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Thêm thông tin về C5 từ link của không quân Mỹ
C-5 Galaxy- Tầm ko tiếp xăng khi ko chở hàng là 11.712 km.(6320NM)
Hiện Ko quân Mỹ có 111 C5.

Photos
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The C-5M flies during its First Flight ceremony at Lockheed Martin’s Marietta, Ga. plant. This flight takes place 38 years after the C-5 Galaxy’s maiden flight, June 30, 1968.
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LUNGI, Sierra Leone -- A C-5 Galaxy, with the 301st Airlift Squadron, Travis Air Force Base, Calif., departs for Naval Air Station Keflavik, Iceland, carrying 398th Air Expeditionary Group personnel and equipment that have been supporting efforts in Liberia. (U.S. Air Force photo by Tech. Sgt. Justin D. Pyle)
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ROYAL AIR FORCE, MILDENHALL, England -- A Force C-5 Galaxy arrives at here, April 22, 1999. The C-5 is delivering four fuel trucks to help the fuels management flight of the 100th Supply Squadron keep up with the increasing demand to fuel more KC-135R Stratotankers for Operation Allied Force. (U.S. Air Force photo by Tech. Sgt. Brad Fallin)
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FILE PHOTO -- A C-5 Galaxy transport prepares to launch from Aviano Air Base, Italy. The C-5 is one of the many aircraft at Aviano supporting NATO's Operation Allied Force. (U.S. Air Force photo by Senior Airman Delia A. Castillo)
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1990's -- A C-5 being loaded for an airlift to deliver cargo to troops in the desert during Desert Storm.
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A C-5A Galaxy from the 68th Airlift Squadron in San Antonio waits for its passengers at Homestead Air Reserve Base, Fla., in 2006. The C-5 crew flew reservists and equipment from the 482nd Fighter Wing in support of exercise Cactus Aloha at Hickam AFB, Hawaii, (U.S. Air Force photo/Lt. Col. Thomas Davis)
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The C-5 Galaxy is one of the largest aircraft in the world. This workhorse is part of a modernization program to extend the life of the aircraft into the 21st century. (U.S. Air Force illustration)
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Mission
The gigantic C-5 Galaxy, with its tremendous payload capability, provides the Air Mobility Command airlift in support of United States national defense. The C-5 can carry fully equipped combat-ready military units to any point in the world on short notice and then provide field support required to help sustain the fighting force.

Features
The C-5 is one of the largest aircraft in the world and the largest airlifter in the Air Force inventory. The C-5 can carry more than any other airlifter. It has the ability to carry 36 standard pallets and up to 81 troops simultaneously. The Galaxy also carries all of the Army's air-transportable combat equipment, including such bulky items as its 74-ton mobile scissors bridge from the United States to any theater of combat on the globe. It can also carry outsize and oversize cargo intercontinental ranges and can take off or land in relatively short distances. Ground crews are able to load and off-load the C-5 simultaneously at the front and rear cargo openings, reducing cargo transfer times. Other features of the C-5 are:
  • Able to operate on runways 6,000 feet long (1,829 meters)
  • Five landing gear totaling 28 wheels to distribute the weight.
  • Nose and aft doors that open the full width and height of the cargo compartment to permit faster and easier loading.
  • A "kneeling" landing gear system that permits lowering of the parked aircraft so the cargo floor is at truck-bed height or to facilitate vehicle loading and unloading.
  • Full width drive-on ramps at each end for loading double rows of vehicles.
  • A system that records and analyzes information and detects malfunctions in more than 800 test points.
The C-5 has the distinctive high T-tail, 25-degree wing sweep, and four TF39 turbofan engines mounted on pylons beneath the wings. These engines are rated at 43,000 pounds of thrust each, and weigh 7,900 pounds (3,555 kilograms) each. They have an air intake diameter of more than 8.5 feet (2.6 meters). Each engine pod is nearly 27 feet long (8.2 meters).

The Galaxy has 12 internal wing tanks with a total capacity of 51,150 gallons (194,370 liters) of fuel -- enough to fill 6 1/2 regular size railroad tank cars. A full fuel load weighs 332,500 pounds (150,820 kilograms). A C-5 with a cargo load of 270,000 pounds (122,472 kilograms) can fly 2,150 nautical miles, offload, and fly to a second base 500 nautical miles away from the original destination -- all without aerial refueling. With aerial refueling, the aircraft's range is limited only by crew endurance.

Background
Lockheed-Georgia Co. delivered the first operational Galaxy to the 437th Airlift Wing, Charleston Air Force Base, S.C., in June l970. C-5s are operated by active-duty, Reserve, and Air National Guard crews. They are currently stationed at Dover AFB, Del.; Travis AFB, Calif.; Lackland AFB, Texas; Stewart Air National Guard Base, N.Y.; Martinsburg ANGB, W.V.; Memphis ANGB, Tenn.; Wright-Patterson AFB, Ohio and Westover Air Reserve Base, Mass.

In March 1989, the last of 50 C-5B aircraft was added to the 76 C-5As in the Air Force's airlift force structure. The C-5B includes all C-5A improvements as well as more than 100 additional system modifications to improve reliability and maintainability.

Based on a study showing 80 percent of the C-5 airframe service life remaining, AMC began an aggressive program to modernize the C-5. The C-5 Avionics Modernization Program began in 1998 and includes upgrading avionics to communications, navigation, surveillance/air traffic management compliance, improving navigation, communication, and safety equipment, and installing a new autopilot system.

Another part of the modernization plan is a comprehensive Re-engining and Reliability Program. The centerpiece of this program is the General Electric CF6-80C2 commercial engine. This engine delivers a 22 percent increase in thrust to the C-5M, a 30 percent shorter take-off roll, has a 58 percent faster climb rate and will allow significantly more cargo to be carried over longer distances. With its new engine and upgrades, the C-5 becomes the C-5M Super Galaxy.

This modernization program will enhance aircraft reliability and maintainability, maintain structural and system integrity, reduce cost of ownership and increase operational capability well into the 21st century.

General Characteristics
Primary Function: Outsize cargo transport
Prime Contractor: Lockheed-Georgia Co.
Power Plant: Four General Electric TF-39 engines
Thrust: 43,000 pounds, each engine
Wingspan: 222.9 feet (67.89 meters)
Length: 247.1 feet (75.3 meters)
Height: 65.1 feet (19.84 meters)
Cargo Compartment: height , 13.5 feet (4.11 meters); width, 19 feet (5.79 meters); length, 143 feet, 9 in (43.8 meters)
Pallet Positions: 36
Maximum Cargo: 270,000 pounds (122,472 kilograms)
Maximum Takeoff Weight: 769,000 pounds (348,818 kilograms) (peacetime), 840,000 pounds (381,024 kilograms) (wartime)
Speed: 518 mph (.77 Mach)
Range: 6,320 nautical miles without air refueling; unlimited with in-flight refueling
Crew: 7 (pilot, co-pilot, two flight engineers and three loadmasters)
Unit Cost: C-5A - $152.8 million (fiscal 1998 constant dollars); C-5B - $179 million (fiscal 1998 constant dollars); Modification unit cost, $90 million (fiscal 2009 constant dollars)
Deployed: C-5A - 1969, C-5B - 1980, C-5M - 2009
Inventory: Total force, 111; C-5A, 59, C-5B, 47, C-5C, 2, C-5M, 3
http://www.defense.gov/registeredsites/registeredsites.aspx
 
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C-5M Super Galaxy theo như bên Wiki giải thích:

"Another part of the plan is a comprehensive Reliability Enhancement and Re-engining Program (RERP), which includes new General Electric CF6-80C2 engines, pylons and auxiliary power units, with upgrades to aircraft skin and frame, landing gear, cockpit and the pressurization system.[sup] [/sup] The CF6 engine produces 22% more thrust (for 50,000 lbf/220 kN total from each engine) than existing C-5 engines, which will result in a 30% shorter takeoff roll, a 38% higher climb rate to initial altitude, a significantly increased cargo load, and a longer range between refueling.[sup] [/sup]The C-5s that complete these upgrades are designated C-5M Super Galaxy.

The C-5 AMP and RERP modernization programs plan to raise mission-capable rate to a minimum goal of 75%. Over the next 40 years, the U.S. Air Force estimates the C-5M will save over $20 billion. The first C-5M conversion was completed on 16 May 2006, and performed its first flight on 19 June 2006. C-5Ms have been in flight testing out of Dobbins Air Reserve Base since June 2006. Test aircraft include a distinctively colored nose boom to acquire flight data.

The USAF decided to convert remaining C-5Bs and C-5Cs into C-5Ms with avionics upgrades and re-engining in February 2008. The C-5As will receive only the avionics upgrades. The three test C-5Ms successfully completed developmental flight testing in August 2008. The test aircraft will begin Operational Test and Evaluation in September 2009. The RERP upgrade program is to be completed in 2016.

Lockheed Martin announced that a C-5M test flight on 13 September 2009, set 41 new records. The flight's data have been submitted to the National Aeronautic Association for formal acceptance. The C-5M carried a payload of 176,610 lb (80,110 kg) to over 41,100 ft (12,500 m) in 23 minutes, 59 seconds. The flight set 33 time to climb records at various payload classes, and broke the world record for greatest payload to 6,562 feet (2,000 meters). The aircraft used for this flight had a takeoff weight of 649,680 lb (294,690 kg), which included payload, fuel and crew.

A total of 52 C-5s are contracted to be modernized, consisting of 49 B-, two C- and one A-model aircraft through the Reliability Enhancement and Re-Engining Program (RERP). Over 70 changes and upgrades are incorporated in the program, including newer, quieter, General Electric engines which increase reliability and make the Super Galaxy 10 percent more fuel efficient than legacy C-5s. Five C-5M Super Galaxies have been produced.[sup]"[/sup]


Hầu hết mấy chiếc C-5 cũ đã có 80% thời gian tuổi đời phục vụ. Cho nên nâng cấp lên thành C-5M Super Galaxy cũng hợp lý. Động cơ cũ là General Electric TF39-GE-1C high-bypass turbofan, chỉ đạt được 43,000 lbf (190 kN). Động cơ mới đạt 50,000 lbf (220 kN). Không quân Mỹ dự tính nâng cấp 52 chiếc C-5 lên C-5M.


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Cockpit mới

Nếu được tiếp dầu trên không thì bay liên tục cho tới khi kíp bay... hết xíu quách. :D

Sức tải của C-5M Super Galaxy được quảng cáo là 129 tấn mà tại sao có 1 số trang mạng bảo là có thể chở được 2 chiếc M1? (2 x 68 = 136 tấn) Vị chi cũng có thể là: 1) con số Maximum cũng còn có thể ráng lên 10-15% nữa trước khi quá tải, 2) anh Mỹ dấu đầu lòi đuôi, cố tình báo nhỏ nhưng chở nhiều (ví dụ như 5 chiếc C-5M gửi đến chiến trường coi như mang theo 5 chiếc M1A2, nhưng thật sự tới... 10 chiếc).

http://www.airforcetimes.com/news/2009/04/airforce_c5m_dover_042909/
http://air-attack.com/page/63/C-5-Galaxy.html

Đặc biệt nhất là C-5M bây giờ có thể cất cánh trên đường băng trong vòng 1500 feet (457 m), trước đó thì phải cần 3000-4000 feet (914-1220 m). Điều này rất thích hợp cho các sân bay tiền tuyến.
 
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xxmagicxx nói:
Thanks bác Rongbay! Vậy mà sách báo cũ của em, kể cả báo "Liên Xô" in màu rất đẹp cũng đều nói An-124 chở đến 170t - gần gấp rưỡi C-5. Nổ hết biết!
- 170 tấn nghe nói là "kỷ lục" gì đó thôi (không ai làm chứng). Cũng như Mig-25, quảng cáo là bay tới Mach 3.2, nhưng đó là chỉ trong vòng vài giây. Phi công Mig-25 được nhắc nhở là nên bay dưới Mach 2.8 thôi. Cao hơn là có thể nổ máy, giống như 1 chiếc đã từng bị khi bay trên bầu trời Israel.
 
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Theo tinh thần bác Rongbay nói thì em ko nghỉ AN 225 chỡ max được 250 tấn như Nga từng tuyên bố vì em nó dùng engine chung với AN 124, mà AN 124 đời đầu , engines chỉ có thể tải được 122 tấn hàng. AN 225 gắn thêm hai động cơ cùng loại,+ tự trọng máy bay to hơn nên em nghỉ max payload cùng lắm là 200 tấn
 
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U.S. Army Staff Sgt. David Duhart assess the security during a mission to a vocational school in Farah City in Afghanistan's Farah province, Aug. 17, 2011. Duhart, a member of Provincial Reconstruction Team Farah, is assigned to the 182nd Infantry Division's Company C, 1st Batallion. U.S. Air Force photo by Senior Airman Alexandra Hoachlander


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U.S. Army soldiers train an Iraqi soldier on close-quarters movement during a week of marksmanship training at an Iraqi military post near Contingency Operating Base, Speicher, Iraq, Aug. 18. The Iraqi soldiers learned advanced marksmanship techniques, and how to enter and clear a room in an urban environment. The U.S. soldiers are assigned to the the 1st Cavalry Division's Company B, 1st Battalion, 5th Cavalry Regiment, 2nd Advise and Assist Brigade. U.S. Army photo by Spc. Crystal Hudson
 
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08/18/2011
[h4]LETTER TRANSLATION[/h4] U.S. Navy Lt. Patrick King writes the English translation of a letter left two days prior by enemy insurgents in the village of Khani Kalay in the western Sarobi district of Afghanistan's Paktika province, Aug. 16, 2011. King met with the Afghan police to assist Afghan people in establishing long-term stability and countering insurgents. King is the Paktika Provincial Reconstruction Team Orgun Detachment operations officer. U.S. Air Force photo by Staff Sgt. Makenzie Lang
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08/17/2011
[h4]COMMANDER'S THUMP[/h4] U.S. Marine Corps Gen. John R. Allen, commander of U.S. and international forces in Afghanistan, gives a soldier a thump on his body armor at Forward Operating Base Ghazni, Aug. 15, 2011. During Allen's battlefield circulation of Regional Command East, he received several operational briefings, met with the Ghazni provincial governor, and thanked U.S., Polish and Afghan troops and civilians for their commitment. U.S. Air Force photo by Master Sgt. Michael O'Connor
 
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Gia_Định nói:
Mỹ - Afghanistan
http://laodong.com.vn/Tin...anistan-den-2024/55408

@ Grenade rảnh thì coi
International Security Assistance Force

... một thiếu nữ Afghanistan khá xinh bị Taliban xẻo mũi vì yêu đương sao đó gây chấn động thế giới
đã được các Bác sĩ Âu-Mỹ đại tu lại :
http://incognito73.instab...s-new-prosthetic-nose/
thiếu nữ này bị xẽo mũi vì dám bỏ trốn tụi taliban, ba cô ta thiếu nợ nên đem bán cô bé 12 tuổi này để trả nợ
 
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08/02/2011
[h4]ROBOT REVIEW[/h4] U.S. Army Spc. Andrew B. Clemen gets a refresher course on a Pacbot 310 EOD robot at Combat Outpost Honaker-Miracle in eastern Afghanistan's Kunar province, Aug. 1, 2011. Clement is an explosive ordnance disposal technician assigned to the 25th Infantry Division's 129th Ordnance Company, 3rd Brigade Combat Team. U.S. Army photo by Sgt. 1st Class Mark Burrell