506
15 System Testing and Validation Technology of Lunar Lander
be kept away from the primary modal frequency of test model in order to avoid
interference caused by resonance.
6. Ground Measurement Subsystem
The ground measurement subsystem consisted of high-speed camera system and load
measurement equipment. In the test, the time history of the displacement, cushion
stroke, velocity, attitude angle, angular rate and angular acceleration at interested
points was measured by high-speed camera, and the time history of acceleration and
load was measured by load measurement equipment.
15.6.4 Test Example
During development of the Chang’E-3 lunar lander, the landing stability test and the
test system were designed and developed. The landing stability test was conducted,
as shown in Fig. 15.14.
Fig. 15.14 Landing stability test of the Chang’E-3 lunar lander
15 System Testing and Validation Technology of Lunar Lander
be kept away from the primary modal frequency of test model in order to avoid
interference caused by resonance.
6. Ground Measurement Subsystem
The ground measurement subsystem consisted of high-speed camera system and load
measurement equipment. In the test, the time history of the displacement, cushion
stroke, velocity, attitude angle, angular rate and angular acceleration at interested
points was measured by high-speed camera, and the time history of acceleration and
load was measured by load measurement equipment.
15.6.4 Test Example
During development of the Chang’E-3 lunar lander, the landing stability test and the
test system were designed and developed. The landing stability test was conducted,
as shown in Fig. 15.14.
Fig. 15.14 Landing stability test of the Chang’E-3 lunar lander