Sun, H., Tang, X., & Ge, S. S. (2025). Advancing Mars Exploration: Development of a Large-Scale Gravity Compensation System for Landers During Descent. IEEE Transactions on Aerospace and Electronic Systems, 1–14. https://doi.org/10.1109/taes.2025.3528921
Abstract:
As space exploration advances, an increasing
number of planets are becoming targets for landing missions.
Before officially launching a lander, it is essential to conduct
landing tests on Earth to verify the functionality of the
lander. One key challenge is to simulate the target planet’s
gravity environment during the lander’s descent. In this
study, a large-scale gravity compensation system is
developed to physically simulate the Martian gravity for the
landing tests of a Mars lander. The system integrates a
constant force mechanism and electronic control systems,
working closely to ensure smooth transitions between
working states during the landing tests. Based on the
principle of minimum potential energy, an expression for the
output force of the constant force mechanism is established,
and the influence of factors such as mechanical parameters
on the output force is analyzed. Experimental results show
that the system can provide gravity compensation for a 720-
kg Mars lander. It maintains a nearly constant output force
even when the lander touches the ground and during the
subsequent period, demonstrating its adaptability to
transient collisions and sudden state changes.
License type:
Publisher Copyright
Funding Info:
There was no specific funding for the research done