4.4 Mechanism Design and Verification of Lunar Lander
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2) Environmental test
The transfer mechanism should withstand complex load environment including
launch and landing. During the development of CE-5, the transfer mechanism should
be verified through component environmental test, mechanics environment of test
the lander and the landing impact environment.
(1) Mechanical environmental test
For the mechanical environment during launch phase of the lunar lander, the transfer
mechanism was conducted a sinusoidal vibration test and a random vibration test
at the qualification level. For the quasi-static load during the landing process, an
acceleration test was conducted on the transfer mechanism. In addition, the transfer
mechanism would conduct sinusoidal vibration, random vibration, and noise tests
with the lander and passes a landing impact test.
(2) Verification test of lunar surface environmental adaptability.
The lunar surface environmental tests of the transfer mechanism included extreme
high and low temperature environmental tests and lunar dust environmental tests,
and the high and low temperature performance and dust resistance of the transfer
mechanism and its main moving parts were verified.
4.5 Summary
In this chapter, the characteristics of the lunar lander structure and mechanism are
briefly introduced. Based on this, the factors that should be considered in the lunar
lander structure and mechanism design are analyzed. For example, the lunar lander
structure and mechanism design, analysis and verification methods are described
for the Chang’E-3 lunar probe that has been successfully launched. On December 2,
2012, the Chang’E-3 lunar probe was successfully launched. The lander structure and
mechanism successfully completed the expected tasks. Its function and performance
passed the flight test assessment. It was indicated that China had initially mastered
the lunar lander key technologies for structural and mechanism design.
It shall be noted that in deep space exploration, the structure and mechanism
design of the deep space probes are closely related to the task characteristics of the
probe. Different deep space probes may not have the same structure and require
different mechanisms to complete different functions. The structure and mechanism
design of the probe should be based on a comprehensive analysis of mission of the
probe to carry out corresponding design, analysis and verification work.
149
2) Environmental test
The transfer mechanism should withstand complex load environment including
launch and landing. During the development of CE-5, the transfer mechanism should
be verified through component environmental test, mechanics environment of test
the lander and the landing impact environment.
(1) Mechanical environmental test
For the mechanical environment during launch phase of the lunar lander, the transfer
mechanism was conducted a sinusoidal vibration test and a random vibration test
at the qualification level. For the quasi-static load during the landing process, an
acceleration test was conducted on the transfer mechanism. In addition, the transfer
mechanism would conduct sinusoidal vibration, random vibration, and noise tests
with the lander and passes a landing impact test.
(2) Verification test of lunar surface environmental adaptability.
The lunar surface environmental tests of the transfer mechanism included extreme
high and low temperature environmental tests and lunar dust environmental tests,
and the high and low temperature performance and dust resistance of the transfer
mechanism and its main moving parts were verified.
4.5 Summary
In this chapter, the characteristics of the lunar lander structure and mechanism are
briefly introduced. Based on this, the factors that should be considered in the lunar
lander structure and mechanism design are analyzed. For example, the lunar lander
structure and mechanism design, analysis and verification methods are described
for the Chang’E-3 lunar probe that has been successfully launched. On December 2,
2012, the Chang’E-3 lunar probe was successfully launched. The lander structure and
mechanism successfully completed the expected tasks. Its function and performance
passed the flight test assessment. It was indicated that China had initially mastered
the lunar lander key technologies for structural and mechanism design.
It shall be noted that in deep space exploration, the structure and mechanism
design of the deep space probes are closely related to the task characteristics of the
probe. Different deep space probes may not have the same structure and require
different mechanisms to complete different functions. The structure and mechanism
design of the probe should be based on a comprehensive analysis of mission of the
probe to carry out corresponding design, analysis and verification work.