Because the front wheel of the ship-based strong five should be changed from the original single wheel to two wheels, the structure of the entire nose wheel landing gear was almost redesigned.

Fortunately, during this time, China has introduced a lot of military aircraft from the United States, especially big guys like C130H and C5, and has a new understanding of foreign advanced landing gear structures.

Like this two-wheeled landing gear that is now processed for the carrier-based Qiang-5, it was specially tailored for the Qiang-5 by Academician Lu.

The structural materials are all made of new high-strength titanium alloys.

After processing the last process of one of the wheel parts in the landing gear in his hand, Academician Lu reached behind him with his right hand and slammed his back waist several times in a row.

"Chief Master Lu, take a break, Director Yang is here. Duan Yuemin, director of the Changnan Aircraft Factory, greeted Academician Lu cordially in a timely manner.

After hearing this, Academician Lu hurriedly turned around, and saw such a group of people coming behind him at some point, especially when he saw the young face standing in the front, he put down the parts in his hand, and hurriedly walked down from the operating table, and didn't care about the oil in his hand, he excitedly shook Yang Weiping's hands with both hands, and said in a loud voice:

"Director Yang, the front wheel landing gear brake is the most difficult and the last little problem has been solved, the carrier-based type is strong five, and it can be tested on the aircraft carrier!"

I heard Comrade Wang Haiyang from the Changxing base talk about it, so I made a special trip to the Changnan factory. Yang Weiping enthusiastically shook Academician Lu's hands and shook them up and down vigorously, "Chief Master Lu, hard work!"

"No hard work, no hard work, Director Yang, as long as I think that my strong five can take off and ascend to the sky on an aircraft carrier, I am full of energy!" Academician Lu shook his head again and again, and said with a happy smile: "The ship-based strong five can go from a pre-research project that was almost stopped to being finalized today, thanks to your Director Yang's unsparing care and support!"

"Chief Master Lu. After the WP6 engine of the strong five has been improved, what is the maximum thrust now?" Yang Weiping went straight to the point and asked what he was most concerned about.

The modification plan of the ship-based strong five is planned. Yang Weiping has always been very concerned, and at the same time, he also put forward a lot of practical suggestions to the modification project team headed by Academician Lu.

But in terms of engines, Yang Weiping's idea was to change the turbojet to a turbofan.

Because, he knew about the TFE1042 twin-rotor turbofan engine engine being developed by the American Garrett Turbo Engine Company. It only takes a little improvement to replace the ship-based J-5 with a strong heart.

In March 1978, Garrett Turbo Engine Company of the United States and Volvo Aero Engine Company of Sweden signed a cooperation agreement: on the basis of the core engine of TFE731 engine, jointly develop a high-performance military turbofan engine.

Garrett is responsible for the development of the core engine of the engine. Volvo was responsible for the development of the fan and afterburner. Volvoll had previously designed afterburners for the JT8D/RM8. The agreement calls for the first TFE1042 engine to run after 16 months.

After learning that Project 202 and Qiang Wu were engaged in carrier-based modifications, Yang Weiping set his sights on the core engine of the TFE731 engine.

THE MAXIMUM DIAMETER OF THE WP6 COMBUSTION CHAMBER CURRENTLY USED BY THE QIANGWU IS 660MM, THE TOTAL WEIGHT IS 715 KG, AND THE TOTAL LENGTH IS 5420 MM, WHILE THE MAXIMUM DIAMETER OF THE TFE731 IS 790 MM AND THE TOTAL WEIGHT IS 616 KG. THE TOTAL LENGTH IS ONLY 3561MM.

In terms of appearance and structure, it only needs to be slightly improved on the basis of the TFE731 core engine to be installed in the power compartment of the strong five.

The United States has now even opened up the F100 large turbofan engine to Huaxia, and the introduction of the TFE731 turbofan is of course not a task obstacle.

As early as half a year ago. The two prototypes of the TFE731 were dismantled and reverse-drawn at the engine research center of Huaxia First Aviation Industry Group.

Now, a prototype of a new small turbofan engine modified with the TFE731 core engine is being validated on the test platform of the Engine Research Center.

Academician Lu proposed to use the existing high-strength titanium alloy, high-temperature titanium alloy and nickel-based single crystal alloy to improve WP6, and Yang Weiping must have fully supported this, and also provided a lot of improvement suggestions.

Walking on two legs is definitely more stable than one!

"The maximum thrust is 3977daN, the intermediate thrust is 3242daN, the thrust-to-weight ratio is 5.47, the afterburner fuel consumption rate is 1.32, the intermediate fuel consumption rate is 0.95, the air flow is 46.2, the total boost ratio is 7.64, and the inlet temperature is 1020 degrees Celsius!"

"It's 790daN bigger than the original WP6! We adopted the theory of sand dune vortex proposed by Director Yang at the beginning, and changed the combustion chamber to a dune standing vortex; The blades are made of DZ78H single crystal alloy plus hollow air cooling.

Adjustable time port guide vanes are installed. Titanium alloy casing and compressor blades increase the rotational speed and improve the compression ratio. In addition, the traditional mechanical control in the Soviet Union was changed to electronic control, which was much more sensitive than before.

It only takes 9 seconds to go from zero to afterburner! Especially this improvement uses a large number of high-strength high-temperature titanium alloys, high-temperature nickel-based single crystal alloys, high-temperature aluminum alloys and resin-based materials, the thrust is increased by 790daN, and the total weight of the engine is reduced by 28 kilograms!"

Hearing Academician Lu's words, Yang Weiping immediately understood that this new WP6 was more advanced than the WP6 A that came later.

Think about it, so many new materials have been used, and the precision machining capacity has also been greatly improved, which would be really strange if the WP6 A in history was still poor.

Academician Lu, who was excited, introduced the parameters and specific improvement parts of the improved WP6, and pulled Yang Weiping to a large assembly workshop next to him.

A fighter that looked like a strong five, but was noticeably different on closer inspection, was parked in the middle of the workshop, and a dozen staff members in blue overalls were busy nervously and orderly under the folded wings.

Compared with the original Qiangwu, after this Qiangwu was folded from the wing knife, the wingspan was not even six meters.

Flaps and side strips have been added to the front of the fuselage, the tail has been slightly enlarged, and the area of the ailerons has also been increased moderately. The front wheels were turned into twin wheels, and a hook made of high-strength titanium alloy was added to the rear end.

Academician Lu personally replaced one of the original parts of the nose wheel landing gear with the new parts he had just machined, and then excitedly let a test pilot in his thirties board the plane and set off.

As the test pilot named Xu Hongwen started the plane, slowly drove out of the assembly workshop, began to accelerate on the runway on the apron outside, and repeatedly debugged the nose wheel landing gear for about half an hour, and after confirming that there were no problems, Xu Hongwen piloted the ship's strong five prototype and drove to a steel deck test flight platform not far ahead that was made in a one-to-one ratio with the aircraft carrier deck.

This flight test platform is fully equipped with a blocking hydraulic system, and even a one-to-one ship island has been built out of wood.

Watching the test pilot slowly rush the carrier-based Qiang-5 prototype to the take-off point 95 meters away from the deck glide angle, Yang Weiping felt an inexplicable nervousness for no reason.

His hands were unconsciously clenched into fists, and his five fingers stretched and clenched from time to time.

The various prompts broadcast from the command tower of the simulated ship island, the tail end of the ship-based Qiang-5 at the take-off point spewed flames.

Soon, the test pilot released the brake system, and the carrier-based Qiang-5, like a sharp arrow off the string, rushed out of 30 meters and accelerated sharply.

50 meters, 70 meters, 90 meters, follow the take-off, take off, continue to climb diagonally, straight into the clouds.

No one cheered from anyone on the test flight deck platform Zhouzhou, apparently it was not the first time that they had successfully taken off on such a test flight.

Yang Weiping felt his heart suddenly contract even tighter. Because he knows very well that it is a difficult hurdle for carrier-based aircraft to take off, and landing is a dangerous hurdle full of danger comparable to a ghost gate!

At this moment, Yang Weiping felt like a year, and he didn't know how long it had been, and the carrier-based Qiang-5 in the sky in front of him flew back, rushing down to the landing runway on the left side of the flight deck installed on the runway.

The staff responsible for operating the hydraulic transmission system of the cable are responsible for performing their duties in an orderly manner.

The plane landed safely at the demarcated landing point on the deck, and the front and rear wheel braking systems suddenly let out a "squeak" brake scream.

The first blocking rope was hung up and then released.

Then the second one hung up again, and then let go.

After taxiing at a rapid speed of about 185 meters, this carrier-based Qiang-5 came to a steady stop on the edge of the simulated ship island!

"It's a success! It's really a successful landing!" Yang Weiping clenched his hands into fists and kept muttering to himself.

"It's a success! There are still 45 meters from the aft deck, which is the best safe place to land!"

"It's done! Xu Hongwen, this guy flies too beautifully! Landing at 165 meters, 10 meters less than the 175 meters ordered by Chief Master Lu!"

The ......scene erupted in warm applause and cheers.

"165 meters! Great!" Yang Weiping clapped his palms vigorously and praised repeatedly: "It's amazing, this pilot's landing skills are really excellent!"

The applause and cheers at the scene did not make test pilot Xu Hongwen feel fluttering, he did not take off the shelf, but asked the ground crew to check the status of the plane and fly again.

Half an hour later, Xu Hongwen successfully took off again on the deck platform of the simulated aircraft carrier and landed safely, this time with a landing distance more than six meters longer than the previous one.

To this end, Xu Hongwen applied for a third test flight.

For the third time, the safe landing distance was only 160 meters! The best result that test pilot Xu Hongwen had hoped for was achieved.

Yang Weiping sincerely admired and gratified this achievement, and said on the spot that he would like to give credit to test pilot Xu Hongwen and all the personnel of the Qiangwu carrier-based aircraft modification project team. )