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China's first private rocket will be airlifted to ten national academies

via:重庆日报     time:2018/5/17 9:01:59     readed:446

(Original title: China's first privately-owned rocket will be airlifted and affixed with ten national aeronautical academies)

good news! Assembly exercise nearly 10 times, each error within 0.01mm

The rocket is transported in four stages and the overloaded environment data is lower than the design value

More good news revealed today...

"Chongqing Liangjiang Star" rocket launch simulation map. (This edition is provided by Zero Space.)

Solid rocket motors.

The OS-X rocket is in a state of assembly and training.

The rocket has completed the final assembly installation error to within 0.01 millimeters

On the morning of the 16th, in the factory building of a launch base in the west, Chongqing Daily reporter saw the "Chongqing Liangjiang Star" rocket that had been completed. At this point, the 9-meter-long rocket "lays flat" on the flatbed. Below the flatbed is a track that is easy to slide.

According to Cai Wei, a member of the Zero Space Team, rockets must be assembled and tested at a special assembly plant before being launched, and then transported to the launch pad for final testing and launch.

From the assembly plant to the launch pad, there is usually a long distance to keep the assembly plant away from the launch pad to ensure its safety. This distance is about 1000 meters.

From the assembly plant to the launch pad, the rocket can adopt two modes of transportation: First, the carrier rockets are horizontally assembled and tested horizontally, and transported horizontally to the launch pad via a flatbed or railcar, and then erected; first, the launch vehicle adopts vertical assembly. , vertical test, and vertical transport to a launch pad through a special vehicle.

Both methods have advantages and disadvantages -

The former has no excessively high requirements for the height of the assembly plant, the construction cost is low, and the horizontal assembly and level test of the rocket bring convenience to all the work. After the rocket assembly test is completed, it is easier to transport horizontally. The disadvantage is that when the rocket is transported to the launch pad, it must go through a complicated vertical erection process, and rocket components that are well-tested horizontally are likely to cause problems such as loose plugs and loose connections during vertical erection, which can lead to serious launches. failure.

Because the latter is assembled and tested and transported in a vertical state, problems such as the looseness of plugs and connectors will not occur during transportation, and launch reliability can be guaranteed. The disadvantage is that it requires the construction of a tall assembly plant, and it is also very difficult for the high and heavy rockets to be transported vertically. Most of Russian large-scale carrier rockets use horizontal transportation, while large-scale US carrier rockets use vertical transportation. Chinese carrier rockets have also mainly adopted horizontal transportation in the past.

The Chongqing Daily reporter saw the situation on the spot. The "Chongqing Liangjiang Star" rocket took the form of horizontal assembly, level testing, and horizontal transportation to the launch pad by flatbed or railcars.

Cai Hao said that zero-foot space is very harsh on the final assembly of rockets. There have been nearly 10 drills conducted before. The installation errors of various components are accurate to less than one-hundredth of a millimeter, and the error space is not even enough for a hair.

Rocket transport monitoring throughout the four stages to the launch base

Why should rockets be assembled before launch? Cai Yu introduced that the parts of "Chongqing Liangjiang Star" were manufactured in Beijing, Jiangxi, and other places, and were transported to the launch base in the tail section, engine, control cabin, and load compartment section four weeks ago.

There are usually three modes of transport for transporting rockets to the launch site - road transport, rail transport, and sea transport.

In the three modes of transport, shipping is currently the best choice.

“Rockets take highways and railways like sitting on a ‘hardboard bed’; taking a boat to go by sea is like sitting on a sofa.” Cai Wei said that the mode of transportation is stable and there is an important consideration—overload environment. An overloaded environment, simply understood as the situation of accelerated driving, emergency braking, etc. encountered when driving, poor overload environment will harm the structure of the rocket.

Because of the location of the launch in the inland areas, the rockets used road transport, which made it difficult to control the overloaded environment.

“We have chosen a company with special transportation qualifications to carry the company, and use the instrument for the entire process of transport, monitoring of overloaded environment.” Cai Wei said that the start, acceleration, and braking of the transport vehicle will leave overloaded environment data and vibration environment data. Let the rockets be transported steadily, and the speed of transportation vehicles is strictly controlled within 80 km/h.

“Overall, the overloaded environment data of the rocket arrived at the launch base was much lower than our design value.” Cai Wei said that the smaller the overload data value, the more stable the rocket’s transport environment and the more impact it has on the rocket structure. Small, this helps the rocket safely reach its destination.

Ten top aerospace academies in China have posted badges on their bodies

At 10 o'clock on the morning of the 16th, there was also the launching ceremony of the “Advanced Aerospace Technology Validation Flying Alliance” in Beijing, China University of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Northwestern Polytechnical University, Harbin Institute of Technology, Nanjing University of Science and Technology, Xidian University Relevant persons in charge of the ten top aerospace academies of the University of Xiamen, Zhejiang University, Central South University, and the University of Electronic Science and Technology put their school badges on the rockets.

It is understood that "Advanced Aerospace Technology Certification Flight Alliance" is initiated by Zero Space, and is committed to building an innovative, shared, and open frontier technology verification platform. The alliance is based on the OS-X series of flight test platforms, and hopes to reduce the threshold for technical verification through low-cost, high-frequency and combined flight tests, and accelerate the effective conversion of space technology to enrich the country's space and space Mature technology reserves.

Relevant person in charge of Beijing University of Aeronautics and Astronautics said that in the past, universities and colleges wanted to experiment, and they could only do it through computer simulations. The Zero-Range Space X-Series rocket platform provides a more realistic environment for flight experiments in colleges and universities. In this way, major universities can further verify their own research success. He said that the establishment of a flying alliance will help integrate the resources of universities and colleges and set the forces of universities to promote the development of the aerospace field.

The Flying Alliance is an open, innovative, and shared platform. It will realize “three hundred” in 2020: 100 member companies in the alliance, X-series platforms will complete 100 scientific research missions each year, and single technology verification in single flight test. The funding is within 1 million yuan.

Outlook >>>

The next launch may be at the satellite launch center

The "Chongqing Liangjiang Star" is a suborbital rocket that is not equipped with satellites and was not launched at the satellite launch center.

On May 17, China’s first self-developed commercial rocket, the “Chongqing Liangjiang Star”, was launched at a launch base in western China. The person in charge of the zero-size space indicated that this time it was launching a sub-orbital rocket and the flight altitude had not reached the minimum orbit height of the artificial satellite.

This time, the "Chongqing Liangjiang Star" has no satellites, so it does not need to be launched by a satellite launch center. Once private commercial rockets carry satellites to heaven, they need to launch at our four major satellite launch centers. they are, respectively:

Jiuquan Satellite Launch Center

Founded in 1958, it is the main base for testing and launching Long March series of launch vehicles, various test satellites in low and medium orbit, application satellites, manned spacecraft and rocket missiles.

Taiyuan Satellite Launch Center

Founded in 1967, it is the main base for medium- and low-orbit satellites and launch vehicles that are mainly responsible for testing and launching various types of meteorology, resources, and communications in the sun-synchronous orbit.

Xichang Satellite Launch Center

Founded in 1970, it is the main base for testing and launching geostationary satellites such as broadcasting, communications, and meteorology.

Wenchang Satellite Launch Center

Founded in 2009, it is mainly responsible for testing and launching of spacecraft such as geostationary satellites, large-mass polar-orbiting satellites, large tonnage space stations, and deep space exploration satellites.


Zero-Rock Rocket Core Technology's "Most"

The Chief Reporter of the newspaper Chen Wei reporter Yang Jun

Zero-size space X series rockets - "Chongqing two rivers star" number of the first flight is approaching, more and more people are more concerned about the zero-foot space rocket technology exactly "few kilograms or two." On May 16th, a reporter from the Chongqing Daily News interviewed the relevant experts of the Zero-Yan Rocket to decrypt the core technology of the Zero-Range Rocket for you.

1Autonomously master solid rocket motor technology

The Zero-Space X-series rocket engine has successfully completed the joint trial run on December 22, 2017. 35 seconds after the engine was shut down, the test was a complete success. This is also the first commercial solid rocket engine in China. The old engine experts who came to the scene to give the “three most” gave this trial summary: the first most: only 9 months from the start of the project to the joint commissioning of the engine, the shortest period in the history of China’s aerospace; The second most: using a streamlined R&D team and trial team configuration to successfully complete the mission, the personnel of the company was the least in the history of aerospace; the third most: reducing the weight of the rocket's electrical core product integrated control system to one-tenth of the traditional product, The highest level of integration is the highest in aerospace history.

2 gas rudder subjected to high temperature test

In April 2017, Zero-Wall Space successfully completed a combined heat and heat test of the gas rudder. The gas rudder has withstood the high temperature test. In this test process, Zero-Range space was equipped with a gas rudder and a force measurement system independently designed and developed by the company. The gas rudder force measuring system is used to measure the force and torque of the gas rudder in the gas flow of the engine. At present, only a few domestic units have this test capability and the cost is huge.

3 integrated control system only 1.8 kg

The integrated control system is the "brain" of the rocket. The integrated control system of zero space is not only its own research and development, but also has a lot of innovation on the technical level. The integrated control system adopts an integrated design concept and integrates functions such as flight control solution, timing control, power supply and distribution, GPS reception, and telemetry system data acquisition and coding and modulation of the traditional control system. The weight is only 1.8 kg, and the design is integrated. Significantly reduce the equipment weight and cost on the arrow.

4 Create the first commercial flight test platform

The OS-X series rockets are the first commercial flight test platforms in China and are mainly used to meet the needs of customers for flight tests.

"At home, many customers also have flight test needs, but there is no such platform in China." Zero-size space related responsible person said that the market is also the reason they decided to build this platform.

5 first flight carrying multiple research tasks

The "Chongqing Liangjiang Star" will fly for the first time, and Zhaixi will also carry out the first domestic research on innovative technologies such as "arrow wireless communication", "reduction drag rod" and "low-cost energy" to lay a foundation for simplifying rocket system design and reducing research and development costs. A solid foundation.

"Chongqing Liangjiang Star" Rocket Introduction

Structure: tail section, engine, control cabin, load compartment 4 sections

Height: about 9 meters

Launch: The rocket is horizontally assembled, level tested, and transported horizontally to the launch pad, then vertical launch

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