The wing design also adopts static balance aluminum alloy aileron and improved Fuller aluminum alloy trailing edge flap. There is a simple hinged aluminum spoiler in front of the flap without a trim tab. The inside of the leading edge of the wing is a sealed flap, and the outside is a slotted flap. Aileron and trailing edge flap are driven by hydraulic servo actuators. Fuller trailing edge flap and leading edge slat are driven by ball screw brake and torque tube. The tail wing adopts cantilever all-metal T-shaped structure, which is composed of single-chamber box members and all-metal skin panels. The horizontal tail has a slight dihedral angle, which is installed at the top of the vertical tail, and there is a slender instrument cabin with two sharp angles in front. The installation angle of horizontal stabilizer is driven by hydraulic screw actuator. The rudder and elevator are driven by hydraulic servo actuators. The elevator is divided into four sections and the rudder is divided into two sections. There is no label.
The fuselage is a semi-rigid damage safety structure composed of skin, stringer and partition frame, and its cross section is "8". The cargo hold is head-to-tail straight-through, and its floor height is adapted to the height of the truck body. It can drop goods and parachutes. The static tail inclination of the ground is 10, and the high-strength aluminum alloys used are 7049-T73, 7050-T736, 7050-T73, 7475, etc.
Adopt five-strut landing gear for hydraulic retraction. The front landing gear is retracted backward by the ball screw driven by hydraulic pressure, and the main landing gear is retracted inward after rotating 90 degrees by hydraulic pressure. Both the nose landing gear strut and the main landing gear strut have dual-cavity oil-gas shock absorbers. The landing gear has 28 wheels: the nose gear has 4 wheels, and the four main landing gears have 2 wheels on each side. Each main landing gear has six wheels arranged in a triangle, and the rotation of casters behind the main landing gear can help the aircraft turn on the ground. The tire size is 49 cm in diameter and the thickness is 17 to 20 cm. The front tire pressure is 9.45× 105 Pa (9.64 kg/cm2) and the main tire pressure is 7.65× 105 Pa (7.80 kg/cm2). At the same time, an anti-skid device is installed. There are seats for driver and co-pilot, random engineer, navigator and cargo handler in the cockpit, and the nose cover under the cockpit can be opened upwards to load and unload goods from the front and rear cargo doors at the same time.
The cargo hold is 36 meters long, 4 meters high and 6 meters wide. It is straight from head to tail, and its floor height is adapted to the height of the truck body. There are cargo airdrops and paratroopers airborne equipment on board, which can airdrop both cargo and paratroopers. The engine room is divided into two floors. There is a door for 15 people to rest in front of the upper deck, and 75 soldiers can be carried behind. The lower main cargo hold can hold 270 soldiers. When loading and unloading goods on the ground, the fuselage panels on both sides of the stern cargo bridge can be opened outward to increase the size of the stern door. There is a hatch on the front left side of the fuselage and a hatch on the left and right sides of the tail of the fuselage. The cockpit, all cargo holds and cabins are equipped with air conditioning and pressurization system.
When transporting goods, there are mainly the following schemes: two M 1 tanks, 16 3 ton trucks; Six AH-64 helicopter gunships, 10 Pershing medium-range surface-to-surface missiles and their launch vehicles, and 36 standard pallets. The C-5 is powered by four TF39-GE- 1C turbofan engines of General Dynamics (GE) of the United States, and the single thrust is191.2kn.. C-5 engines are surprisingly large, each engine weighs 3555 kilograms, and the inlet diameter exceeds 2.6 meters. The length of each engine is about 8.2 meters. The engine can also provide reverse thrust, increase the landing rate of aircraft in the air and reduce the taxiing distance on the ground. The generator of each engine can independently provide the power needed by the aircraft, and the power generated by four generators can supply the power demand of a city with a population of 50,000. 1985 September 10 The C-5B, which made its first flight, adopted an engine with greater thrust and its load capacity was increased.
There are 12 integral fuel tanks between the front and rear beams of the whole wing, with the total oil quantity194370l and the weight166t. These fuels can be filled with six standard train tankers or two KC- 135 tankers. The weight of fully loaded oil is 150820kg. A C-5 carrying 122000 kg can fly 4000 km without aerial refueling, and after unloading, it can fly to a base 900 km away from the first destination. The C-5 is equipped with the standard communication and navigation equipment of the US military, the color display weather radar of Bendiks Company, three sets of inertial navigation equipment of Delcaux Company, and special equipment including the latest multifunctional electronic detection and its analysis and recording subsystem, which can scan and analyze more than 800 test points at the same time, as well as the in-flight fault analysis, maintenance and recording system.
In 2002, the C-5B transport aircraft upgraded its electronic equipment, equipped with a new digital automatic flight control system, a new LCD flat panel display and a new navigation/communication system, and also installed a traffic warning and collision avoidance system and a terrain perception and early warning system. In June165438+1October of the same year, Lockheed Martin completed the installation of all C-5 traffic collision avoidance early warning systems (TCAS) in the US Air Force fleet. The installation of TCAS is an integral part of the modernization improvement plan of C-5 avionics. TCAS can identify adjacent aircraft and show pilots the plan to avoid collision, thus greatly reducing the possibility of air traffic accidents. The innovative technology adopted by the US Air Force on the C-5 transport aircraft gives it new strategic airlift capability. The C-5 is the first transport aircraft with an aerial oil pipe, which can fly around the world without landing. Because it can receive oil in the air, its voyage is only limited by the endurance of the crew. Its advanced landing gear enables it to take off and land at airports all over the world, including airports with harsh conditions.
C-5 has high transportation flexibility, and wheeled and tracked vehicles can enter and leave the cargo hold by their own power, thus making the loading and unloading of heavy equipment fast and convenient. In order to load and unload all kinds of military goods, the nose cover and rear hatch of C-5 transport aircraft can be opened to fully expose the cargo hold. Comprehensive ro-ro ramps are installed at both ends of the cargo hold to facilitate loading and unloading of two rows of wheeled or tracked vehicles. The full-width ramps at both ends can load two rows of vehicles at the same time.
The C-5 transport plane is equipped with a "kneeling" system, which can raise or lower the plane floor (as well as the cargo floor and gangway angle) to meet the cargo loading requirements. Kneeling landing gear system can reduce the height of C-5 transport aircraft from 3 meters above the ground to about 1 meter, make the cargo floor equal to the height of the vehicle, and reduce the loading and unloading difficulty of wheeled and tracked vehicles.
The floor of the cargo hold is equipped with a roller system, which is convenient for loading and unloading pallets quickly. Tray rollers, guide rails and brakes are a part of the whole floor, which can be folded up when not in use to keep the floor level. The pressure of the floor support of C-5 is the same as that of the whole floor, and there is no need to use rutting bridge or special treatment. C-5 can also be airdropped, and the rear hatch is used to airdrop vehicles and equipment. Hatches on both sides of the fuselage are used to transport paratroopers.
The C-5 transport aircraft can carry almost all the combat equipment of the US military, including main battle tanks, helicopters and the Army's 74-ton motorized scissor bridge, and transport it from the United States to any battlefield in the world.