The Military-industrial Scientific Research System of the Academic Master Chapter 499

Chapter 499 Accidentally performed the Cobra Maneuver (Fourth update, please vote for me!)

 The general helicopter improvement project in Bingcheng, after Chang Haonan paid some attention to it, let it go to Liu Hongbo.

The Z-9 platform is, after all, a medium-sized helicopter of 4-4.5 tons, and it is a relatively mature design from France. Even if it is modified, the risk will not be great.

 At most, it is nothing more than failing to meet the design requirements.

 It's not like it hasn't happened before.

 The first armed variant of the Zhi-9, which is the Zhi-9W in that document, finally passed the acceptance test after lowering the design specifications.

What's more, the 602 Research Institute has made it clear that this improved version will not make any drastic changes to the basic design of the Z-9, so there is nothing to worry about.

 Others in the Torch Group must learn to act independently.

 This is a good opportunity to practice.

After all, for Chang Haonan, the two most important things at the moment are the turbofan 10, which is already on the right track, and the heavy-duty die forging press, which is under intensive preparation and will soon start research and development work in the name of "pre-research" -

 But for the current Chinese aviation industry, no matter how modified the MiG-21, that is, the J-7, is not enough to arouse everyone's interest.

Professor Yan Yongnian of Qinghua University is currently sorting out the remaining design data of the previous semi-finished product and contacting some old comrades who have participated in that project and are now interested in rejoining the construction of die forging presses.

Sun Huizhong, the chief designer of JJ-9, is standing in the command station not far from the aircraft, deploying the preparations for this test flight.

Just when Chang Haonan was trying his best to advertise the TORC Multiphysics software and Torch Group's numerical calculation business.

Of course, this does not mean that Guihang and its sister units must keep the information secret.

  The test flight of the JJ-9 has been "secretly" carried out for almost half a month.

 The scale of Yunma Factory is more than a little smaller than its counterparts in Shengjing, Haojing or Rongcheng. In addition, it is located in a mountain, and the supporting airport is also relatively cramped.

 In fact, this aircraft failed to make too many waves in the industry. Even in the circles of military fans and aviation enthusiasts, only the most senior group of people paid attention to it.

 Simply put, the taste is spoiled.

 Actually, today is not the first flight of this model.

 The front and rear canopies of the aircraft were opened to the right, and two boarding ladders were erected on the left side of the fuselage, apparently waiting for the pilots to board the aircraft.

In short, the first flight half a month ago was quite low-key, not even as good as the prototype roll-out ceremony attended by provincial leaders.

There are not even wall-climbing parties joining in the fun.

 In fact, Chang Haonan has even decided to hold the first working meeting of the die forging press R&D team on the last day of October.

 Yunmachang, Qianzhou Province.

 Technically speaking, the JJ-9 can indeed be regarded as the ultimate improved version that has a direct lineage with the MiG-21.

The No. 01 prototype of the JJ-9 was painted in red and white and was parked quietly at the end of the takeoff runway. Several auxiliary vehicles providing power and air sources were parked next to it, connected to the aircraft by thick pipeline.

 Therefore, the maintenance work of the aircraft is usually carried out directly on the runway.

  Anyway, there may not have been a chance to take off a plane here in the past month...

Considering the relatively remote geographical location of Yunmachang, it takes a lot of effort to get here not to mention from the capital city, but even from the provincial capital.

Of course, the JJ-9 is one thing for the entire aviation industry system, but it is another thing for your aviation industry.

This can be said to be the most critical step for Guihang to save themselves and survive. If Shuo Wei didn't understand it, then maybe even Chang Haonan wouldn't be able to save them.

Therefore, Chief Engineer Sun Huizhong and Guihang General Manager Lin Haijun seized almost every possible opportunity to demonstrate the aircraft to potential users.

The reason why this aircraft is painted to look as gaudy as it is, is because today, Wu Guohui, the captain of the Bayi Aerobatic Team, will come in person to experience the flight performance of this prototype aircraft.

The model currently equipped by the Bayi Performance Team is the J-7EB, which is the performance model of the J-7E and one of the main models of the Chinese Air Force.

To be fair, the performance aircraft derived from the J-7E can basically meet the needs in terms of low-altitude and low-speed performance.

But the purpose of air shows is not just to show off wonderful stunts and the superb flying skills of pilots - from the perspective of flying stunts, then any jet aircraft is inferior to those propeller-powered special aerobatic aircraft.

 The more important point is to show the style and strength of the People's Air Force, including the Chinese Aviation Industry, through flight performances.

From this perspective, the J-7EB is a bit unsatisfactory.

Even for viewers who don't know much about air force equipment, it's not difficult to see that this is not a very advanced fighter aircraft.

 So, the Bayi Performance Team has been looking to replace itself with a model that at least looks more advanced. At present, the most advanced main battle model in the hands of the Air Force is the J-8C, which was finalized last year.

But even after Chang Haonan's extensive modifications, the J-8C, which is an interceptor aircraft, is really not suitable as a performance aircraft.

 The mobility is strong enough, but the agility and reaction accuracy are still a bit lacking.

 Besides, it's a bit too expensive…

At this time, the JJ-9 was approved as the inlet verification model of Project 10.

Lin Haijun keenly discovered this opportunity and put the draft design of the aircraft on the desk of the Air Force leaders.

 Generally speaking, the maneuverability of the J-9 is far superior to that of the original J-7EB, and the two-person cockpit also allows a flight photographer to accompany the aircraft for photography.

 The more important point is that it is at least a "pointed aircraft".

 For the less knowledgeable audience, it even looks similar to the F16 used by the American Thunderbirds performance team.

  After all, when an airplane makes movements in the sky, in most cases, only its outline can be seen.

Hence this experience flight.

Furthermore, Lin Haijun understands the essence of eating two things with one fish.

At this moment, on the management platform in the distance, there were several people with obviously foreign faces standing next to him, all holding a telescope in their hands.

　　Obviously, I also came here to watch this flight.

Not long after, Wu Guohui, who had already changed into flying gear, and another test pilot boarded the plane one after another.

　　With this J-9, there was another J-7 that took off.

The latter will assist the No. 01 prototype and show Wu Guohui a "unique skill" of the JJ-9.

Wu Guohui is not a full-time test pilot, but as the leader of the demonstration team, he has an astonishing flight time of more than 5,000 hours, so he adapted to the new aircraft quickly.

Ten minutes later, two planes took off into the sky at the end of the runway, one after the other.

 Just this simple action, pulling up the nose of the plane to climb, allowed Wu Guohui in the front seat to experience the extraordinary power of this aircraft.

 Not only the take-off distance is shorter, the throttle and pole position responses are also much more sensitive than the J-7EB he is used to driving.

The turbojet 14B does not have a full-authority digital electronic control function. This improvement is entirely due to Chang Haonan's redesigned compressor and the more efficient DSI air intake on the JJ-9, which allows the engine to adjust its working status at a faster speed. Won't get caught in a surge.

 It is somewhat similar to a person's lung capacity becoming larger and lung function becoming healthier. Although the muscle mass does not change, the level of exercise will still be improved.

After experiencing the increase and decrease of the throttle several times in a row, Wu Guohui roughly mastered the operating rules of this aircraft.

His own rich experience is of course one aspect, but more importantly, JJ9 is really easy to open.

Due to the existence of fly-by-wire flight control, the overall control of this aircraft tends to be linear, which is very intuitive.

Even a novice can master it quickly.

  It is indeed a good foundation as a trainer aircraft.

Wu Guohui, who had itchy hands, climbed the plane to a safe height and prepared to try a few aerobatics.

Before taking off, he already knew that there would be potential foreign customers watching today's flight.

 Hence, before making the move, Wu Guohui specifically adjusted the direction to allow the plane to pass sideways above and in front of the management platform.

At the moment the J-9 flew across the airport runway, he quickly pulled the stick back with his right hand and controlled the throttle with his left hand to prevent the aircraft from entering a rapid climb attitude.

 After the brief feeling of overweight, the two pilots' eyes crossed the midday sun and landed on the horizon behind them.

 They were almost "lying" on the back of the seat in a slightly head-down position.

From the outside, especially from the viewing platform on the side, the nose of the aircraft tilts up to about 100-110° almost in an instant, forming a situation where the tail is in front, the nose is behind, and the fuselage of the aircraft is almost erect. But it is still flying forward.

Even though he was shocked, Lin Haijun also did not forget to pay attention to the reactions of the wealthy investors next to him.

As expected, several people opened their mouths in unison, holding telescopes, and almost stood still.

 Cobra maneuver!

 (End of this chapter)

Chapter end