Tiềm lực quân sự Hoa Kỳ - Phần 3

Ặc ăc, em chết vì bác AT rùi, yêu power của Mỹ rùi. Để em gửi cho bác cái link này cho mọi người xem technician của US lấy references từ đâu
http://science.howstuffworks.com/photonic-mast.htm/printable

Trời ơi là trời.... Tăng rống .... rồi đến tăng rồng
Chết mất vì sợ bác AT
http://science.howstuffworks.com/photonic-mast.htm/printable

Introduction to How Photonic Masts Will Work
Crews onboard a submarine can spend months at sea, submerged, with no way to catch even a single glimpse of sunlight -- the only window to the outside world is the eyepiece of the periscope in the control room. The periscope is a fundamental piece of submarine equipment, and provides valuable visual data during battle and in determining the ship''s position.
Despite its valued service for more than 80 years, the U.S. Navy will soon say "so long" to the conventional periscope. In 1999, construction began on a new breed of attack submarines that won''t have a periscope. Instead, these new Virginia-class submarines will use non-penetrating imaging devices called photonics masts to perform surveillance tasks. Each new submarine will be equipped with two photonics masts, which are basically arrays of high-resolution cameras that capture and send visual images to flat-panel displays in the control room.
Photo courtesy Naval Sea Systems Command
The photonic mast, seen here in testing, is one of the revolutionary design changes incorporated into a new type of U.S. submarine.
In this e***ion of How Stuff Will Work, you will learn the basics of a conventional periscope and how photonics masts will revolutionize the way submarines see the world around them.
Dancing with the Gray Lady
The orders "down periscope" and "up periscope" are, for most of us, completely tied in with our notion of submarines. These are phrases that we''ve heard countless times in submarine movies, in which there''s usually a dramatic scene of a submarine captain hanging onto the handles of a periscope, looking out at the enemy above the water. Standing watch at the periscope like this is called "dancing with the gray lady."
Photo courtesy U.S. Navy
A petty officer conducts a periscope sweep prior *****rfacing. Photonics masts will replace conventional periscopes.
A periscope''s basic purpose is to allow submarine crews to see objects above the water while the ship remains submerged. A simple periscope can be constructed out of a vertical tube with mirrors placed at a 45-degree angle at the top and bottom of the tube. These devices basically collect light from an image and direct that light from one mirror at the top of the periscope to the mirror at the bottom of the periscope. Of course, modern submarine periscopes are more sophisticated than that.
Periscopes on submarines may be as long as 60 feet (18 m). When a submarine is submerged to a depth that is equal to the length of the periscope tube, it is considered to be at periscope depth. Because of the length of these periscopes, having two mirrors attached inside the ends of the periscope is not a sufficient method for carrying an image from the top window to the eyepiece.
In a submarine periscope, prisms are used in place of mirrors at the top and bottom of the periscope tube, aligned parallel to each other. The top prism collects light from an image and bounces that light, through as series of lenses and two telescopes that run the length of the periscope tube, down to a second prism. This prism at the base of the tube reflects the light into a secondary tube, which consists of two lenses, and then through the eyepiece.
Periscopes are contained inside a periscope well within the ship''s sail. On submarines, "sail" is a term often used to describe the conning tower. This tower is the cylindrical chamber attached to the top of the submarine. It is tra***ionally located directly above the control room. The well runs from the top of the sail to the bottom of the ship. A periscope can rotate to give the operator a 360-degree view of the ocean surface. If there is an object (or enemy ship) that needs to be avoided, the submarine will dive. Once below periscope depth, sonar typically is used for navigation.
The photonics mast will allow the control room to be located on the roomier second deck.
Newer submarines are equipped with two types of periscopes, one on the right (starboard) side and one on the left (port) side. For example, the USS Springfield has a Type 2 attack scope on the starboard side and a Type 18 search scope on the port side. The Type 18 scope is limited to operations in the daylight. It takes photographs with a 70-mm digital camera and then displays those images on a television monitor. Some periscopes also have night vision, a still camera, a video camera and can magnify images being viewed.
Virginia''s New Look
There are two problems with conventional optical periscopes. First, a periscope well runs the entire height of the ship to house the periscope, and its size restricts the arrangement of the sail and interior compartments. The second problem is that periscopes can accommodate only one person at a time. The Navy has developed a new AN/BVS-1 photonics mast to solve these two problems. The Virginia-class attack submarine, scheduled for debut in 2004, will be the first submarine equipped with photonics masts.
Photo courtesy U.S. Navy
A computer-generated image of what the new Virginia-class attack submarines will look like.
The photonics mast provides the imaging, navigation, electronic warfare and communications functions of a conventional optical periscope, according to U.S. Navy documents. Each Virginia-class submarine will have two photonics masts, which do not penetrate (retract into) the ship''s hull. The mast will rise like a car antenna, in a telescopic motion.
Electronic imaging equipment will replace the prisms and lenses of the old optical periscopes. The heart of the system is the sensor unit that will protrude through the water. This multiple electro-optical sensor is located in a rotating head. The masts are equipped with three cameras, including a color camera, a high-resolution black-and-white camera and an infrared camera, to provide imaging for the submarine. There is also a mission critical control camera in a separate, pressure-proof and shock-hardened housing, and an eyesafe laser range finder that provides accurate target ranges and aids in navigation.
Photo courtesy Naval Sea Systems Command
Components of the AN/BVS-1 photonics mast
The periscope well that houses these masts will be contained only in the ship''s sail. The smaller size of the periscope well allows for more freedom in determining the location of the ship''s control room. With conventional periscopes, the control room had to be placed in the cramped upper deck. In the new Virginia-class submarine, the control room will be located on the wider second deck and will have a more open layout.
The photonics mast will allow the control room to be located on the roomier second deck.
Images from the photonics masts are sent via fiber optics to two workstations and a commander''s control console. The two photonics masts are controlled via joystick from any of these stations. Each station contains two flat-panel displays, a standard keyboard and a trackball interface. Images are recorded on both video cassette and CD-ROM.
The photonics mast is the latest tool to be added to the United States'' electronic-warfare arsenal. This new technology will make the Virginia-class submarines the most advanced and automated submarines in the naval fleet.
Lots More Information
Related HowStuffWorks Links
* How Submarines Work
* How Telescopes Work
* How are people able to breathe inside a submarine?
* How Stuff WILL Work
Other Great Links
* Virginia Class New Attack Submarine
* The Virginia Class: America''s Next Submarine
* NOVA Online: See Inside a Submarine
* Submarines Today
* Popular Science: Shadow in the Shallows
* Submarine Warfare

Thật tội nghiệp. Không não, không tai, bây giờ lại không có mắt nữa. Mấy cái "giây" đó là thời gian lúc họ nói những câu tớ dịch đấy.
Câu cuối: phim Harry Potter "dụ dỗ" con nít coi phim làm từ truyện (thời gian 1:55). Đó là tít cho tin "chó cán xe".
Thêm một cái này nữa: cái "tít" Canada Hit US with bull**** noise violation. Luật Mỹ cấm dùng những chữ bậy bạ này trong vấn đề thông tin cho cộng đồng (luật của FCC). Bác không có mắt chắc không thấy đâu, nhờ người khác đọc dùm cho.

Zịt có zịt cũng vừa thôi, đang tự chưởi đấy à.
1- Tôi đưa tin của Raytheon từ trang news của raytheon về việc họ thử AIM-9X block II từ ngầm dưới nước
2- Zịt hỏi làm sao điều khiển
3- Tôi tìm cái trang trình mẫu giáo giảng về vấn đề quan sát trên tầu ngầm cho zịt hiểu tầu ngầm có cái thiết bị quan sát gắn trên ống tìm vọng có thể dùng truy tìm mục tiêu và đo tầm.
4- AIM-9X block 2 có LOAL nên có thể lock sau khi phóng
Vậy hiểu chưa? Hôm trước vụ SSX đưa tin rồng thấy zịt nhảy vô trước tiên đủ biết thế nào là não zịt.

Trời đất, em tưởng bác make fun như bác SSX chớ, không lẽ bác định dùng cái sensor đó để control missile thực hả !!!!
Ặc ặc.... em đi chết đây

Đúng là tăng rồng từ "Fake" thành "Real" với bác AT thực rồi. Chết mất thui!
HaHaHaHaHaHaHaHaHaHa HiHiHiHiHiHiHiHiHiHiHiHiHiHiHiHiHiHi

Tôi theo dỏi và nhận ra có lẻ bác Vịt không hiểu AIM-9X block 2 hoạt động ra sao . Tầu ngầm với mast gắn camera và IR cùng ăng-ten radio và laser range finder. Với thiết bị EO đó chỉ cần nâng cấp soft là có thề dùng search và track target tức là làm cái target acquisition . Data nạp vào AIM-9X block 2 và phóng. sau khi phóng down up link nối với TL cho TL thực hiện lock on. vậy là xong. AIM-9X block 2 có LOAL. Bác vịt hiểu chưa? còn cần thêm gì nữa không? AIM-9 các loại dùng ngay đầu dẩn của nó để lock on. dùng cho F-22/35 thì không thể nên buộc phải có LOAL. các bác chống Mỹ quá đến cuồng thì phải? Biết tiếng Anh thì không chống Mỹ à?
Được vietkedoclap sửa chữa / chuyển vào 06:48 ngày 19/09/2009

Bác có sure "camera và IR cùng ăng-ten radio và laser range finder" có thể detect được không ????. Từ cái sensor của trang stuff how ??.
Datalink là datalink, còn datasource bác lấy từ đâu ????

Chống Mỹ thì làm sao đọc được tiếng anh ????. Chống hội chứng hoang tưởng thôi !!! Mà sao lại dùng từ chống nghe ghê quá...

Hắn chả biết gì đâu chị ạ. Nhìn hắn viết là biết rồi. Detection là gì? là nhìn tìm phát hiện. Có camera và thiết bị IR mà không nhìn thấy gì à? Đương nhiên hiện nay cái mast ấy không có chức năng target acquistion cho AD nhưng đã có EO và laser rangefinder không làm được target acquistion cho tên lửa IR à? nguồn data ở đâu? sao hỏi @ quá vậy. Target acquistion nghĩa là gì? có ăng-ten radio thì nâng cấp cho up link down link được không? Hoang tưởng kiểu Rác-Dịch à? Mỹ cho chương trình AD cho Sub gần bờ. Raytheon nghiên cứu và thành công bắn AIM-9X block II từ dưới nước và tin được đưa trên trang tin của Raytheon . đưa tin ấy là hoang tưởng? còn Rác-Dịch xúm nhau tung hô tin fake news cải biên theo ý @ là gì vậy. Đúng là @ . nè Dịch@ , AEAS là gì vậy? radar @ à?