15.2 Development Status
491
Fig. 15.5 Lunar lander drop
test 1 Lunar lander test
model; 2 Needle shaped steel
frame structure; 3 Landing
platform; 4 Electric lock; 5
Camera
be adjusted to get the required vertical landing velocity. In order to simulate the
horizontal motion of the lunar lander in contact with the simulated lunar soil, the
needle shaped steel frame structure could be rotated according to the required velocity
relative to the vertical axis. The test platform could simulate the landing process with
the vertical landing velocity of 5 m/s and the horizontal landing velocity of 3 m/s.
The drop test process of Luna-21 lunar lander is shown in Fig. 15.6.
15.3 Requirement
15.3.1 Principles of Test Planning
The basic principles should be followed when the test systems for system level ground
validation of the lunar rover was planned.
(1) It should be able to fully verify the test object.
(2) The experiment boundary condition should not be lower than the real
environment condition of the lunar lander.
(3) On the basis of test objective satisfied, the test method should be as simple,
safe and reliable as possible.