This is an airplane. What's its name?

The US military CH-47 Chinook medium-sized transport helicopter CH-47 Chinook medium-sized transport helicopter is an all-weather medium-sized transport helicopter with two rotors (which can complete tasks in harsh high temperature and plateau climate conditions) developed by the famous American Boeing Helicopter Company for the US Army. This model was developed in 1956, and the CH-47A model was equipped with the US military in 1963, and then the B, C and D models were developed. At present, it is still undergoing modernization. CH-47 is the main transport helicopter of the US military and the only medium-sized transport helicopter. At present, the most equipped are Type C and Type D. Among them, CH-47D is the main air transport helicopter of the US Army at the beginning of the next century. China Taiwan Province Province also purchased several CH-47D helicopters to equip the aviation brigade and the Marine Corps. At present, the next procurement plan with the United States is also being implemented. Main modification: CH-47B, which is a development type of CH-47A, is equipped with two T55-L-7C turboshaft engines, 2 125kW, totally 108 units produced by the US military. The CH-47C model is an improvement of the ch-47 b model, which mainly strengthens the transmission system, replaces the engine with higher power, changes the rotor from the original metal blades to FRP, and adds an anti-destruction fuel tank, so that Chinook can take off at an altitude of1220m and a temperature of 35℃, with an external load of 6,800kg and an activity radius of 56km. CH-47D is the latest helicopter that Boeing Company of the United States made 13 major improvement on Chinook in order to meet the new tactical requirements of the US Army. Including the replacement of high-power engines, greatly improved transmission power, the use of stronger rotor blades, cockpit-compatible night vision goggles, advanced hydraulic and automatic flight control systems, and so on. Performance characteristics: 1. Strong adaptability. It has all-weather flight capability and can complete tasks under harsh high temperature and plateau climate conditions. It can refuel in the air and has long-distance support ability. The upper fuselage of some models is watertight, which can take off and land on water. 2. Strong transportation capacity. It can carry 33 ~ 35 armed soldiers, or 1 artillery platoon, and can also carry large equipment such as artillery. 3. It has certain anti-damage ability, and its FRP blades can still return to the base safely even if they are hit by 23mm armor-piercing bullets and high-explosive incendiary bombs. Basic data: rotor diameter 18.79m, fuselage length 15.54m, width 3.78m (rotor folded), height 5.68m, empty weight 10500kg, and internal payload 6510. The maximum level flying speed is 29 1 km/h, the maximum climbing rate is 6.77 m/s (sea level), the mission radius is 55.5 km, and the transition range is 2059 km. Operational application: During the Vietnam War, CH-47 was widely used in the United States to perform tasks such as force maneuvering, artillery lifting and material transportation, and played an important role in the aircraft landing operations widely carried out by the US military. In the Gulf War, it was widely used to establish refueling and ammunition supply stations, support deep combat, perform long-range rescue and other tasks. On the first day of ground combat, 595,526 liters of fuel and a large amount of ammunition, food and water were transported to the ground troops, and howitzers were airlifted to the ground troops. The aircraft is mainly equipped with US troops 10 1 air assault division. In the ground combat stage of the Gulf War, the division used a large number of Chinook transport helicopters when it made a large-scale maneuver from south to north and landed behind the Iraqi forward position. CH47D transport helicopter lacks global positioning and navigation system, so it is difficult to achieve accurate navigation in desert environment with no obvious characteristics. In addition, the rotor blades, engines and lubricating oil radiators of aircraft are all eroded by sandstorms. During the Kosovo war, the United States used this aircraft to deploy peacekeeping troops and transport materials, which played an important role in its rapid entry into Kosovo. Identification characteristics: 1. There are two pairs of 3-blade rotors with opposite rotation directions, which are arranged at the front and rear respectively. The rear rotor tower is higher and has a larger radial dimension, which plays the role of vertical tail. At its root, two engines are symmetrically arranged. 2. The fuselage is a semi-hard shell structure with a square cross section. The cockpit, engine room, rear fuselage and rotor tower are basically metal structures. There is a cargo springboard and a hatch at the back of the fuselage. 3. Non-retractable four-wheel landing gear is adopted, and both front landing gears are two wheels. The two rear landing gears are single wheels. The CH-47 is very similar to the CH-46 equipped by the US Marine Corps. The main difference lies in the shape of the engine. The former is located on both sides of the front of the rear rotor tower and exposed, while the CH-46 is built-in and only has exhaust holes at the same position. Reasons for upgrading CH-47D Chinook Helicopter in the US Army Chinook Helicopter Upgrade Plan CH-47 Chinook Helicopter has been frequently used by US special forces and regular troops, but the current Chinook helicopter has become aging and the maintenance and use costs are increasing day by day. Therefore, the US Army launched the upgrade plan of the CH-47F improved helicopter, which can extend the life of the aging Chinook helicopter for another 20 years. From 1982 to 1994, Boeing upgraded CH-47A, CH-47B and CH-47C successively until CH-47-D Chinook helicopter. When a helicopter reaches its service life of 20 years, its fuselage, avionics and other subsystems often have problems. Aging wires and connectors often cause failures. During his stay in Afghanistan, CH-47D Chinook helicopter often carried out transportation tasks that Black Hawk helicopter could not carry out, but it could not meet the transportation needs of the army. The CH-47D can transport 15000 pounds of cargo within 30 nautical miles, while the total weight of the M 198 howitzer and its batteries and equipment currently used by the Army is about 16000 pounds, which has greatly exceeded the transport capacity of the CH-47D Chinook helicopter. Upgrade objectives and expected progress After the "Desert Storm" operation, the Army plans to upgrade the CH-47 to have a four-leaf propeller, a new engine and all integrated electronic equipment. However, after argumentation, the cost of the plan is huge and the military budget is unbearable. The upgrade plan of CH-47F is much more realistic. The main work will be to replace brand-new wiring and connectors, and to replace transmission, propeller blades and engine. Although the goal of the upgrade plan is to save the use and maintenance costs of Chinook helicopters, the Pentagon is still conducting a rigorous and detailed review of the plan because of its high cost. But the upgrade is still going on as planned, because other alternative products are bound to be more expensive. According to the estimation of the Office of the Secretary of Defense, the cost of each CH-47F Chinook helicopter is about 22 million US dollars, and it is estimated that it can serve in the army at least until 2033, 77 years earlier than the first Chinook helicopter was put into use. The upgrade plan requires that 300 of the 433 CH-47D Chinook helicopters owned by the Army be upgraded to CH-47F. The first CH-47F Chinook helicopter was originally produced at a low speed and is expected to be delivered in 2004. In May this year, Boeing delivered the first CH-47F Chinook helicopter with serial number 8002 to the US Army, which is one of the two prototypes required in the upgrade plan. Both types of helicopters underwent flight and system verification tests last year. Boeing estimates that its factory in Philadelphia can upgrade at least four helicopters every month. The current upgrade plan requires that the upgrade speed be increased from 7 in 2003 to 27 in 2009. Finally, 20 16 is 29. The Army estimates that this upgrade can reduce the operating cost of the CH-47D Chinook helicopter from $2,526/hour to $65,438+$0.895/hour for the CH-47F helicopter. In addition, CH-47F helicopter can transport more cargo at high altitude and share information with other platforms. Vibration is a prominent problem of CH-47D Chinook helicopter. This upgrade will adjust the fuselage to make it more rigid, which not only reduces the vibration, but also reduces the weight of the vibration suppression system. Because the rigid part of the fuselage is mostly located in the upper part of the front end, the CH-47F adopts a brand-new cockpit. Lower vibration can reduce the use and maintenance costs and improve the reliability of avionics and control systems. By checking the fuselage for cracks and corrosion, the staff will make necessary repairs. In addition, the production line used by CH-47F is still the original assembly line. The tail rotor of CH-47F is easier to disassemble and assemble, which is convenient for rapid deployment. The original upgrade plan required the CH-47F to use the existing transmission unchanged. However, the army later agreed to check the gearbox. Although the transmission capacity of CH-47D Chinook helicopter is 7,500 horsepower, it can meet the current air transport demand of the Army. However, the military also hopes that the helicopter can have higher launch power to meet future demand. At present, the staff is upgrading T55-L-7 12 turbine shaft produced by Hanewell Company with 3750 shaft horsepower to T55-GA-7 14A standard turbine shaft with 4867 shaft horsepower. This enables CH-47F to transport16,000 lb howitzer and its battery pack, and the transportation distance can be increased to 100 nautical mile, which is more than three times the demand of the army. Although the power of the CH-47F Chinook helicopter has increased, its total weight is still 50,000 pounds, which is the same as that of the CH-47D helicopter. Chinook helicopters used in special operations and export helicopters now cost about 54,000 pounds. At the front end, the glass cockpit introduced by CH-47F is not as complicated as the export Chinook or the new UH-60M Black Hawk helicopter cockpit. Boeing Company integrates the crew console of Chinook helicopter and the hardware and software of Locke Will Collins Company on the data bus conforming to MIL-STD 1553B standard. On the central console, each pilot has a control display device in front of him, through which the crew can manage the whole system and realize communication and navigation. CH-47F has two GPS/INS navigators, which can display digital maps and provide vertical speed information. The CH-47F is also equipped with an improved data modem, which can receive commands and situation reports from air or ground platforms. Its communication equipment includes: an ARC- 164 UHF AM transceiver equipped with "Have Quick II" frequency hopping device, two ARC-20 1D VHF FM transceivers, an ARC- 186 VHF AM/FM transceiver and an ARC-220 UHF transceiver. The electronic countermeasure device of CH-47F is the same as that of CH-47D, however, it will be equipped with a second set of M 130 flash chaff spreader, and its data bus also allows the installation of integrated RF electronic countermeasure kit (SIIRCM) and integrated infrared countermeasure kit (SIIRCM). Under the condition of reducing vibration, the digital electronic components in CH-47F can obtain higher reliability and reduce the use and maintenance costs. However, in order to control the cost and reduce the difficulty of integration, CH-47F still uses the existing electromechanical instruments to display engine parameters. Although CH-47F uses a new data bus, it is still not equipped with a forward-looking infrared night vision sensor. According to the plan, 1 batch of 7 CH-47F chinook helicopters will be upgraded to MH-47G helicopters, with larger fuel tanks, aerial refueling pipes, multi-mode radars and new public avionics including color multi-function displays. Lockheed Will Collins avionics architecture system will be used to standardize MH-47, MH-60 and A/MH-6 avionics software. Boeing is responsible for integrating the software into the cockpit of MH-47G helicopter. The simulated flight control computer of CH-47F is still the same as that of CH-47D, but in the second batch of CH-47F, more advanced and supportable digital computers will be used.