Military of China, force comment.
Military of China, force comment.

“Eagle” research test site hospital the first time to test two” Eagle “testing machine ” Eagle “Finally a stall spin flight test pilot after vehicles were triumphant return

12 8,” Eagle “passed the review of the design shape, and was officially installed units. Aircraft development history of contemporary Chinese people fail in their mission aviation, pioneers, never give up, open up a new machine developed with Chinese characteristics, a true portrayal of the road.

sixth in 2006 Zhuhai Air Show, the “Eagle” advanced trainer for the first time publicly display, which amazed the world by a great concern. Since then, the “Eagle” twice in Indonesia, Bangladesh and other countries had a wonderful flight performance, large number of reports by foreign media, has been called “a flying eagle from China.”

“four of” mode of generation

“Eagle,” the development of more specific, it is by Research the parties entered into an investment agreement participation, the implementation of “joint investment, joint research, sharing risks, sharing interests” of the “four were” developing a new model. Officially approved in the military before 2007, “Eagle” is only in the former China Aviation internal project. Parties as a joint venture development of new models, “Eagle,” described as “congenital conditions inadequate” way out, funding issues, technical issues, resource issues, personnel issues are relatively difficult. Guizhou Aviation Industry for many units, the shape or even a matter of business survival and development, and thus be business as “survival project.”

flight test center in the aviation industry as the “Eagle” main reference research units, as early as June 2002 began to intervene, “Eagle,” the development, in advance of full investigation proposed on the basis of the overall test plan, and arrange for staff to proceed with the test group and the relevant technical preparations. To effectively promote the model shape test, flight test center has established a special “Eagle” model office, and to identify experienced by the test flight Fan power as chief engineer. To enhance flight technology research, the center than in the elite institutes in the flight test engineers to deploy a project team. In order to ensure continuity of flight test, flight test center is relatively fixed Zhang Jingting, Zou Jianguo, Zhang Song, Zhang Yi, the Yujin Wang, Masao Sun, Li Ji W, Ding Sanxi other eight excellent shape to carry out flight test pilot.

for the “Eagle” and “four of” development model, because it is all self-financing, a variety of resources “not to have to rely not on” only by the research and development units by themselves, to find a way. But “Eagle” to carry out this first time to explore the development mode for China’s future development of the new machine has an important reference. With the aviation industry continue to introduce more market concept and factors, the future of independent project like this, take the cooperation in the development of new aircraft model may be more and more.

“our aircraft” common child

2004 年 4 25, the first two “Eagle “transition from the flight test center in Guizhou. This is a historic transition, flight test center at the airport held a simple but solemn ceremony. Starting from the plane to the center, test center the unit immediately, “Eagle,” the Canadian system debugging and modification work, the testing machine may fly less than two weeks to reach the state. At 11:00 on May 11 2004, Zhang Jingting driving “Eagle” aircraft flight test center of the airport light leapt from the sky. From that moment on, “Eagle” flight test campaign officially started.

in the new development model, the test center’s role has also undergone a change. However, due to “Eagle” was not a country issued a formal model, not included in the technical transformation project, test the software and hardware facilities have to rely on themselves. The initial test flight, not even dedicated to “Eagle” power cars, fuel trucks and plant, the total division of the tested systems and units to find ways to “rub” some other types of resources, effective mitigation of the test pressure. Manufacturers who make the development of these very moving, with their flying personnel joked: “‘Eagle’ is like our child, as in the flight test center, our children have never been ‘discrimination’ over.”

-depth work with the flight test, flight test center continue to integrate resources, sort out the work of thinking and concentrate on research, and conduct extensive international cooperation, so that the “Eagle” in the shape has been maintained in flight high test efficiency, and has created one day to fly six flights a week, a record 39 vehicles, which the history of flight test center is also very rare.

from the first two “Eagle” flight test center testing machine transitions to the end of December 2005 to complete the technical evaluation within the industrial sector, after 1 year and 9 months efforts, flight test center has made significant victory. Through the flight, “Eagle” continues to mature, also has a broad development prospects.

your flight in the clarity of the law

Air Force in 2007, formally the “Eagle” model project, “Eagle “ushered in a major turning point of accelerated development. However, the angle of flight test center, it is definitely not just a new course to increase the risk of several complex issues, but to update the flight concept, increase investment in technology and people, resort to a test battle.

“Eagle” in the formal project, the biggest improvement is to install stability augmentation system for aircraft, has been for a relatively “mature” models, the This is a very complex thing. Research side of the participants after full discussion, the proposed edge of development, while to adjust, while improving the working principle. System test began, there have been several air out of the aircraft rudder servo problems automatically. Once that’s found in the air, aircraft aileron deflection will produce, test pilot must be correct lever. However, this phenomenon is not every flight when they appear. We conducted a number of consecutive ground tests, a variety of ways to simulate the causes.

that time, total flight force teachers Fan and his colleagues sleep well every night, Fan Li in bed still thinking about a variety of ways, “how can let the problem in ground tests to expose? “he made on the basis of trial and error:” solution-maker who, since the occurrence of this problem is the air, then the focus of research is how to simulate the real state of the air. “In subsequent trials, we looked at the ground the aircraft two, he and crew kept together with a wooden hammer percussion aircraft, simulating an aircraft in the air vibration. Hard work pays off, in a ground static test, the aircraft finally appeared only in the air before the previous problems, all of the confusion in this moment turned into the joy of victory! Problem is found, the manufacturers of aircraft-related systems rapidly improved and improved, not only solves the problem, but also to “Eagle” Youxiang security and an important step towards maturity.

Fan Li and his team in the “Eagle” in flight, everywhere reflects scientific, such as aircraft overload test, must be effectively controlled within a certain range between the large the smaller will not work. If the total system to lower the standard division, involved in the tests may be better than a lot of the day. However, model development, this is a serious potential harm. Because those who do not identify and solve problems and risks will inevitably bring users to make many “time bomb.” Test is to be able to identify problems, and the ability to solve the problem, this is the real model is responsible for, to the state. This is the test of the law.

modified line of craftsmen

“Eagle” came to the flight test center setting

fly first important job is to increase conversion, alteration of internal and external personnel to install the large number of aircraft, use of different test equipment, cables and sensors. As the aircraft itself is very precise, a little change to be extremely cautious, coupled with “Eagle” aircraft fuselage is relatively small, the body of the cable channel is very tight, making the conversion work is extremely complex.

flight test center maintenance department modified the concentration of superior forces, give full play to the initiative, like many a good way. In the aircraft, modified staff will shift some of the equipment, “crowding out” some space. External fixed cables in aircraft, in case of difficult skin flap closure, they cover the mouth with the open-hole method, the cable through the drilled hole. Staff also take advantage of modified aircraft engine compartment insulation wrapping and other relatively “less important” parts, to focus on alignment, and later it-yourself insulated. For some particularly important, and relatively large size of the test equipment, aircraft modification officers help manufacturers in the aircraft factory to complete the work related to conversion.

in the “Eagle,” the body, there are many small curved space, modified, who can only touch the parts of the general location of his hand, and eyes can not see, modified staff on a “blind insertion” rule of thumb, feel and familiarity of the aircraft to complete the work. Strength during the test flight aircraft, modified staff every day of the fuselage deformation measurements, up to more than 30 measurement points, the intensity of work is very large. Conversion work is not only complicated, but there are certain risks, such as the installation of the ejection rocket, the rocket flutter test excitation when a small, once the work of errors, it will cause serious personnel injury and aircraft.

key test for a variety of subjects, but also adapted for specialized personnel plus conversion work. In the “Eagle” to stop the air flight risk subjects, who converted the back seat in the aircraft cabin installed the battery itself, because the standard battery can not meet mission requirements, they are specifically increased in the two battery cells for expansion, and improve the structure of the battery, so that aircraft do “somersault” action can be highly difficult to work effectively as a reliable emergency power supply planes. Brothers who fly with the unit said: “The modified test center staff are all craftsmen.” They use their skillful hands, the “Eagle” wings weave a success.

“blue lab” the founder of

as an advanced trainer aircraft, “Eagle” is the official Air Force project, the proposed addition of a major subject in the training phase is complete spin stall angle of attack flight. Overcome the “Eagle” I kind of risk stall spin flight test campaign, first launched in test technology. Flight test center through free flight tests validated the model wind tunnel test results, but the wind tunnel test results and theoretical calculations are not representative of the true state of the flight test, flight test must be carried out in the air, flight test engineers to become “Blue Sky Lab” the founder.

2009 in June, flight test engineers from the group started to prepare the related technology. Stall spin test because the risk of large, international group of commonly used “anti-spin rockets” and “anti-spin parachute” two “insurance approach” are conducted in-depth study, the final decision to use anti-spin umbrella approach. Development of anti-spin parachute is a very complex project, the research group in the past six months time, carried out a series of ground tests, temperature tests, pressure tests and related testing, and for the “Eagle” tailored Fixed a dedicated anti-triangle spin the umbrella stand. In addition, the group also learned in recent years, FT-7 aircraft successfully developed such as anti-spin parachute experience. After several trials, a pilot parachute is not an effective solution to problems such as sheets full, accurate parachute rope length obtained a reasonable value.

anti-spin parachute test is divided into two phases of ground and air. The success of ground tests, greatly inspired the confidence of participating personnel. Subsequently, the test pilot Li Ji-wide driving of the “Eagle” to begin air tests. However, after a test flight in the rocket hit an umbrella, umbrella, but did not open, the first air test failed. Flight test team did not give up, stop and find out why. Finally, the identification is the umbrella of the binding problem. Thus, the research group and the staff and associated with the manufacturers, re-banding work, completely solved the problem. Then the two air tests were successful. Thus, the “Eagle” anti-spin parachute developed significant victory.

there is this important breakthrough, “Eagle,” the high angle of attack stall spin test was on March 2, 2011 by the test pilot Li Ji W, Sun Hung successful to complete. The successful test flight of great significance, not only for the “Eagle” fixed flight cleared the last stumbling block, more in the future other new aircraft, high angle of attack stall spin accumulated flight experience.

“Eagle” wings across the mountain to ourselves

“Eagle” by the stereotypes in order to test, must complete the Class I risk subjects – air starter, flight flutter characteristics, live-fire range test and other “mountain to ourselves.” If you can not win them safe and smooth flight test subjects, “Eagle” can not fly.

as “Eagle” with only one engine, if the air start unsuccessful, the aircraft will lose power, high-risk. Bear the main task of the flight test pilot Zhang Song had carefully prepared beforehand, and even supposedly the air start unsuccessful, and simulated space dedicated to the slide landing exercises. January 30, 2005, Zhang Song driving “Eagle” into the designated airspace, flight test campaign officially started. At 7,000 meters altitude, Zhang Song off of aircraft engines. “Ready to start”, the commander issued a directive, Zhang Song pressed the ignition button to start. “Bang”, the end of the aircraft engine nozzle emits bright flame, the air a successful start. To ensure the reliability of the engine, fully tested embarked match, the aircraft height of four meters in 7000,8000,9000,10000 at different speeds were carried out 4 times stop and then start the air flight, starting test all air all at once successful.

flutter characteristics of flight for the “Eagle” shape is critical, as category I risk subjects, all in all the border points test. World, many new machines are in the flight test aircraft disintegrated in the air accident occurred, causing the plane crash. Flutter flight from the end of 2004, to May 25, 2005 which lasted more than six months. Test, the test pilot who during the test flight at maximum speed, the height of 5,000 meters was tested, the maximum table speed reached 1150 km/.

test pilot Yujin Wang had been in force when the “bomb champion”, he also brought the strength of this clever test flight. Airlines flying bomb targets risky to try to complete the process of bomb attacks on only two or three seconds, the aircraft are not allowed to vote if often premature bomb, but too late to pull shrapnel had hit the ground or aircraft, the risk of accidental injury. And, in case of unforeseen circumstances to vote no less than a bomb, there is the risk of landing with the bombs. He was under the “Eagle” test the performance and characteristics of the target, their study concluded a very practical approach. Up, he once bomb 4, and collections center bull’s-eye. Try doing air to air missile target flight, Yujin Wang and researchers together on technology research, targeted emergency response plans put forward. Test result is twice the target blown air umbrella flower, very pretty complete.

“Chinese aircraft is OK!”

2009 In early September the Third Brigade received a maintenance test flight center to inform their superiors, Bangladesh pilots will soon be in the “Eagle” aircraft on the flight experience. Task is to command, the battalion down into immediate action, in just four days to complete a lot of tedious work to make the aircraft to fly in a good state.

9 16, has experienced continuous days of rain, the sun finally showing clouds. Day, flight test center issued a “Eagle” four sorties were flown missions, foreign experience started flying, flight test center three pilots will fly with a pilot in Bangladesh. To make the “Eagle” pretty appearance, on the day of the flight crew to do a detailed security arrangements. 11 am, the pilot began to approach the foreign flight crew with full spirit, neat queue welcome guests from afar. Foreign pilots to take off line to watch the skilled maintenance crew maintenance procedures, thumbs frequently commended. When the complete experience of the foreign pilots flying with the “blunt” the Chinese words on the leadership of CATIC, said: “China’s aircraft is 0K!” Experience flight until 15:00 o’clock, the whole process organized to protect the good, without any problems. Crew to their high quality and efficient work, won the honor for the country.

each test flight, test pilot and crew are fighting side by side two important teams. Each test subject’s breakthrough success of each flight test campaign, are inseparable from the work of meticulous crew. In the “Eagle” up to 7 years of flight, the crew had to overcome various difficulties, so that the “Eagle” has been in the shape test to maintain a good flight.

“Eagle” complete stereotypical flight, is one of contemporary China’s aviation flight technology, ability, determination of a concentrated review, the new aircraft is also an exploration and development of the model test. “Eagle” wings onto the blue sky of the motherland, is a huge success, but also a new starting point, in the “Eagle” in the discovery and development of test problems, and experience, will become a valuable resources effectively to promote the future development of China’s aviation industry.

(edit: SN031) share: