Giới thiệu về Su-27SKM và Su-30MK2 (PART-2)

Raytheon Wins Navy Super Hornet AESA Contract
Feb 7, 2008
Bettina Haymann Chavanne/Aerospace Daily & Defense Report
Raytheon will provide the U.S. Navy with its APG-79 Active Electronically Scanned Array radar (AESA) to retrofit 135 F/A-18 Super Hornets and eventually to equip production aircraft as they come off the line.
An initial contract worth nearly $55 million authorizes Raytheon *****pply 19 AESA systems, spares and maintenance. The APG-79 program is moving toward full-rate production in anticipation of delivering 415 systems plus spares to the Navy in the coming years.
"[Air crew] that operate AESA [say] it gives them better range and allows them more time to assimilate data," Raytheon F-18 Business Development Director Dave Goold told Aerospace Daily. "You''''re getting contacts at a longer range... [and the air crew] can assimilate and share [data] with other aircraft or ground stations to build situational awareness."
Goold said the APG-79 has reached several milestones, including initial operating capability of the system and approval for full-rate production. The system enables air crew to gather air-to-air and air-to-ground data simultaneously. "We were the very first to introduce this capability to the operational environment" on F-15Es, Goold said.
When Raytheon announced the selection of the system for Boeing''''s F-15 late last year, the company predicted a market for more than 1,000 fighters and systems to be upgraded with its AESA radar system over the next 20 years (DAILY, Nov. 5, 2007).
Two AESA-equipped fleet squadrons are training for deployment later this year: the Black Lions of VFA-213 at Naval Air Station Oceana and the Fighting Red****s of VFA-22 at Naval Air Station Lemoore. AESA-equipped Super Hornets are also being added to two training squadrons so aircrews can train on the advanced capabilities of the APG-79.
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F/A-18 AESA - New Technology Revolutionizes Radar Benefits
Story Number: NNS020712-11
Release Date: 7/12/2002 11:17:00 AM

By Nicolette Cormier, NAVAIR Public Affairs
PATUXENT RIVER, Md. (NNS) -- The fleet can expect dramatic changes in radar operation with the introduction of the APG-79 Active Electronically Scanned Array (AESA), a wide band electronically scanned array radar for the F/A-18E/F "Super Hornet."
While fleet operators are excited about this new technology, many do not appreciate the depth of the differences between the radar in use today, and the AESA the Super Hornet and Joint Strike Fighter (JSF) will utilize.
Cmdr. Dave Dunaway, APG-79 Program Manager, said, "This is a state-of-the-art radar. In my twenty years in the US Navy, this is the first time I have seen a revolutionary leap in capability vice evolutionary.
"It''''s not an incremental change. It''''s probably got at least 10 times more capability than the APG-73 and we are doing it in less time. When compared to historical radar programs, this one is faster, cheaper and provides much more performance," Dunaway said.
Dunaway cre***s the program''''s success to the inventive acquisition strategy and the compressed timeline put together by a team of government and industry personnel. He said, "We used an innovative contracting strategy to minimize the delayed start of the program.
In the past, a program like this would not have entered Engineering and Manufacturing Development (EMD) for three years from the concept development. Because of this unique funding strategy, AESA hit EMD at full steam in February 2001, a little over a year after new start approval."
AESA''''s state-of-the-art technology begins with its antenna. Manufactured by the Raytheon Company, it features a tile array vice brick array and uses exceptionally innovative processor architecture. Dunaway explained, "The transmit and receive modules (TR) are very thin, about the size of a quarter.
This is the technology of the future. It''''s basically the same antenna that Boeing and Raytheon had proposed for the JSF, using the flip chip technology."
Testing has shown that the electronically scanned array is far superior to the mechanical scanning methodology of tracking. With mechanical tracking, the radar tracked while scanning, taking up a fair amount of time and reducing track accuracy.
The electronically scanned array uses a "search while track" methodology that significantly improves track quality of multiple targets with little or no degradation of the search capability of the radar.
The new array searches while it tracks the target on a need-to-track basis, giving a much better multiple target track capability. Although it still takes time to go through the volume with electronic scanning, once the target is found within that volume, the radar automatically schedules periodic look backs keeping track of the target at a much higher level of fidelity and frequency than a mechanically scanned antenna.
Furthermore, this AESA has a more powerful radar. Detection ranges will be significantly better than the current APG-73 radar, giving the pilot a tactical range advantage. This brand new radar shows more targets at a much higher fidelity, which provides the pilot more time to accomplish other tasks, as well as the ability to scan air-to-air and air-to-ground in a near simultaneous fashion.
In the air-to-ground arena, the improved detection range has resulted in higher resolution Synthetic Aperture Resolution (SAR) maps that are at a higher resolution than the current capability. The aircrew can see minute runway details on the map and can identify aircraft. The new AESA provides very high-resolution maps at a range further than possible with the lower resolution APG-73 map.
"This radar will change the way we do business," said Dunaway. "We are currently limited by the radar''''s ability to detect air-to-air targets at range. In other words we have to wait and let the radar catch up before we can shoot the missile.
With the AESA we''''ll be able to shoot the missile even before the target comes within the missile''''s range. The APG-79 radar has been designed to enable the aircrew to detect and process the target, well before it enters the maximum range of the Super Hornet''''s air-to-air missiles, allowing missile launch at maximum range. "
The array is situated in the nose of the airplane and each of the TR modules on the array is essentially an individual radar that transmits and receives. Once the information is received by the array, it enters the common integrated sensor processor where it is converted to tactically useful information and displayed to the aircrew. The radar then send commands back to the processor where they are converted to ad***ional tasks for the radar to perform.
From a maintenance standpoint, the antenna is projected to have reliability that''''s longer than the life of the airframe. In ad***ion, the processors are no longer replaced at the box level. Repair is easy; maintenance personnel open the box and pull a card out. This philosophy has eliminated the need to spare good cards within a Weapons Replaceable Assembly (WRA) when only one card is bad.
The Super Hornet has a reduced radar cross section technology (stealth) incorporated into its design. A tra***ional mechanically scanned array counters that capability and increases the effective radar cross section of the aircraft.
AESA allows the aircrew to enjoy the radar cross-section improvements on the aircraft without adversely impacting weapon system performance. Situated in the nose of the airplane, the AESA communicates through the fibre channel interface of the airplane, transmitting a huge amount of data through the advanced mission computers, into the new displays. All of this information flows freely between the radar, the Advanced Mission Computers (AMCs) and advanced displays via a fibre channel network within the airplane.
This is the first state-of-the-art fibre channel bus to be installed in a Navy tactical fighter and it represents another leap in capability and growth potential. This new architecture paves the way for tremendous AESA growth capabilities in Electronic Warfare and makes an AESA equipped Super Hornet a prime candidate for the Advanced Electronic Attack (AEA) aircraft.
In ad***ion to all of the modifications directly associated with the radar, there have been extensive modifications to the aircraft *****pport the AESA. Because of the tremendous power generated and the multitude of processors required, two new heat exchangers were added to the aft end of the airplane. These new heat exchangers have enhanced the liquid cooling capacity of the aircraft significantly, and have provided the radar the essential cooling required.
Dunaway summed up the timeline. "We started the program with a year of contractor development in the primary development phase under a unique advanced agreement that got us through a Preliminary Design Review (PDR). In February of 2001, we kicked off EMD and conducted a Critical Design Review (CDR) by December of 2001. It is very unusual for a program this complex to progress so quickly. Since CDR, the program has been focusing on producing EMD hardware that is being delivered to the laboratories for hardware development, software development and weapon system integration.
Following the laboratory development phase, an extensive flight test program with the AESA radar installed in the Super Hornet will be conducted to ensure that the total system performance meets or exceeds the performance required in the projected threat environment.
The AESA radar is a revolution, not an evolution for the Super Hornet and will make this airplane one of the most capable and desired aircraft on the battlefield.
For more information concerning the U.S. Navy''''s AESA Radar or the F/A-18 Program, contact Denise Deon Wilson at 301-481-6263 or visit our web site at http://pma265.navair.navy.mil/.
Video
http://www.aviationweek.com/aw/video/video_display.jsp?video_name=defense_f18_radar&id=news/VIDAESA020708.xml&channel=defense

Được gulfoil sửa chữa / chuyển vào 15:57 ngày 27/02/2008

Không thấy lời lẽ hay ho gì về cái góc nghiêng nhỉ ???? Rồi tầm đối không, rồi góc chiếu ????
Năm 2001 cứ tưởng cách mạng AESA góc rộng lắm cơ.
Độ phân giải quá thấp và góc quá hẹp ?????? Radar này đổ thêm sự bất bình của dân chúng Mỹ về F-18. Nó không chiến quá tồi tệ, không chiến còn quá quắt hơn một chiếc trực thăng bao quát được 4 phía.
Người Mỹ giờ này lại phải tung hô F-16, thứ đồ cổ thiết kế theo chiến lược MiG-21 này không chiến tốt hơn F-18, đối đất bằng đạn thông minh như nhau-nếu không tính F-16 vùng nhìn radar rộng hơn. Nhược điểm lớn nhất của F-16 là mang nhẹ ít bom ???? nhưng nó lại rẻ để mua 2 cái thay cho 1 F-18.
Đáng buồn là người ta hay so Su-30 với F-18. Ít ra Su thịt máy bay này trước khi nó biết có Su đến.

Người ta chỉ so chúng về cái cách nó được sử dụng trong thực tế thôi phú-cầy ợ!

Hai bác cho em hỏi là hai thằng này đã từng thịt nhau chưa ạh?

Thực tế thì chưa. Nhưng Su-30 đã thắng đứt F18 trong diễn tập và trong tư tưởng của chuyên gia gúc-sợt phú-cầy

Bác gulfoil không có hình nào khác mà phải đưa hình đểu này lên sao?

Huyphuc làm ơn cho biết cái vụ chúc xuống đất kia là nói về AESA mới của F15 hay F18 thế?
Nếu là về AESA của những chú này thì vui lòng cho biết cái vụ nó chúc xuống đất là tự cậu nhìn cái hình rồi nghĩ ra hay là cậu có hình nó chúc xuống đất, hay là cậu có tài liệu nói nó chúc xuống đất?
Nếu có hình hay tài liệu (link thì càng tốt) cho thấy nó chúc xuống đất thì vui lòng post lên cho tớ tham khảo với. Cái vụ chúc xuống đất của mấy cái AESA Mẽo này là lạ mà hay đáo để. Cám ơn trước.

Đã dành riêng một topic cho các đồng chí xả sờ chét rồi.
Các đồng chí văng hết cả ta li ban với ly băng vào máy bay làm văn tán nhảm. Không xả sờ chét.
Rồi bên này các đồng chí lại bức xúc ị ra.
Tôi giả nhời các đồng chí một lần thôi rồi khuân cái xả sờ chét đi nhé. Đây không phải chỗ F-18.
Tôi giả nhời thế này này, các đồng chí cứ kiếm ảnh đẹp nhất của nó thì nó cũng phải chúc đầu xuống để đối đất, Tức là đối không bằng mắt cận không đeo kính.
Thế thôi nhé, rồi khuân sờ chét của các đồng chí biến đi khẩn cấp.

Ấy! Bình tĩnh nào, đừng cà cuống thế chứ!
Tớ không có, không biết, thì tớ mới hỏi cậu. Vậy mà cậu lại bảo tớ cứ kiếm ảnh của nó, thế thì hỏi cậu làm cái deck gì, phỏng ạ!
Đã đành rằng đây không phải là chỗ của F-18, nhưng cũng chẳng phải là chỗ cho những AIM-120, rồi F-16, F15, rồi radar của Mẽo, rồi Su-25, Mig-31.... Vậy mà những cái đấy cậu cũng lôi vào cả. Nguyên cái vụ radar AESA của F-18 chúc xuống đất cũng là cậu lôi vào. Bây giờ lại phán rằng đây không phải là chỗ của F-18 để lảng không trả lời thì xem ra cũng không hay ho lắm, nhỉ!
Đến bác chủ topic là bác Gulfoil còn mang ảnh radar Mẽo với các bài về đồ Mẽo post lên. Thế thì cậu cứ an tâm mà giúp tớ cái vụ F-18 radar chúc xuống này. Đừng lo lắng gì! Bằng mà cậu không có, thì cậu nói luôn là không có cho nó rồi, để tớ còn biết rằng cái vụ chúc xuống đấy là nó từ cái lỗ nào ra. Thế nhé!
(Ấy quên! Bác Gulfoil cho phép em hỏi Huyphuc cái vấn để trên ở topic này của bác nhé! Cám ơn bác!)

Đồng ý với hairyscary Post vài ảnh SU-27 SM "chôm" từ www.flanker.free.fr cho không khí nó mát một tí