Astrophotographer Philip Smith, photographed the "Tianhe" core module in New York State, USA on May 6. This is the clearest image of the core cabin taken on the ground so far, and it can be distinguished even by the core cabin manipulator/solar wing and the node cabin.
The robotic arm has climbed to the big column section!
The robotic arm is actually a crawling robot that can crawl around on the anchor points of the entire space station.
The design of this robotic arm is really interesting. It can be free and automatic on the surface of the entire space station. My rabbit engineer's brain is really big.

Figure 1. The sky and core module of the China Space Station captured by photographer Philip Smith in Manoville, New York on May 6.

Figure 2 is a simulated diagram with annotations,

Figure 3 is the real thing.
There is a pair of large robotic arms outside the core capsule of Tianhe, which is my country's first robotic arm with seven degrees of freedom, so that it can achieve motion capabilities similar to human arms in space, with a maximum length of about 18 meters and a diameter when working. Approximately 4 meters, you can grab objects in space, facilitating equipment docking, installation, orbit change, separation and other operations. What do seven degrees of freedom mean? This is the most true restoration of the human arm. Through the docking and separation between the end effector and the target adapter, the core cabin robot arm is similar to the tenon-and-mortise structure commonly used in woodworking. It can realize the cabin crawling function and move to many parts of the space station in a worm-like motion. Reach the outer surfaces of the cabins of the space station in a larger area.

Seven joint drive components and high-precision position sensors are actuators that realize the movement and precise positioning of the robotic arm. As the core component of the robotic arm, it needs to have a small size and large torque output. It can be realized after the robotic arm runs to the specified position Positioning and locking function, so that the mechanical arm is fixed in the corresponding position, and after the position is locked, the end-executing drive assembly realizes the function of target capture and grasping.
There are also robotic arms on the International Space Station, namely
Mobile Servicing System (MSS for short) is a robotic system connected to the International Space Station. It plays a key role in the assembly and maintenance of the space station. It moves equipment and supplies around the space station, helps astronauts work in space, and installs equipment and other payloads on the space station. Astronauts receive special training so that they can use various systems to accomplish these tasks.

The mobile maintenance system is composed of a space station remote manipulator (
SpaceStationRemoteManipulator), a mobile remote maintenance base system (
MobileRemoteServicerBaseSystem), and a special smart manipulator, also known as the "Canada Arm" (
SpecialPurposeDexterousManipulator). This system is loaded by a vehicle provided by the United States and can move along the track of the integrated truss structure. Picture 2
The official name of the Canadian arm (English:
Canadaarm) is the Shuttle Remote Manipulator System (English: ShuttleRemoteManipulatorSystem), which is a series of robotic arms designed by the Canadian Space Agency on the International Space Station to deploy, move, and capture payloads. After the Columbia Space Shuttle disaster, the Canada Arm was used in conjunction with the Orbiter Arm Sensor System (OBSS) to check for damage to the space shuttle's insulation system.
The latest mobile maintenance system on the International Space Station is also called "Canada Arm 2" and was also designed by the Canadian Space Agency. The current Governor of Canada and former astronaut Julie Payette participated in the design and installation of the Canadian arm.

The Canadian Arm 2 is officially called the Space Station Long Range Manipulator System, referred to as SSRMS. It can relocate itself and can move point-to-point to many parts of the space station with a worm-like action. Canada Arm 2 must rely on PDGFs devices, which deliver energy, data, and video to the Canada Arm through its latching end sensor. The Canadian boom can also be carried by a mobile carrier to the entire journey of the integrated truss structure. Most of the time, the operator of the robotic arm can see what they are doing through the three LCD displays on the Robotic WorkStation (RWS). There are 2 RWS units on the MSS, and one RWS unit operates the MSS once. After the completion of the completed International Space Station, one RWS unit is located in the Destiny experiment module, and the other is located in the dome. At present, all RWS units are in the Destiny test cabin. The RWS unit has 2 sets of joysticks: 1 set of rotary manual joysticks and 1 set of translational manual joysticks. Plus display and control panel, and portable computer.
Mobile Base System (MobileBaseSystem) is referred to as MBS, which is the base platform of Canada Arm 2. It was installed on the space station during mission STS-111. The base is mounted on a mobile conveyor that can move it along the orbit of the space station truss. When the Canadian arm 2 is mounted on the base, it can move to any point of the space station truss at a maximum speed of 2.5 cm/s. The mobile base system is made of aluminum. The expected service life is at least 15 years. Like the Canadian Arm 2, it is manufactured by MD Robotics.
With a "Space Force" picture for entertainment and entertainment, I will go to catch the satellites of individual countries to play!
Sorry! The robotic arm says I can't catch this thing! why? Because all the objects it grasps require special interfaces.
MBS is also used to support astronauts' extravehicular operations. It provides a place to store tools and equipment and some safety facilities. When needed, astronauts can even ride on the MBS and move along the space station truss.
One of the advantages of the Tianhe core module "Hercules Arm" compared with the International Space Station's robotic arm is that its seven degrees of freedom perfectly mimic the motion of a human arm. There are also peer-to-peer deterrent functions that everyone knows. ...
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