In the military aviation equipment exported by China in the past two years, the drone is undoubtedly the biggest bright spot. Every once in a while, there will be unexpected news from overseas media. The content is generally "Chinese drones and signed big orders." This momentum has continued in the near future. Hong Kong's "South China Morning Post" quoted the British "Jane's Defense Weekly" report on the 26th that the Chinese drone not only signed a big order, but even the production line will go out of the country together.
"Jane's Defense Weekly" disclosed that as the most important research institution in Saudi Arabia, King Abdulaziz Science and Technology City has signed a cooperation agreement with China Aerospace Science and Technology Corporation, including the introduction of the "Rainbow" series. The content of the machine production line. The report said that Saudi Arabia did not disclose more about the agreement, but quoted the head of the Saudi Aviation Technology Development and Investment Corporation's aviation industry company as saying that his company has been affiliated with China Aerospace Science and Technology Corporation. Aerospace Changzheng International Trading Co., Ltd. signed an agreement to produce military and civilian "Rainbow" drones in Saudi Arabia, which will also be exported to other countries in the Middle East while meeting Saudi Arabia's domestic needs.
During the state visit to Saudi King Salman in the middle of this month, the two countries signed a large order worth 65 billion US dollars covering 35 projects.
The report of Jane's Defense Weekly also said that the Saudi side publicly confirmed in February this year that it had introduced the "Rainbow-4" military drone. The report is based on online photo analysis. The "Rainbow-4" introduced by Saudi Arabia is equipped with a satellite communication antenna. The mounted weapons are mainly AR-1 laser-guided short-range air-to-surface missiles and FT-9 guided bombs.
According to the China Aerospace Aerodynamics Research Institute affiliated to the Aerospace Science and Technology Group of the Rainbow UAV Research Unit, “Rainbow-4†is a large-scale multi-function long-endurance UAV system that can perform battlefield surveillance and information collection. Missions such as communication relays, which also have reconnaissance and strike capability, can be equipped with light-guided weapons, perform military operations such as anti-terrorism operations and no-fly zone patrols, and achieve precise strikes against fixed targets on the ground and low-speed moving targets.
The "Rainbow" series of drones is the best-selling Chinese military drone in the international market. Shi Wen, the chief designer of the "Rainbow" series of China Aerospace Aerodynamics Research Institute, has previously told the media that the "Rainbow" drone has Exported to more than a dozen countries, user feedback is "very good."
The South China Morning Post quoted a person who had worked in the R&D department of the Aerospace Science and Technology Group as saying that China had previously exported the “Rainbow†drone production line to Pakistan and Myanmar, so the future construction in Saudi Arabia will be the third. "Rainbow" overseas production line. The source said that the "Rainbow-4" drone performed well in anti-terrorist missions in Iraq, Yemen, Sudan and Pakistan, which is one of the reasons why Saudi Arabia is so interested in this type of drone.
An anonymous insider told the Global Times reporter on the 26th that China and Saudi Arabia have a good tradition of military trade cooperation, so it is very normal for Saudi Arabia to be optimistic about the Chinese drone system. He said that China and Saudi Arabia should indeed sign the relevant agreement. However, the specific content has yet to be officially released.
According to Chinese aviation equipment experts, China Aerospace Aerodynamics Research Institute is promoting its more advanced "Rainbow-5" inspection and unmanned aerial vehicle to the international market. "Rainbow-5" has a maximum takeoff weight of 3,300 kilograms. It can mount up to 1 ton of weapons per mission and can carry up to 24 air-to-ground missiles. It is called the "arsenal machine" in drones.
brightness
LCD is a substance between solid and liquid. It can't emit light by itself, so it needs additional light source. Therefore, the number of lamps is related to the brightness of the Liquid Crystal Display. The earliest liquid crystal displays had only two upper and lower tubes, the lowest of the popular type was four lamps, and the high-end one was six lamps. The four-lamp design is divided into three types of placement: one is that there is a lamp on each of the four sides, but the disadvantage is that there will be dark shadows in the middle. The solution is to arrange the four lamps from top to bottom. The last one is the "U"-shaped placement form, which is actually two lamp tubes produced by two lamps in disguise. The six-lamp design actually uses three lamps. The manufacturer bends all three lamps into a "U" shape, and then places them in parallel to achieve the effect of six lamps.
Tip: Brightness is also a more important indicator. The brighter the LCD, the brighter the LCD, it will stand out from a row of LCD walls. The highlight technology we often see in CRT (ViewSonic is called highlight, Philips is called display Bright, BenQ is called Rui Cai) is to increase the current of the shadow mask tube to bombard the phosphor to produce a brighter effect. Such a technology is generally traded at the expense of image quality and the life of the display. All use this The products of this kind of technology are all bright in the default state, you always have to press a button to implement, press 3X bright to play the game; press again to turn to 5X bright to watch the video disc, a closer look is blurred, you need to watch The text has to be honestly returned to the normal text mode. This design actually prevents you from frequently highlighting. The principle of LCD display brightness is different from that of CRT. They are realized by the brightness of the backlight tube behind the panel. Therefore, the lamp has to be designed more so that the light will be uniform. In the early days when selling LCDs, it was a great thing to tell others that there were three LCDs. But at that time, Chi Mei CRV came up with a six-lamp technology. In fact, the three tubes were bent into a "U" shape. The so-called six; such a six-lamp design, plus the strong luminescence of the lamp itself, the panel is very bright, such a representative work is represented by VA712 in ViewSonic; but all bright panels will have a fatal injury , The screen will leak light, this term is rarely mentioned by ordinary people, the editor personally thinks it is very important, light leakage means that under a completely black screen, the liquid crystal is not black, but whitish and gray. Therefore, a good LCD should not emphasize brightness blindly, but more emphasis on contrast. ViewSonic's VP and VG series are products that do not emphasize brightness but contrast!
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