New high-efficiency car door products mainly for residential elevators and security room elevator markets
Wittur Door System,Door System Closer,Telescopic Elevator Door,Concealed Sliding Door Suzhou Keffran Parts Co.,ltd , https://www.keffran-elevatorsmart.com
The aero engine is hailed as the "crown jewel in the aircraft industry". As the "heart" of the aircraft, every year, China's commercial aircraft imported from Airbus and Boeing need to load a larger number of engines. These engines are basically It is supplied by GE (General Electric), Luo Luo and Pratt & Whitney, the world's three largest engine suppliers.
At present, although China's military aircraft are already equipped with domestic engines, the domestic passenger aircraft Xinzhou 60 and ARJ21 still use foreign engines, and some of the key bypass technologies of large turbofan engines are still to be overcome.
Large gap with foreign countries
"The engine can be said to be the most technically difficult part of aircraft development, and its value is naturally higher. The average engine price can account for 25% to 30% of the stand-alone cost." Aircraft manufacturing experts who have participated in the development of many domestic aircraft. Zhou Jisheng told the First Financial Reporter that at present, the engine manufacturing of commercial aircraft is mainly monopolized by the three engine manufacturers of GE, Luo-Ro and Pratt & Whitney.
Zhou Jisheng pointed out that although China's military aircraft can already be equipped with domestic military engines, the gap is still relatively large compared with foreign engines. "The gap is multi-faceted, including craft, metallurgy, design, manufacturing, etc." Compared with the engine, the requirements for safety, reliability and economy of the civil engine are even higher, and the manufacturing is more complicated.
According to the reporter, the development of the engine is very difficult, and the development time is long. It takes 15 years from development to production. Most developed countries are strictly forbidden to transfer the core technology of aviation engines to foreign countries, even among Western countries.
As early as July 2012, the “12th Five-Year National Strategic Emerging Industry Development Plan†listed the aviation equipment industry as the first project in the high-end equipment manufacturing industry, clearly proposing to break through the core of the aviation engine. Technology to accelerate the industrialization of aviation engines.
In the "battle" of the big cake in the engine market, AVIC, which has been responsible for the development of Chinese military aircraft and civil aircraft parts, has been accelerating its breakthrough and layout in the aero engine industry in recent years, and has also tried to pass The way overseas acquisitions are to accelerate the acquisition of advanced foreign engine technology. For example, China Aviation Technology International Holdings Co., Ltd. has completed the acquisition of Continental Engine Company and German Thielert Aviation Piston Engine Company. As a result, it is the only supplier in the world with a full range of aviation petrol piston engines and a full range of aviation kerosene piston engines, which are mainly used in the general aviation market.
In order to better and faster develop the Chinese aero engine industry, which is obviously in short-term, in August this year, AVIC’s engine business assets were divested from AVIC and injected into a new aero engine company to realize aircraft main engine and engine production. Separation.
The newly established China Aviation Engine Group is currently the actual controller of related engine companies such as Chengfa Technology (600391.SH), AVIC Power (600893.SH), and China Aviation Dynamic Control (000738.SZ), and is responsible for aviation engines and gas turbines. Major national science and technology special tasks.
Support for funds and talents
At the Zhuhai Air Show held in November this year, the newly established China Aviation Engine Group (hereinafter referred to as “China Aviationâ€) participated for the first time to show the public the important products and key technology development achievements of China Aerospace in related fields.
For example, "Yulong", "Golden Sand" and the 1600kW three-type turboshaft engine were first unveiled in kind. The "Yulong" engine is China's first fully developed turboshaft engine with independent intellectual property rights, equipped with a new generation of 5.5-ton helicopters. The "Golden Sands" engine is based on a self-developed turboshaft engine. The development of civil technology verification machine for airworthiness key technology exploration and research; 1600kW turboshaft engine is a high-power advanced turboshaft engine independently developed through integration and innovation, its appearance fills the domestic power class turboshaft engine type spectrum Whitespace.
In addition, the well-known "Taihang" turbofan engine also appeared in the engine and gas turbine exhibition area. This is a high-performance, high-thrust afterburner turbofan engine developed by China with independent intellectual property rights, as well as the turboshaft-16 engine and civilian large. The ducted ratio turbofan engine and the RO11O heavy-duty gas turbine were exhibited by models. Among them, the vortex shaft -16 is based on the principle of the lowest life-cycle cost in development, and has the characteristics of low fuel consumption and high reliability. It is suitable for 7~8 ton dual-engine helicopters and 13-ton three-engine helicopters; RO11O heavy-duty gas turbines are A civil single-axis, front-output industrial gas turbine for power generation, used for basic load power supply or peak load peak shaving, filling the gap in China's independent research and development of industrial heavy-duty gas turbines.
In the notice of the 13th Five-Year National Strategic Emerging Industry Development Plan issued by the State Council, it is clearly proposed to develop a 1000-kilowatt turboshaft engine and a 5000-kilowatt turboprop engine to meet the power requirements of domestic serialized helicopters and medium-sized transport aircraft; Heavy-duty piston engines and turbine engines that use aero-biofuels advance the market for small engines. This also provides a key direction for the development of China's domestically produced engines in the future.
"Expected special funds of 100 billion yuan, plus matching funds, we believe that the aviation engine support funds in the next five years will exceed 200 billion yuan, with strong support from policies and funds, the entire aero engine industry will enter a historical opportunity period in the next five years. The report of Northeast Securities (12.340, -0.03, -0.24%) predicts that the United States has invested 100 billion US dollars in the aero engine industry over the past 50 years.
In addition to funds, talent is also an essential part of the ring. Chen Shaoyang, deputy general manager and party member of China Aviation Development Corporation, which currently has 6 academicians and more than 230 national experts and scholars, pointed out that China Aviation Development Corporation must stimulate innovation and cultivate innovative scientific and technological talents. In a good environment, we will vigorously introduce high-level talents at home and abroad, actively attract foreign students to return to China to work or serve, and invite and welcome domestic and foreign talents to come to China Aviation Development Corporation to start a business. At the same time, we will expand cooperation with private enterprises and improve the aviation engine industry chain through market mechanisms. In addition, we will promote cooperation and joint research and development with foreign counterparts, and carry out cooperation projects with high technical content, high value and high integration.
Safe and reliable
The car door comes standard with car door lock and emergency unlocking device, which meets the latest EN81-20/50 standard and the latest GB7588-2003 No. 1 amendment.
Compared with car door locks of other manufacturers, Wittur car door locks are easier to use, safer and more reliable.
Compact design
The drive part of the door machine adopts the matched Wittur Augusta Prime mechanical design, the overall mechanism is compact, and the system stability is better. The toothed belt of the motor is installed in a relatively closed space, which can be better protected to prevent foreign matter from entering the transmission device.
Lower energy consumption
Brushless motor is adopted, which has low power consumption and is easy to control.
Easy to install
The relatively compact and simple design concept of the driving part of the door machine makes the overall weight of the door machine very light, which is convenient for on-site installation and debugging.
China's aviation industry heart disease: engine development is a shortcoming between the short board and foreign countries
Abstract In the notice of the 13th Five-Year National Strategic Emerging Industry Development Plan issued by the State Council, the independent development of aviation engines was accelerated. Like domestic trunk aircraft, the development of domestic aircraft engines, as a key strategic industry in China...
In the notice of the “13th Five-Year Plan†for the development of strategic emerging industries in the State Council issued by the State Council, accelerate the independent development of aviation engines. Like domestic trunk aircraft, the development of domestic aircraft engines, as a short-board in China's strategically key industries, has always been a heart disease in China's aviation industry.