spirit, in accordance with the progress in project implementation and conditions in order, but not practical, risk the water.
>: Tang Xiang Changming SN123
Article keywords:Navy aircraft carrier the tides
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海军节那天中国国产航母能下水吗？可惜潮汐不答应|海军|航母|潮汐_新闻资讯
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[环球网军事4月19日报道 环球时报记者 郭媛丹]虽然官方并未发布消息，但中国首艘中国国产航母“将在4月23日下水”的消息似乎已被网络和国内外媒体人士认定。不过，中国军事专家近日接受《环球时报》记者采访时表示，4月23日海军节当日并不是航母下水最好的“窗口期”，因为 “潮汐不答应”。考虑到水文环境等因素，对于航母这样的大型船舶来说，必须要安全吃水和可用水深满足一定标准才可安全下水。
大型船舶下水受潮期影响
从上周开始，就有媒体同行在安排行程要在中国海军节当天去大连赴一场“约会”，“约会”对象是中国首艘中国国产航母。“4月23日海军节当天中国国产航母要下水”的消息不知道从何而来，但一系列的线索都指向这个日子。最有直接关联的是，上周在网上热炒的一个“中国首艘航空母舰下水纪念封”，其纪念戳上赫然印着“辽宁·大连4月23日”。与之同步的是，军迷对这艘中国国产航母的实时报道也在进一步印证。最新的消息是航母舰岛已涂上底漆，整个航母的涂装工作已经基本完成。此外，中船重工董事长胡问鸣一月之内连续到大船集团专项检查重点工程进展的行程更让媒体认定，“4月23日当天下水的消息看来已经确定无疑了”。4月15日，胡问鸣还陪同中央军委委员、装备发展部部长张又侠到中船重工某研究所视察。实际上，关于中国国产航母何时下水最近一次的官方消息，是3月份中国国防部例行记者会上中国国防部新闻发言人吴谦的回答，“我相信不会让大家久等”。这种婉转的说法似乎也让4月23日成为外界期待的时间节点。
众所周知，航母的建造进程是由许多因素决定的，包括工业基础、科技实力等等，将航母形容为“高精尖”的科技成果毫不夸张。如此“高精尖”的航母下水的时间有没有技术要求？这个答案是肯定的。中国知名航母专家李杰17日接受《环球时报》记者采访时表示，大型船舶下水要考虑到水文环境等因素，尤其是潮期的影响。为保障下水安全，水深要足够，越深越安全。比如说一条船吃水10米，理论水深11米足够，但因为船舶可能会上下颠簸，加之海浪作用力，可能需要十七八米才可以。
一位了解情况的相关人士18日对《环球时报》记者表示，大连造船厂的水不深，潮汐对航母行动有至关重要的影响。另一位匿名的专业人士也认同这种观点，他告诉《环球时报》记者：“在干船坞中的大型船舶下水时对当时的安全水深有着很高的要求，当安全吃水和可用水深满足一定标准后，大型船舶才能安全下水，而可用水深除了与船坞的深度有关外，与当时的潮汐大小也有着很大的关联，如果潮水较小或达不到要求，大型船舶则不能安全下水。”
4月23日恰恰不是大潮日
根据介绍，潮汐是沿海地区的一种自然现象，指海水在天体（主要是月球和太阳）引潮力作用下所产生的周期性运动。一般每日涨落两次，也有涨落一次的。按照一般规律，不论哪种类型，皆有大潮和小潮之分。一般而言每月农历初一、十五以后两三天内，各会发生一次大潮，那时潮水涨得最高，落得最低。在每月农历初八、二十三以后两三天内，各有一次小潮。大潮小潮潮差每个海区不一样，潮差大的有数米，潮差小的只有几十厘米。
4月23日是农历三月二十七，不是大潮日而靠近小潮日。上述专业人士对《环球时报》记者表示：“首艘中国国产航母下水是重大盛事，除了它本身具备了下水的各项条件外，如何保证安全就成了重点。同时，它设计的一些指标和参数还需要实际检验，如空载排水量时的最大安全吃水就需要在下水时来实际进行验证。所以航母应该要择大潮日下水，以确保安全可靠。而4月23日恰恰不是大潮日，不是最好‘窗口期’。”
按照潮汐规律，从本报发稿日到4月结束这段时间内各有一次小潮和大潮。4月19日是农历三月二十三，20日至22日会是小潮日。4月26日是农历四月初一，27日至29日都是大潮日。如果说航母下水日定在4月份，那4月27日至29日是最适合航母下水的日子。否则将要等到下一个大潮日。
“献礼工程”已是陈旧思维
除此之外，还能提前判断航母是否会下水的标志是什么时候悬挂满旗。大型船舶下水时要举行隆重的仪式，悬挂满旗满灯是军舰特有的庆典方式，庞大的舰艇悬挂满旗通常需要提前一天进行，这也是判别航母何时下水最为简单直观的判断。
除了被外界忽略的下水日期的科学性和技术性，将4月23日海军节和颇具象征意义的中国首艘中国国产航母捆绑在一起也是一种陈旧思维。过去，每逢重大节庆日，总有一些地方的重大项目要刻意选择在节日前后成为“献礼工程”。但事实上，这种“献礼工程”并没有出现在中国航母建设上。2011年7月27日中国国防部首次确认中国正利用一艘废旧航母平台进行改造，用于科研试验和训练。当时有外媒猜测为了向八一献礼，航母将会在8月1日进行首次海试，但实际上中国首艘航母的海试在8月10日进行。
接受《环球时报》记者采访的几位业内人士都表示，航母建设更注重科学建设，比较务实，讲求科学精神，按照工程实施进展和条件有序开展，而不会不讲究实际，冒着风险下水。
>责任编辑：向昌明 SN123
文章关键词： 海军 航母 潮汐
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