Bạn SVG nói đúng, thằng F22 khổ sở vì cái đuôi phát nhiệt của động cơ, thay đổi hết thò ra thụt vào tới so le lung tung ấy. Hệ làm mát thì cũng thừa hưởng bên B2.
Cái Mig 35 nó không vậy, dù giảm, chống xung ..v..v. nhưng rada phát triển nhanh hơn về độ nhạy, hệ biến đổi pha hiện đại để phát hiện số dùng khung giảm như SU/Mig..... nên Mig 35 vẫn cứ lù lù trên màn hình, chỉ lúc sắp chết nó mới chơi platma. Vậy nên người ta cho rằng nó chẳng tàng hình chút nào! quan điểm "thế nào là tàng hình" lũ đầu còn thế. Nhưng sau này với T50 có lẽ phải thuyết phục hơn (để bán).
Cái Mig 35 nó không vậy, dù giảm, chống xung ..v..v. nhưng rada phát triển nhanh hơn về độ nhạy, hệ biến đổi pha hiện đại để phát hiện số dùng khung giảm như SU/Mig..... nên Mig 35 vẫn cứ lù lù trên màn hình, chỉ lúc sắp chết nó mới chơi platma. Vậy nên người ta cho rằng nó chẳng tàng hình chút nào! quan điểm "thế nào là tàng hình" lũ đầu còn thế. Nhưng sau này với T50 có lẽ phải thuyết phục hơn (để bán).
tin mới nhất về chi phí sx F 35: giá 1 chiếc sẽ tăng hơn gấp đôi so với ban đầu: từ 50 lên 113 tỷ usd.. kỳ này cho chết lão Obama
[H1]Pentagon's future fighter aircraft doubles in cost [/H1] By Mike Mount, CNN Senior Pentagon Producer
March 12, 2010 12:32 p.m. EST
The cost of the F-35 aircraft has gone from $50 million a jet in 2001 to about $113 million.
STORY HIGHLIGHTS
[*]The cost of the F-35 aircraft has gone from $50 million a jet in 2001 to about $113 million[*]F-35 joint strike fighter is most expensive Pentagon weapons program ever[*]Pentagon wants to buy more than 2,400 of the technologically advanced aircraft[*]Even with delays, cost overruns, first planes expected in service as early as 2012 [/UL]
RELATED TOPICS
[*] Military Aircraft Technology[*] Military Weapons[*] Military Technology [/UL]
Washington (CNN) -- The cost of the Pentagon's newest fighter jet will be more than double the original price, solidifying the F-35 joint strike fighter as the most expensive Pentagon weapons program ever.
At a Capitol Hill hearing on Thursday, the Pentagon's chief weapons buyers said numerous problems over the almost 10-year program have forced the cost of the aircraft to go from $50 million a jet in 2001 to about $113 million.
That cost overrun has also forced the Pentagon to justify the program to Congress.
Outrage about the cost among the Senate panel was expected, including that from the chairman of the Armed Service Committee, Sen. Carl Levin, D-Michigan.
"This committee has been a strong supporter of the JSF program from the beginning, however, people should not conclude that we're going to be willing to continue that strong support without regard to increased costs coming from poor program management," Levin said.
Sen. John McCain, R-Arizona, the ranking member, had been pushing for a hearing on the program.
"The taxpayers are a little tired of this, and I can't say that I can blame them," McCain said.
"It's a bit frustrating to hear the secretary of defense as short a time ago as last August to tell us that everything is OK," McCain said.
McCain was referring to a visit to the joint strike fighter assembly plant last year where Secretary of Defense Robert Gates said most of the high risk elements associated with JSF's developmental program were largely in the past, according to McCain.
The Pentagon wants to buy more than 2,400 of the technologically advanced aircraft.
The F-35 program has had numerous technical problems, delays and slow productivity over the years, including an entire program restructuring in an attempt to reduce the skyrocketing cost.
Undersecretary of Defense for Acquisition Ashton Carter told the Senate panel that the program has fallen short on performance in the past few years. "That is unacceptable," he said.
Despite that, the fighter jet program still enjoys strong support from service chiefs and congressional members because it touches numerous states.
The F-35 program cost overrun triggered the Nunn-McCurdy law, which requires the Pentagon to tell Congress of significant cost increases. The law forces the Pentagon to justify continuing with the program.
The Pentagon's director of cost assessment and program evaluation, Christine Fox, told the senators she expects the Pentagon will officially notify Congress under the Nunn-McCurdy regulation by April 1.
The plane was designed to be the next generation fighter for the military and would have three variants. The Navy would have one for its carrier fleet, the Marines would use it to replace their aging Harrier jump jet fleet and the Air Force would use it as the service phases out the F-16 and F-15 fighter jets.
The planes are being built by Lockheed Martin, and the program also has international partners who have been building parts for the aircraft.
More than 700 of them would be sold to those partner countries, including the United Kingdom, Italy, the Netherlands, Turkey, Canada, Denmark, Norway and Australia.
The fighter is the largest weapons program ever and Gates has been counting on it, as there are no immediate alternative programs to the F-35.
Even with the delays and cost overruns, the first planes are expected to be put into service as early as 2012 for the Marine Corps.
But the Air Force and Navy are expecting their first aircraft to be delivered by 2016, a two year delay for the Navy and a three year delay for the Air Force, according to Pentagon officials.
Even as the program tries to field an aircraft in less than two years, a Government Accountability Office (GAO) official testified at the hearing that there are still no final costs associated with the program through its projected life ending in 2034.
"To date, the department does not have a full, comprehensive cost estimate for completing the program," said Michael Sullivan, director of the acquisition and sourcing management team for the GAO.
[H1]Pentagon's future fighter aircraft doubles in cost [/H1] By Mike Mount, CNN Senior Pentagon Producer
March 12, 2010 12:32 p.m. EST
The cost of the F-35 aircraft has gone from $50 million a jet in 2001 to about $113 million.
STORY HIGHLIGHTS
[*]The cost of the F-35 aircraft has gone from $50 million a jet in 2001 to about $113 million[*]F-35 joint strike fighter is most expensive Pentagon weapons program ever[*]Pentagon wants to buy more than 2,400 of the technologically advanced aircraft[*]Even with delays, cost overruns, first planes expected in service as early as 2012 [/UL]
RELATED TOPICS
[*] Military Aircraft Technology[*] Military Weapons[*] Military Technology [/UL]
Washington (CNN) -- The cost of the Pentagon's newest fighter jet will be more than double the original price, solidifying the F-35 joint strike fighter as the most expensive Pentagon weapons program ever.
At a Capitol Hill hearing on Thursday, the Pentagon's chief weapons buyers said numerous problems over the almost 10-year program have forced the cost of the aircraft to go from $50 million a jet in 2001 to about $113 million.
That cost overrun has also forced the Pentagon to justify the program to Congress.
Outrage about the cost among the Senate panel was expected, including that from the chairman of the Armed Service Committee, Sen. Carl Levin, D-Michigan.
"This committee has been a strong supporter of the JSF program from the beginning, however, people should not conclude that we're going to be willing to continue that strong support without regard to increased costs coming from poor program management," Levin said.
Sen. John McCain, R-Arizona, the ranking member, had been pushing for a hearing on the program.
"The taxpayers are a little tired of this, and I can't say that I can blame them," McCain said.
"It's a bit frustrating to hear the secretary of defense as short a time ago as last August to tell us that everything is OK," McCain said.
McCain was referring to a visit to the joint strike fighter assembly plant last year where Secretary of Defense Robert Gates said most of the high risk elements associated with JSF's developmental program were largely in the past, according to McCain.
The Pentagon wants to buy more than 2,400 of the technologically advanced aircraft.
The F-35 program has had numerous technical problems, delays and slow productivity over the years, including an entire program restructuring in an attempt to reduce the skyrocketing cost.
Undersecretary of Defense for Acquisition Ashton Carter told the Senate panel that the program has fallen short on performance in the past few years. "That is unacceptable," he said.
Despite that, the fighter jet program still enjoys strong support from service chiefs and congressional members because it touches numerous states.
The F-35 program cost overrun triggered the Nunn-McCurdy law, which requires the Pentagon to tell Congress of significant cost increases. The law forces the Pentagon to justify continuing with the program.
The Pentagon's director of cost assessment and program evaluation, Christine Fox, told the senators she expects the Pentagon will officially notify Congress under the Nunn-McCurdy regulation by April 1.
The plane was designed to be the next generation fighter for the military and would have three variants. The Navy would have one for its carrier fleet, the Marines would use it to replace their aging Harrier jump jet fleet and the Air Force would use it as the service phases out the F-16 and F-15 fighter jets.
The planes are being built by Lockheed Martin, and the program also has international partners who have been building parts for the aircraft.
More than 700 of them would be sold to those partner countries, including the United Kingdom, Italy, the Netherlands, Turkey, Canada, Denmark, Norway and Australia.
The fighter is the largest weapons program ever and Gates has been counting on it, as there are no immediate alternative programs to the F-35.
Even with the delays and cost overruns, the first planes are expected to be put into service as early as 2012 for the Marine Corps.
But the Air Force and Navy are expecting their first aircraft to be delivered by 2016, a two year delay for the Navy and a three year delay for the Air Force, according to Pentagon officials.
Even as the program tries to field an aircraft in less than two years, a Government Accountability Office (GAO) official testified at the hearing that there are still no final costs associated with the program through its projected life ending in 2034.
"To date, the department does not have a full, comprehensive cost estimate for completing the program," said Michael Sullivan, director of the acquisition and sourcing management team for the GAO.
Cách tàng hình của Mig-35 theo Bác Giáo giới thiệu em hiểu nôm na là như vầy: nếu ta ném 1 trái banh về phía 1 bề mặt
- Nếu là F-22: trái banh đó không dội lại.
- Nếu là Mig-35: bằng cách nào đó, nó sẽ trả lại 1 trái banh khác như trái banh tenis chẳng hạn
Đó là nhờ cấu trúc khung và mạch bù pha làm thay đổi bước sóng của sóng phản hồi. Vậy em xin hỏi: Làm sao cái cấu trúc khung sườn đó đáp ứng nhiều bước sóng khác nhau? vì thực chất nếu có cái khung như vậy, em tin rằng nó chỉ phù hợp với 1 chỉ số bước sóng duy nhất mà thôi. Nên nhớ là theo nhu cầu thì không thể để thoát 1 tần số sóng nào hết!
Máy trộn pha - theo cách gọi của Bác Giáo: để bù vào phần thiếu của cấu trúc khung.
- Nếu đợi cho có sóng tới mới phát thì cách gì đáp ứng cho được? Sóng điện từ đi tới và phản hồi với tốc độ ánh sáng.
- Nếu phát thường xuyên: có khác nào tự tố giác mình hay sao? Vì thực chất nó là 1 máy phát sóng mà.
- Nếu là F-22: trái banh đó không dội lại.
- Nếu là Mig-35: bằng cách nào đó, nó sẽ trả lại 1 trái banh khác như trái banh tenis chẳng hạn
Đó là nhờ cấu trúc khung và mạch bù pha làm thay đổi bước sóng của sóng phản hồi. Vậy em xin hỏi: Làm sao cái cấu trúc khung sườn đó đáp ứng nhiều bước sóng khác nhau? vì thực chất nếu có cái khung như vậy, em tin rằng nó chỉ phù hợp với 1 chỉ số bước sóng duy nhất mà thôi. Nên nhớ là theo nhu cầu thì không thể để thoát 1 tần số sóng nào hết!
Máy trộn pha - theo cách gọi của Bác Giáo: để bù vào phần thiếu của cấu trúc khung.
- Nếu đợi cho có sóng tới mới phát thì cách gì đáp ứng cho được? Sóng điện từ đi tới và phản hồi với tốc độ ánh sáng.
- Nếu phát thường xuyên: có khác nào tự tố giác mình hay sao? Vì thực chất nó là 1 máy phát sóng mà.
Dù F-35 chưa ra giá nhưng em đoán nó phải khá mắc. Vì nghiên cứu công phu và lâu quá. Tuy nhiên càng lâu thì có khả năng càng tốt. Dù gì thì họ cũng tính cho F-22 về vườn từ 2025. Có thể vài năm tới các bác sẽ thấy chiếc F-44 hay cái gì đó.
xxmagicxx nói:
Theo em biết thì cũng không cần phức tạp thế. Bác treo 1 đống vũ khí, tức là bác lộ nguyên hình. Từ 400km người ta biết bác bay hướng nào, tính làm cái gì...vậy bác tàng hình bằng máy phát sóng làm gì? Chẳng lẽ vứt hết tên lửa, bom, bay không chiến bằng súng canon?
Cái lý do tàng hình là để người ta đừng nhìn ra bác, khi đó buồn buồn bác chạy lại từ sau lưng, nơi có 2 cái lò sưởi tỏa nhiệt, bác bùm cho sướng.
