After all, the verification of the fly-by-wire control system can not be done in one or two days, it is necessary to explore a little bit through theoretical calculations combined with the real flight data of the aircraft, so if you want to speed up the development progress, in addition to the calculation and design of the project team around the clock, the most important thing is that the actual model of the aircraft will be tested for multiple flights regardless of the cost, and its own performance will be shown as much as possible, so as to use these data to form a real flight envelope and enter it into the fly-by-wire control system.

Naturally, the country is well aware of the importance of the telex system, but there are too few advanced aircraft in its hands, so it can only allocate two J-7s to Guo Xiaobo's team for experimental research.

However, due to various reasons, the maintenance of the two J-7s is very complicated, the attendance rate is not high, and they cannot undertake high-intensity test flight work, resulting in Guo Xiaobo's theory cannot be verified even if it is made.

So after thinking about it, he found Zhuang Jianye, hoping that Tengfei Group could provide a Y-6A business jet with its good attendance rate for the verification flight of the daily flight envelope, and two J-7s with difficult maintenance are specially used for high-maneuverability flights.

In this way, even if the J-7 is lying on its stomach, it is unlikely that the fly-by-wire control system project team led by Guo Xiaobo will be shut down due to the lack of experimental verification aircraft.

There is no way, the field of aeronautical research is a comprehensive discipline that attaches equal importance to theory and practice, and although fly-by-wire control is a sub-project in the major category of aeronautical research, it cannot be separated from this iron law.

Because of this, the aviation platform for experimental verification is not important, but very important.

Even in a sense, the number and level of experimental verification aviation platforms can reflect the strength and weakness of a country's aviation technology.

This can be seen from the various test and verification planes of the United States and the Soviet Union, and without the foreshadowing of the test and verification planes that are crazy and useless, it is impossible for the United States and the Soviet Union to possess the F-15, F-16, Su-27, MiG-29, and other aviation industry crystallizations that subvert imagination.

From this point of view, there is indeed a big gap between China and foreign aviation industry powers, not to mention the creation of a dedicated verification machine, that is, there are very few platforms suitable for modification.

Zhuang Jianye was naturally clear about the current situation in China, so Guo Xiaobo came to him, and Zhuang Jianye did not hesitate at all, and agreed to provide the top version of the Y-6A for the flight control research institute free of charge.

In addition to the free flight platform, Zhuang Jianye also provided 30 million yuan of technology research and development funds for the flight control research institute, in addition, once the fly-by-wire control system based on the Y-6A is successfully commercialized, the flight control research institute can also extract 10% of the agreement share from the future sales revenue.

What the Flight Control Research Institute needs to pay is to study the fly-by-wire control system of Project No. 10 and help to understand the fly-by-wire control system of the Y-6A used for experimental verification.

Whether it is Guo Xiaobo or the Flight Control Research Institute, there is no resistance to Zhuang Jianye's requirements, and the Tengfei Group is giving money and providing an aircraft platform for free.

What's more, for them, the fly-by-wire control system of small aircraft is not difficult, you must know that Guo Xiaobo's team is doing the fly-by-wire control system of the third-generation fighter, and the small passenger/cargo aircraft platform cannot be compared with the fighter in terms of maneuverability or performance, plus as a verification platform itself, it is necessary to install a set of fly-by-wire control system for testing and verification, as long as it is slightly changed, it can be applied to the Y-6A.

Of course, the Flight Control Research Institute has no problem installing a fly-by-wire control system for the Y-6A, but the Y-6A is in some respects short of some of the indicators required by the Flight Control Research Institute.

Then there is nothing to say, there is a gap to change, just Tengfei Group in the hands of some key technologies of the advanced light transport platform also need to be tested and verified, so simply come to a two-in-one, so the change to the Y-6A began.

The first was the wing, which at first removed the support rods fixed to the fuselage, then added a sweep angle and winglets, and then simply re-optimized the fuselage, adding a small central wing box to the lower belly of the fuselage, and changing the upper wing to the lower wing.

The second is the tail, as the advanced light transport platform is prepared to adopt a T-shaped vertical tail in order to reduce the weight of the structure and increase the loading and unloading flexibility of the rear hatch of the tail.

However, Tengfei Group has not made a T-shaped vertical tail in the previous models, and now it has Yun-6A for verification, so it is simply added.

After such a change, the whole aircraft has long been unable to see the slightest trace of the Y-6A, it can be said that it is a brand new aircraft, and it is obviously inappropriate to use the Y-6A as the code name, but for a while I can't think of other names, so I will replace it with the Plateau Eagle pro.

Of course, this process was not all smooth sailing, and there were many twists and turns, after all, too many new technologies were used, the stability of the aircraft was not high in the early stage, coupled with the initial test of the fly-by-wire control system, so it suffered a lot of failures at the beginning.

In the most serious case, not long after the plane took off, the fuselage began to shake uncontrollably, but fortunately, the test pilot was in danger and drove the plane to a farmland not far from the airport, which did not cause much accident.

As for the small faults, there are countless of them, otherwise it would be needless to say that such a verification model took Tengfei Group almost two years to roughly complete the optimization of the entire model.

By the time it was designated as a cooperative model by the Royal Thai Aerospace Industries, the obtained parameters have been roughly determined:

The fuselage is 14.4 meters long, the wingspan is 16.2 meters, the height is 4.2 meters, the maximum take-off weight is 4.9 tons, and the maximum load is 2.3 tons.

It adopts a 1200 shaft horsepower Tengfei power D-40ML turboprop engine, or the same power Pratt & Whitney PT6 turboprop engine, giving it a maximum flight altitude of 9452 meters and a maximum flight speed of 443 km/h.

The maximum range is 3200 km with no load, and 2480 km with full fuel.

The interior of the cabin adopts a modular design, which can be arranged according to the needs of different tasks, 14 passenger seats, 9 business cars, 8 seats with lavatory, and 6 seats with lavatory.

and other different types of mixed passenger and cargo transport and pure cargo transport types.

Not to mention the flight qualities, the use of Honeywell's avionics system and the fly-by-wire system specially built by the Flight Control Research Institute makes the whole aircraft very maneuverable, in the words of His Royal Highness the Thai Royal Family after the first flight: "Very light, very soft, quick feedback, in some respects, not inferior to some fighters." ”

And now, in the sky has just completed the horizontal scrolling is the top version of the TM-9 Siamese Eagle ordered by His Royal Highness the Crown Prince of Thailand, seeing that the expected flight display of the action is all done, Xue Qiang and Qin Yibin The two pilots will drive His Royal Highness the Crown Prince of Thailand back to land, Zhuang Jianye exhaled, turned his head to look at Alondo beside him, and nodded slightly.

Alondo smiled tacitly, then turned around and got off the stands, and waited for His Royal Highness the Crown Prince of Thailand to land on the runway and slowly stopped on the side of the tarmac, Alondo immediately stood in front of the side of the plane, facing many media reporters who surrounded him, and cleared his throat: "I am here to announce an important matter, just an hour ago, Royal Thai Airlines reached an agreement with us to spend $150 million to purchase twenty TM- Type 9 aircraft, that is, in the near future, ordinary people in Southeast Asia can also enjoy the top-notch service on high-end private business jets. ”