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F-22 RF Anechoic Chamber Test Radar Waves
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Reply 139# windof
Kununnya nak berstrategik thinking bagai, skang strategi apa tak menjadi, duit dah beli overpriced IFV, dah jadi mcm kids cry wolf, lepas ni sapa pun payah nak percaya.. |
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Reply 142# areguard
depa punya strategik thinking tak main feter2 n aset2 deterrence yg "tampak" bertimbun2..... bukan style depa lagu tuh...
sebaliknya depa punya strategik thinking prefer to be low profile and to keep low forever.... biaq low asalkan terer, macam pendekaq2 zaman dolu kala....;) |
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wuissh, dlm movie armageddon, benda berduri2 tulah yg diletak sekeliling buggy besar yg geng bruce willies naik masa kat asteroid tu |
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Lockheed to preserve F-22 tooling for future use
By Stephen Trimble
Lockheed Martin confirms the US Air Force has decided to retain tooling for the F-22 after the production line in Marietta, Georgia, shuts down as scheduled in 2012.
The decision means that USAF officials will be able to repair and modernise the service's aircraft, or manufacture new Raptors.
Lockheed says tools with " near-term needs " will be retained on site. Others will be preserved and stored in large, bar-coded steel containers commonly used by the shipping industry, which it says reduces " costs associated with conventional warehousing ".
Air force officials were not immediately available to comment, but have previously said that a decision to preserve F-22 tooling would be intended to support a future service life-extension programme for the stealth fighter.
At the same time, the decision also implicitly preserves the option to restart production if future administrations decide that the USAF needs more than 186 F-22s.
Congress in 2009 approved the Obama administration's decision not to extend F-22 production beyond the programme of record set by the Bush administration in 2006. But the Congressional approval came only after several months of heated debate.
Meanwhile, Rand's Project Air Force analytical group published a study on 3 March showing that the F-22 supply chain could be reactivated after a two-year gap. Rand studied not only the availability of tooling, but also whether key suppliers could leave the industry within this period of time.
However, Rand concluded that restarting production after a two-year work stoppage would significantly increase costs.
Assuming a 75-aircraft production run over five years, it found the cost per aircraft would be $227 million. If production continued without interruption, the average unit cost would be $173 million.
Sources : http://www.flightglobal.com/
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Lockheed to preserve F-22 tooling for future use
By Stephen Trimble
Lockheed Martin confirms the US Air Force has decided to retain tooling for the F-22 after the production line in Marietta, Georgia, shuts down as scheduled in 2012.
The decision means that USAF officials will be able to repair and modernise the service's aircraft, or manufacture new Raptors.
Lockheed says tools with " near-term needs " will be retained on site. Others will be preserved and stored in large, bar-coded steel containers commonly used by the shipping industry, which it says reduces " costs associated with conventional warehousing ".
Air force officials were not immediately available to comment, but have previously said that a decision to preserve F-22 tooling would be intended to support a future service life-extension programme for the stealth fighter.
Sources : http://www.flightglobal.com/
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USAF launches search for missing F-22 Raptor
By Craig Hoyle
The US Air Force launched a search operation last night after one of its Lockheed Martin F-22 fighters failed to return to its base following a training mission.
“ An air force F-22 assigned to the 3rd Wing at Joint Base Elmendorf-Richardson lost contact with air traffic control at 7:40pm Alaska time today while on a routine training mission, ” the USAF says in a brief statement.
The service confirms that “ a search is underway ”, and says : “ more information will be released as it becomes available ”.
News of the missing Raptor comes just months after a C-17 strategic transport from the USAF’s 3rd Wing crashed at Elmendorf-Richardson AFB, killing all four crew members.
Sources : http://www.flightglobal.com/
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Post Last Edit by epal10 at 24-11-2010 10:44
Lockheed to preserve F-22 tooling for future use
By Stephen Trimble
Lockheed Martin confir ...
HangPC2 Post at 14-11-2010 20:26 
Kalau ikut F-22 Raptor ni merupakan jetfighter yg sgt tinggi kos pembangunannya. Dan kos pengeluarannya juga tinggi. Memang sgt. canggih F-22 Raptor ni, tapi nampaknya penggunaan dia xseberapa dan pd. tahap optimum kerana US tidaklah terlibat dgn. konflik peperangan besar sejak beberapa tahun ni, lebih2 lagi di bawah pentadbiran Obama.Syukur jugaklah.Kalau tak, pasti F22 Raptor mungkin akan digunakan. Dan rasanya USAF sendiri lebih "selesa" menggunakan pesawat lain spt. angkatan F15/F16/FA18 super hornetnya. Dan ditambah lg dgn. F-35 JSF yg. sedang dibangunkan bersama negara sekutu, seolah2 "cukup setakat itu" pengeluaran F-22. Cuma yg. bestnya, F-22 ini merupakan "hak eksklusif" USAF seperti pesawat F117 kerana larangan eksportnya. Rasanya kalau boleh eksport F-22 ni pun, mungkin byk. negara fikir byk. kali sbb. harganya yg. tinggi. Rasanya Israel je yg. beriya2 nk beli pesawat ni.
Cukuplah aku tgk. aksi F-22 dlm. filem2 Hollywood. |
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nnt mesti mossad curi tech raptor ni |
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Boeing ATF Proposal
General Dynamics ATF Proposal
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F-22 Design Evolution
Lockheed had done the first studies by the early 1970s for a ' superstealth ' air-to-ground attack airplane for the US Navy. Lockheed used superstealth to refer to a significant improvement in an aircraft's stealth characteristics.
- Bart Osborne, program manager for Lockheed Tactical Systems in 1972
Boeing stressed stealth with clever internal arrangements and weapon bay designs that carried munitions semi-submerged.
After a year of study and report writing by industry, ASD performed mission analyses on four generic fighter designs that spanned the variety of aircraft investigated by the companies. The aircraft were labeled N, SDM, SLO, and HI. N (numbers) was a small, cheap concept that could be bought in quantity. SDM (supersonic dash and maneuver) emphasized speed and maneuverability. SLO (subsonic low observables) was based on a flying wing design. HI (high-Mach/high-altitude) represented a large missileer. The results, which were presented to all participants, favored the flying wing. The more conventional SDM fighter placed second in effectiveness. The missileer (shown here) and inexpensive minifighter did not rate well in the analyses.
The ability to operate an aircraft from battle-damaged runways was yet another characteristic evaluated in the early ATF studies of the 1970s and 1980s. Designs incorporating this capability are referred to by a number of terms, including short takeoff and landing, short takeoff and vertical landing, and vertical takeoff and landing (STOL, STOVL, and VTOL, respectively). The benefits of abbreviated takeoffs and landings are, however, less clear than benefits associated with stealth, speed, and maneuverability.
One of two early General Dynamics candidates for ATF was a descendent of Sneaky Pete. The company, however, was not allowed to show USAF officials actual drawings of this design because of its classification. The company substituted surrogate drawings of a notional fighter that USAF officials soon dubbed the marshmallow. The real design was the starting point for all-wing studies explored in the next phase of the program.
Lockheed's early configurations featured faceted designs based on the F-117.
Sources : http://www.codeonemagazine.com/
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USAF Indefinitely Grounds F-22 Raptors
By SCOTT FONTAINE and DAVE MAJUMDAR
Published: 5 May 2011 17:48
The U.S. Air Force has grounded all of its F-22 Raptors until further notice because of potential malfunctions in the fighter jets' oxygen-generation system.
Gen. William Fraser, commander of U.S. Air Combat Command, ordered a stand-down of the 165-plane fleet May 3, ACC spokeswoman Capt. Jennifer Ferrau said. Ferrau didn't immediately know how long the Raptors will be out of service.
The On-Board Oxygen Generating System (OBOGS) has been under investigation since an F-22 crashed in November just outside Joint Base Elmendorf-Richardson, Alaska. Until the stand-down, Raptor sorties had been restricted to an altitude of 25,000 feet or below for training missions because of the potential malfunctions.
The limits were " designed for mishap prevention and is a prudent measure to ensure the OBOGS are operating safely, " ACC spokesman Col. William Nichols said in March, when the command first publicly disclosed the investigation.
An OBOGS malfunction can be potentially life-threatening, said Hans Weber, who sat on the U.S. Federal Aviation Administration's Research, Engineering and Development Advisory Committee, and is president of Tecop International, a San Diego consulting firm.
" It's a big deal if you're at high altitude and you run out of oxygen, " Weber said in a March interview.
At 50,000 feet, a human being has less than 10 seconds of useful consciousness, he said. The 25,000-foot altitude restriction would allow the pilot to quickly dive below 18,000 feet, where the atmosphere has enough oxygen to ensure prolonged survival in case of an emergency.
" It would take you so long when you're way up high, you may black out before you make it to a safe altitude, " Weber said.
Sources : http://www.defensenews.com/
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USAF Indefinitely Grounds F-22 Raptors
By SCOTT FONTAINE and DAVE MAJUMDAR
Published: 5 May 20 ...
HangPC2 Post at 6-5-2011 10:52 
nak tanya kalau2 ada yg boleh jawab.....berapa tahap ketinggian maximum raptor ni boleh capai dan berapa tahap tertentu untuk operasi2 penggempuran kubu musuh dll operasi udara??? |
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nak tanya kalau2 ada yg boleh jawab.....berapa tahap ketinggian maximum raptor ni boleh ca ...
lkick2113 Post at 6-5-2011 07:37
65,000 feet service ceiling. High wing area and powerful engine trust make it possible to fly higher. |
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65,000 feet service ceiling. High wing area and powerful engine trust make it possible to ...
kelana36 Post at 6-5-2011 13:40
kalau macam tu bro.... possibility untuk delta wing aircraft untk fly higher adalah tinggi la ye??? |
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Post time 8-5-2010 01:07 PM
