New material of aluminum alloy

Yesterday, the reporter learned from Shanghai Academy of Spaceflight Technology, the hospital in Temple One goal of the task assumed aircraft cabin structure and assembly of resources, power sub-systems, docking mechanism subsystem, control and communication subsystems supporting stand-alone subsystems and overall circuit Resource module cable network research task.

Resource tank “fuel” an increase in total weight was reduced by 10%

Temple One of the energy as a source of resources and power module, and the JEM to be connected with the launch vehicle, in addition to ensuring a reliable connection, the cabin is also equipped with a number of subsystems within and outside the nearly 200 sets of equipment and a large pipe, cable and so on. The structure of the resource module design, installation and testing have brought a lot of problems. Development process with a large number of new technologies, new processes.

aluminium die casting
aluminium die casting

Designed from the start, the resource module is facing, “weight” problem. Because the resources to carry a propellant tank before the Shenzhou spacecraft than an increase of 50% or more, but the construction of the main cabin still hopes for the implementation of weight loss. In this way, before the use of aluminum is difficult to meet the requirements, the first use of aluminum-lithium alloy as the raw material, 10% of successful weight loss for the cabin.

In order to maintain long-term in-orbit requirements of the target aircraft, the entire device carried by the lofty air and oxygen-carrying capacity of a single spacecraft, for environmental control and life support sub-system uses a large-capacity high-pressure composite cylinder for gas storage. It is reported that the inflatable cylinders before and after the change in the direction of larger diameter, the resource module assembly with a certain flexibility in design of cylinders installed bands, difficult to install to solve the problem of the cylinder, greatly reducing the weight of the cylinder mounting bracket for the entire device contributed to weight loss. Aluminium die Casting Heating parts

Power solar “wings” using new technology

For manned space flight, the aircraft power subsystem has always been the lifeline.

This time, Temple One pressure on the semi-rigid solar wing, the technology of China’s first spacecraft power subsystem applications. Externally, two solar wings like a pair of “wings” covered with horizontal black solar film, artful. The face of low-orbit space station environment, before the full use of high-orbiting satellites, are obviously not applicable to rigid panels. After a number of technology experiments, researchers identified the Shanghai grid panels with fiberglass glue and glue concentration in the actual operation and other parameters to determine the carbon-fiber frame with glass fiber mesh of semi-rigid structure.

Butt has gone through 16 years of R & D away

For eight and Temple of God “space Kiss”, Shanghai Academy of Spaceflight Technology 805 development team started from 1995, Principles of docking technology, simulation to explore, to create in 1999 a first prototype of 1:1, from 2000, ten key technology component-level research, developed in 2002 for engineering applications of docking mechanism and the four large-scale research prototype system-level ground simulation test equipment, docking mechanism 2005, sub-systems from the official project to be completed in December 2009 initial research into the positive kind of work, completed in November 2010 is kind of product development to deliver, to the range of 2011 to the base test, the 16-year road to product development from scratch, Aluminum Casting Anodized from there to fine, docking points The journey continues … the system … 

Die Casting Parts

Magnesium Alloy Anodes

Magnesium Anodes have a high negative driving potential which makes them suitable for the protection of steel structures where the environment has a high resistivity, such as in soil and fresh water.
Magnesium Anodes are used extensively for the protection of buried pipelines and also in hot and cold potable water applications. Their corrosion by-products are generally considered non-toxic. Magnesium anodes are generally never used in a salt water environment as they can cause disbanding or removal of paint on wetted surface areas. Magnesium die casting

Zinc Alloy Anodes
Zinc alloy anodes have been used for many years as a most reliable and economic means of providing cathodic protection to the hulls of the world’s steel hulled boats and ships. With the changes in technology in recent years, Aluminium alloys have shown distinct improvements in anode applications for marine use in sea  water. However because of the universal benefits of being able to operate in sea water and fresh waters, Zinc anodes remain very popular in the marine and boating industry.
Large marine structures which require considerable anode mass for cathodic protection, will economically justify the use of Aluminium alloys over Zinc alloy anodes. For most small vessels, the benefits between Zinc and Aluminium alloys may be marginal.
Zinc anodes are widely used in marine environments. However in the right geometry, Zinc anodes, in conjunction with a very good hull coating system, can provide sufficient output to protect steel in higher resistivity environments such as some tidal fresh water estuaries.
It is important to note that at temperatures in excess of 50ºC, hard non-saline waters (such as some fresh water cooling systems) may cause the polarity of a Zinc anode/steel couple to reverse. That is, the steel may become anodic to Zinc and corrode at a rate more rapidly than existed prior to the installation of the anode. zinc die casting
Seek the advice of a corrosion engineer if you expect to experience these conditions.

Aluminium alloy anodes

Die Casting China
The use of Aluminium anodes is generally limited to marine applications. 
The driving potential of Aluminium anodes is slightly higher than zinc anodes. Aluminium alloy anodes are more efficient than the zinc anode alloy, which can provide performance and lifetime benefits of the anode protection system. This results in more protection in the same anode sizes due to the corrosion efficiency of the Aluminium alloys.
Typical uses include applications such as ship hulls, salt water ballast tanks, offshore structures, steel wharf piling and submerged (offshore) pipelines.