404
12 Integration and Assembly Technology of Lunar Lander
Fig. 12.3 Robot assembly system for assembly in compact space
technicians. However, the introduction of automated robotic arm greatly reduced the
human-induced operational risks. [7]
In China, the spacecraft automated assembly technology had been developed in
recent years. The automated assembly process equipment such as centroid automation adjustment hanger, Stewart posture adjustment platform and robot assembly
system, could basically meet the requirements of spacecraft research and development. The application of robot assembly system for assembly in compact space of
spacecraft is shown in Fig. 12.3. In system integrated assembly of the Chinese lunar
lander, flexible and automated technological equipment such as electric push-rod
dual-axis turntable was applied to accommodate high-accuracy assembly.
3. Digital Assembly Technology
A great many research had been conducted in digital assembly by major aerospace
companies, including virtual assembly modeling, virtual assembly process planning,
virtual assembly system planning, assembly ergonomic analysis, assembly process
simulation and other virtual assembly technology. A series of prototype system were
established [8]. The three-dimensional stereoscopic display simulation assembly
process of Automatic Aircraft Fuselage Assembly Procedure (AAAP) developed
by Northrop Corporation of the United States was applied to an improved version of
United States Air Force F-18 fighter jet. In the design of Boeing 777 aircraft, application of digital prototype technology based on virtual assembly reduced the cost
by 94% and the design change by 93%, and the manufacture cycle was shortened
by 50%. Chryssolouris, a manufacture system laboratory at University of Patras,
Greece, developed a virtual assembly work unit and took the assembly of a propeller
of a speedboat as an example to analyze and evaluate the factors on assembly time
12 Integration and Assembly Technology of Lunar Lander
Fig. 12.3 Robot assembly system for assembly in compact space
technicians. However, the introduction of automated robotic arm greatly reduced the
human-induced operational risks. [7]
In China, the spacecraft automated assembly technology had been developed in
recent years. The automated assembly process equipment such as centroid automation adjustment hanger, Stewart posture adjustment platform and robot assembly
system, could basically meet the requirements of spacecraft research and development. The application of robot assembly system for assembly in compact space of
spacecraft is shown in Fig. 12.3. In system integrated assembly of the Chinese lunar
lander, flexible and automated technological equipment such as electric push-rod
dual-axis turntable was applied to accommodate high-accuracy assembly.
3. Digital Assembly Technology
A great many research had been conducted in digital assembly by major aerospace
companies, including virtual assembly modeling, virtual assembly process planning,
virtual assembly system planning, assembly ergonomic analysis, assembly process
simulation and other virtual assembly technology. A series of prototype system were
established [8]. The three-dimensional stereoscopic display simulation assembly
process of Automatic Aircraft Fuselage Assembly Procedure (AAAP) developed
by Northrop Corporation of the United States was applied to an improved version of
United States Air Force F-18 fighter jet. In the design of Boeing 777 aircraft, application of digital prototype technology based on virtual assembly reduced the cost
by 94% and the design change by 93%, and the manufacture cycle was shortened
by 50%. Chryssolouris, a manufacture system laboratory at University of Patras,
Greece, developed a virtual assembly work unit and took the assembly of a propeller
of a speedboat as an example to analyze and evaluate the factors on assembly time