Snowflakes as big as five-cent coin splashed and fell from the gray-white sky. It took only one night to fill the entire Shengjing Capital with a vast white silver cover.

On Wenyi Road next to Nanhu Park and the north gate of the Science and Technology Park, an orange-yellow snowplow truck and a white Jiefang 141 truck with the words "Nanhu Science and Technology Park" printed on it slowly passed by from east to west. Amid the roar of the diesel engine, the snow machine threw a thick off-white snow column into the Jiefang heavy truck's truck's truck's roar.

A large group of children on vacation were extremely curiously following this set of automatic snow removal equipment. The sanitation workers working around the vehicle team occasionally waved large bamboo brooms for snow sweeping to drive away the bold naughty children approaching the snow-cutter.

This set of automatic snow sweeping equipment that looks full of industrial sense is naturally a new thing created by the logistics department of the Science and Technology Park. In the 1980s and 1990s, winter snow removal tasks in the northern Republic were always carried out to units, and the snow removal work on major roads and their affiliated streets were all carried out by major units on both sides of the street.

Liang Yuan drew a circle near the southern river in Shengjing city, basically occupying the entire Shenshuiwan. Then the snow removal task of hundreds of kilometers of streets in the jurisdiction of Shenshuiwan will naturally belong to the Science and Technology Park.

In Shengjing, even the entire Yuanjia gate was not enough for 20,000 people. Even if the entire line was suspended, everyone dispatched this number of people to the snow removal section that was scattered hundreds of kilometers, they had to be responsible for six or seven meters.

Engineers who were engaged in chips, gas turbines, and aircraft were shut down and went to the street to sweep snow. In the past two years, Liang Haiping called on the brothers of the Road Bureau to support the task of sweeping snow in winter in the Science and Technology Park.

Lu'an alone has five or six thousand idle laborers. Under the temptation of one person and one barrel of soybean oil, Lu'an has become a winter snow removal team in the Science and Technology Park.

However, the large-scale production of the Chinese-character pager of Hong Kong-based power collector is imminent, and Lu An, who is doing nothing, will soon become history. The rich Liang Tuhao waved his hand and approved the import of 800,000 US dollars from the Federal Republic of Germany for five medium-sized snowplows.

The only dissatisfaction is that Lu'an, who lost the subsidy for snow removal soybean oil. In the words of Lu'an, the 800,000 US dollars of snow sweeping fee would be enough for Lu'an to contract the snow sweeping task of the Science and Technology Park for twenty years.

However, the mayor in charge of Shengjing City's government affairs was very supportive of the choice of the Science and Technology Park, believing that these five automatic snowplows have effectively enhanced Shengjing City's modern image.

Liang Yuan stretched his waist vigorously, walked to the window and pulled it gently, and opened the exterior window of the hotel equipped with a pneumatic support rod slowly opened outward.

Positioning the opening range of the outer window to the width of the palm, a cold wind mixed with a few snowflakes squeezed in from the window.

The house at home is still being renovated, and Liang and Ning's family did not return to the Scientist Garden, which was close to each other, but instead ordered two suites at Shangri-La Hotel as a temporary residence before the New Year.

"Open the window and blow the wind in the middle of winter to be careful of catching a cold." Li Yuanling's voice sounded behind Liang Yuan.

"The room is very hot, so you can't turn on the air conditioner." Liang Yuan muttered.

Before Liang Yuan could turn around, a thick down jacket wrapped himself tightly.

"I knew my mother was my biological mother at first glance. I was blowing the air in the window just now. My dad flipped his eyelids and ignored me and went straight into the bathroom, as if I had picked it up."

Someone was unscrupulously flattering his mother.

Li Yuanling smiled proudly, grabbed Liang Yuan's ears casually, and said with a smile: "How is it, Mom's boiler is pretty good."

The ed125 gas generator set originated from SBE gas turbine and produced by the Science and Technology Park was delivered by Shangri-La Hotel and the delivery of the Scientist Garden was put into trial operation. The heating heat of the Shangri-La Hotel comes entirely from the waste heat after the power generation of the ed125 unit.

This supporting project named Changbai Experimental Power Station Phase I has four ed12.5 MW/unit ed125 gas turbine generator sets with a full power of 50 MW, which is enough for the daily office electricity use of Shangri-La Hotel, Scientist Garden, Lego Water Park and Science Park.

After three years of research and development, FAW Power, led by Li Yuanling, has completely mastered the Spey turbine system. Two years ago, the two ed120 generator sets sold to Lanhua by FAW to cut the twin-rotor Spey Aviation engines to form a gas turbine unit for ground power generation.

Among the latest ed125 gas generator sets, Li Yuanling, who has outstanding talent in fan design, completely abandoned the original five-stage low-pressure intake fan of SBE Aviation engine, and turned the entire low-pressure compressor into a three-stage low-pressure compressor and a three-stage medium-pressure compressor. If a little adjusted high-pressure compressor part is added, the new ed125 gas turbine generator set has changed from a dual-rotor to a three-rotor.

Compared with the dual-rotor, the three-rotor unit has more medium-voltage compressors, and the intake of the entire unit has increased significantly. With the core machine design unchanged, more intakes represent lower pre-vortex temperatures, while the lower pre-vortex temperatures represent longer service life and greater power enhancement potential.

Of course, the lower unit fuel consumption and greater unit asthma residue due to smooth air intake are also one of the advantages of the three-rotor design.

More importantly, the ed125 gas turbine, from the simplest screws to the most technically difficult gas diversion blades, are all independently produced by Yuanjia system.

Although a small number of heat-resistant alloys are produced using laboratory trial production, this is a milestone breakthrough for Yuanjia's aviation industry system, which means that Yuanjia has a foundation to gain a foothold in the aviation field.

For Li Yuanling, who has already completed the three-rotor Spey generator set on the ground, there is no insurmountable technical difficulty in applying the three-rotor technology to Spey Aviation engines.

what does that mean?

If heat-resistant materials are the material basis for whether an aircraft engine is excellent or not, then the fan is the core of the design of the aircraft engine. The name of jet engine determines that air flow is the most important design indicator for determining the aircraft engine.

Therefore, blades and fans composed of blades have become the focus of Li Yuanling's most energy invested in the past three years.

Swept blades, wide-chord fans, axial flow-level large-scale blade rotors, and three-rotors have become the most critical key reserve technology for FAW Power.

Focusing on the intake interval of the Spey core machine and the key reserve technology of Huachen, Li Yuanling developed thousands of fan models for large-scale data verification, and overcome a series of basic problems such as the blade tip stall of the swept blade, the surface pressure analysis of the large-scale blade rotor of the axial level, and the calculation constant of the subsonic interval of the wide-string fan.

It can be said that Li Yuanling is currently waiting for the supercomputer to be offline, and through the supercomputer's powerful computing and analysis capabilities, it can verify the correctness of the empirical formulas that Li Yuanling has found through a large number of experiments over the past three years.

If Li Yuanling's early work is verified, then it can be said that FAW has conquered the core of the field of computer simulation of aero engines with its own strength. In the future, the design of a SBA combustion chamber will be no pressure on the design of a SBAIC aircraft engine every two years.

In the new technology, the successful application of single-axial flow-level large-scale blade rotor technology is enough to shorten the length of SBY's two-stage compressor by 40%. Even if the improvement of intake efficiency is not taken into account, a large amount of weight reduction can provide a brilliant improvement space for the thrust-weight ratio data.

Taking Rolls-Royce's civil aviation engine product line as a reference, the Spey 512 with a thrust of 55kn is the previous generation of Rolls-Royce. At this time, the popular actor of Rolls-Royce is the Thai Aviation engine with a thrust of 62-69kn, and the RB700 series with a thrust of up to 66-95kn is the future of cooperation between Rolls-Royce and Federal Germany.

Based on Yuanjia's existing heat-resistant materials, the SBE civil aviation engine depth modification designed with sweeping fans, three rotors and some large blades is a very reasonable technical indicator to obtain a thrust increase of 20%-30%. Once successful, it means that the thrust of the civilian SBE will reach 66kn-71kn.

However, due to the insufficient performance of heat-resistant materials, Yuanjia Airlines is definitely inferior to Rolls-Royce's RB700 series in fuel consumption, noise, and full life, but it will definitely gain the ability to fight against Thai turbofan engines. The start system, ignition system, lubricant system, and fuel supply system of Thai aviation engines are all the same as SB. The biggest improvement of Thai is to replace SB's original low-pressure compressor with the low-pressure compressor on the RB211 three-rotor engine.

If Spbe's deep modification is successfully launched, it means that Yuanjia has opened up a large market for at least 1,000 Boeing 727 passenger aircraft modified cargo aircraft on this planet, which is a large market worth at least 3,000 aviation engines worth US$7 billion.

In history, this modification market was successfully swallowed by Luo Luo and Luo, and he ate it all over, adding a large amount of R&D funds to Luo Luo, who had just been privatized.

Of course, Yuanjia still has a lot of work to do in order to achieve this goal. The current design indicators of the ed125 unit are still far from the level of Thai air engines. For example, the service life of the unit gas generator hot end is 2,500 hours. Although the entire unit adopts a maintenance design based on the situation, the maximum time interval of 2,000 hours must be shut down and repaired.

From a stricter standard, the level of this gas turbine power generation equipment is twenty years away from the international mainstream power generation equipment of the same level can be described as the difference between heaven and earth.

Twenty years later, the service life of the e-class gas turbine generator set will be at least 50,000 hours, and the maintenance interval will be as high as 20,000 to 30,000 hours.

Fortunately, Yuanjia still has 20 years to pursue those high-ranking technical indicators. At this time, the international mainstream technical level of e-class gas generator sets is still at the level of hot-end service life of 15,000 hours and 6,000 hours of maintenance intervals. It seems as if it is within reach when gritting its teeth and working hard.

In summary, the Bai Experimental Power Station has a very high chance of entering the competitive field with the technical level of the technology of the Bai Experimental Power Station, but it still has the feasibility of commercial application. The three-rotor technology success has laid a deep foundation for the future SBE to go to heaven again.

Although the road is still tortuous, the future is bright. (~^~)
Chapter completed!