Z15 type helicopter model is available for review: New journey of "auspicious birds"

In the 15 years of the Chinese Civil Aviation Shenyang Airlines Aircraft Airlines Examination Center (hereinafter referred to as the "Shenyang Trial Center"), a model of the model is not long or short. The case and the heart occupy a very important place. It is the Z15 multi -purpose helicopter.

On July 22, 2022, the Z15 helicopter obtained a model qualification certificate issued by the Civil Aviation Administration, marking that this 7 -ton advanced medium -sized multi -purpose helicopter has the conditions to enter the domestic civil aviation market. 15 years of the spring and autumn rotation, witnessed the twists and turns of the journey, and the Chinese civil aviation appraiser who moved forward finally poured out this heavy model certificate with heart blood. It is not only the "pass" of the Z15 helicopter flying towards the market, but also the "military merit" of Chinese civil aviation approved by the approved person.

New exploration:

"The same platform, two models, each of which is obtained"

Open my country's civilian helicopter spectrum, you can see the AC311 helicopter with a take -off weight of 2 tons, the 4 -ton AC312 helicopter, and the 13 -ton AC313 helicopter. But between the 4 -ton and the 13 -ton level, there are eye -catching gaps.

In order to fill this gap, in 2004, China Aviation Industry Group and French Airbus Helicopter (hereinafter referred to as "Air Straight Company") started in accordance with the principles With the cooperation of jointly developing advanced medium -sized multi -purpose helicopters, the development of the Z15 helicopter (French model EC175) project was officially launched. This is also my country's first major aviation equipment to cooperate with equivalent to developed countries in the high -tech field.

In terms of airworthiness approval, the two parties adopted the "same platform, two models, and their respective evidence collection" model, and the Air Direct Company applied to the European Aviation Security Agency for the EC175 helicopter model certificate. Company ") Apply to the China Civil Aviation Administration for the Z15 helicopter model qualification certificate. This review model is an unprecedented exploration for Chinese civil aviation.

Z15 helicopter

Yang Xunmei, director of the Aviation Aviation Aviation Aviation Aviation Aviation Aviation Aviation Administration, told reporters that in 2007, Harbin Company submitted the application for a model qualification certificate to the Civil Aviation Administration. Under the organization of the Aviation Trial Division, the review team was initially established by the Shenyang Audit Center, the Northeast Regional Administration of Civil Aviation, and the Security Center of the Civil Aviation University of China. In 2013, all members were adjusted to the Shenyang Trial Center. In response to the problems encountered at all stages, the Civil Aviation Administration took the lead in coordinating the European Aviation Safety Administration and Air Straight Company to formulate targeted management plans, including signing the "China Civil Aviation Administration (CAAC) and the European Aviation Safety Administration with the European Aviation Safety Administration (EASA) The work arrangement of the EC175/Z15 project "is clearly replaced with the technical path of the WZ16 engine and the latest navigation rules for the application of the WZ16 engine to invest a large number of resources to ensure the smooth implementation of the project.

A tackling battle:

Don't be afraid to go all the way to go

However, the road to success is always full of twists and turmoils, and unpredictable difficulties and challenges have continuously tested the Chinese civil aviation approved person.

Just as the Z15 helicopter's navigation approval work is steadily promoted according to the plan, the Z15 helicopter has to be replaced with the WZ16 engine because the selected PT6C engine cannot be purchased.

Sun Jinbo, director of the structural strength room of Shenyang Audit Center, was a member of the review team. Previously, he was an engineer of Harfei Company. He participated in the cooperation negotiation stage of the Z15 helicopter project. Therefore, he has a deep understanding of the difficulty of the development of the Z15 helicopter and the process of aviation evidence collection.

"The engine is the core component of the helicopter. Replacement of the engine means that the review plan needs to make major adjustments. Many review work needs to be restarted. The WZ16 engine was in the stage of qualified approval at that time. A big influence. "Sun Jintbo told reporters.

Professional review and discussion

Yang Hua and Yin Chong are the "golden partner" of the Z15 helicopter review team. The former is a test pilot and the latter is a test flight engineer. Since 2012, they have participated in this difficult task. In May 2016, when they participated in the training in France, they drove the EC175 helicopter that had entered the market at the time.

"Advanced performance, complete function, superior avionics system, and very in line with market demand." The EC175 helicopter brought Yang Hua very deeply, which made him look forward to the Z15 helicopter.

The "Gold Partner" of the review team

Taking the EC175 helicopter as a reference, Yin Chong realized that the performance of the Z15 helicopter's whole machine will also reach the advanced level of similar helicopters internationally, which makes him feel that the burden on his body is a bit heavy.

In December 2016, good news came from Hafei: Z15 helicopters with two WZ16 engines were equipped with the first flight in Harbin.

Driven by the China Civil Aviation Airlines Examination Center, in October 2019, the WZ16 engine obtained the National Civil Aviation Administration Qualification Certificate.

Since 2019, the Z15 helicopter's navigation review has entered the sprint stage.

Under the strong leadership of the Civil Aviation Administration, the review team of the Shenyang Trial Center as the core work team and the applicant jointly attacked the difficulties side by hand, and conducted a comprehensive and in -depth assessment and verification of the 301 airworthiness clauses applicable to the Z15 project. 946 compliance documents, review passed 123 laboratory trials, completed 71.25 hours of review flight test, and 150 -hour function and reliability flight test. Complete the review test flight

Behind the review team, the efforts of the China Civil Aviation Airlines Examination Center system have fully supported and promoted the development of project development and airworthiness review. During the review process, the SAIC Audit Center actively practiced the concept of the "five integration" of the Civil Aviation Administration, strictly adheres to the safety bottom line, strengthened safety management, and overcome a series of technical difficulties such as the main reduction of dry operation, flat fly vibration, and rainstorm test; at the same time Innovative review methods have established a centralized review mechanism. Through the working mechanism of daily documentary, weekly evaluation, and monthly assessment, the project assessment and management have been strengthened, which provides a strong guarantee for the smooth completion of the project. In addition, the Shenyang Audit Center also established the Z15 helicopter model qualification certificate review of the party members to tackle the team to give full play to the role of the party organization's combat fortress and the role of the pioneer of party members, overcome difficulties such as time, heavy tasks, and technical difficulties. Work.

Z15 helicopter work conference

From the severe cold northeast, the Sanjiang River, to the cool and hot Hebei Luancheng, and then to the six -plate water on the Yunnan -Guizhou Plateau ... In different environments such as high -cold, high temperature, secondary plateau, plain, etc., the review team completed performance and flight characteristics, avionics systems, etc. 458 test flight projects. The extraordinary workload and the changing environment test the team.

Innovative review methods to promote project progress throughout

Regardless of whether the outdoor temperature is 35 degrees Celsius or minus 30 degrees Celsius, in order to ensure the performance of the helicopter, members of the Type Z15 helicopter can not enjoy the comfort brought by the air conditioner. In such an extreme environment, Yang Hua and Yin Chong often need to fly for 6 hours a day.

"One day, sometimes the backache can't be straight." Yang Hua told reporters.

Yin Chong's throat who needs to keep communicating with the test flight mission is dumb. "After one day, you have to eat the throat with a film to relieve it."

Entering March this year, the evidence collection of the Z15 helicopter has reached the "last mile". However, Shenyang suddenly broke out the epidemic, and the test flight may miss the valuable window period.

After being aware of the urgency of time, the review team and Harfei Company held a meeting overnight, and at the same time tried the aircraft group to take the initiative to ask for. In the end, the two sides reached a consensus and drafted the vehicle sent by Harfei to the Shenyang for the aircraft group from Harbin. After multiple communication and coordination with Heilongjiang's epidemic prevention and control headquarters, Jian Sanjiang epidemic prevention and control headquarters, and Jian Sanjiang Airport, on March 28, the epidemic prevention and control scheme in a special state was finally determined. After entering the Shenyang urban area at about 5:00 the next day, Hafei's vehicle was connected to the test aircraft group, and rushed to Jian Sanjiang Airport to complete the test flight work at the last stage.

Achieve the flag for the Z15 helicopter "Party Members"

During the interview, Wang Xibao, deputy secretary of the party committee of Hafei Company, said with emotion: "The members of the review team set up at the last moment before Shenyang 'Fengcheng'. It is very good at the critical moment, and the spirit of the critical moment has made us very moved. "

A milestone:

Reorganized and unscrupulous

The successful collection of Z15 helicopters is not only a new height of my country's civilian helicopter industry, but also a milestone for the approval of Air Airlines in my country.

Lu Xinming, director of the China Civil Aviation Airlines Examination Center, told reporters that the Type Z15 helicopter model review is strictly carried out in accordance with the latest navigation regulations of the Chinese civil aviation rotor aircraft, and the approval foundation is consistent with the latest aviation technical standards in Europe and the United States. The helicopter enters the current maximum safety level transport helicopter sequence. The successful development and evidence collection of this type of machine has created a quality civil aircraft for the country, and a high -level technical team that can fight hard battles. The aviation industry international cooperation project has made new successful explorations.

Z15 machine review has achieved a complete success

Zhang Lei, the leader of the Z15 helicopter model review team and deputy director of the Shenyang review center, said: "For the industrial department, the Z15 helicopter meets the current latest CCAR-29 airworthiness regulations, in terms of design technology, verification technology, and verification procedures Both have made breakthroughs and improved. The Z15 helicopter availability proves that the civil aircraft design and airworthiness verification of the industrial sector in our country has reached a considerable level; for the airworthiness department, through the successful completion of the entire process of advanced civil aircraft, The testing team will be more mature, the understanding and grasp of the airworthiness terms will be more in -depth, the application of the approval method and the guidance of the applicant will help more progress at the beginning of the model review. "

Z15 machine review team

The Z15 helicopter has obtained a model certificate to laid a solid foundation for the success of the project. To achieve real business success, it also needs a hundred -foot -headed pole to go further. At the ceremony, Liu Wenjie, general manager of Hafei Company, mentioned that Hafei will fully excavate the potential of model platforms in accordance with relevant units in accordance with the market demand, and accelerate the series of series of structures such as search rescue and emergency medical rescue to achieve the Z15 helicopter of the Z15 helicopter. Large -scale application. For the Shenyang Audit Center, the review of the review after the Z15 helicopter certificate will continue. As the Z15 helicopter was put into market operation, the corresponding sustainable airworthiness management work also put forward new challenges to the Shenyang Certification Center. Looking back at the 15th year, the Z15 helicopter model review work has both flat avenue and difficult bumps, and has a profound lesson and profound lessons. At the certification ceremony, Yin Shijun, the chief engineer of the Civil Aviation Administration, proposed to the Chinese Civil Aviation Aviation reviewer that we must carefully summarize the past work, analyze and summarize from various aspects such as technical capabilities, project management, international cooperation, and support guarantee. , Cleany results, do a good job of inheritance, accumulate valuable experience for other projects, promote the development of the aviation industry and take off the approval of airlines to a new level.

Z15 model model qualification certificate certificate (picture of this article is provided by the Shenyang Trial Center)

Founding the bumps into avenue, along the road leading to the world, China Civil Aviation Aviation Trial will definitely be unscrupulous and fight for it. (China Civil Aviation reporter Liu Shaobin)

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