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Laboratory Tests of Rolling Resistance of Different Tread Profiles for the Wheel of Martian Roverr

Gorzym Michał, Markuszewski Damian

Advances in Science and Technology. Research Journal

2024

Vol. 18, no 3

280--295

The aim of the research was to design and build a research stand that can be used to compare different types of tire tread profiles of the Mars rover (made using 3D printing) and to select the one that meets the criterion of the lowest power consumption of the drive motor, which corresponds to the minimum rolling resistance in paved area. As part of the task, a research stand was designed and built, consisting of two drive units of the tested drive system: one as a driving unit, the other as a driven unit, generating resistance when rolling one tire after another. During the tests, the following parameters were measured: the amplitude of the supply current, the rotational speed, information about which was obtained from the motor controller and the encoder located in the BLDC motor, and their variability over time. Additionally, the amplitude of the force pressing the wheel against the supporting surface, which generated tire deflection, was also measured. A relationship was demonstrated between the type of tire tread used, the force pressing the tires against the supporting surface and the rolling resistance forces of the Mars rover tires. The tire with the lowest rolling resistance under given operating conditions was selected.

The construction of the Ares II Martian rover’s running gear (suspension)

Miś T. A.

Zeszyty Naukowe Instytutu Pojazdów / Politechnika Warszawska

2015

z. 4/104

63--76

In this paper the author discusses shortly the problematics of functioning of special Mars research vehicles (Mars rovers), along with the University Rover Challenge, and presents an approach to the new vehicle’s running gear construction. This included calculations on springs, tractive and mechanical efforts, vibrations and final tests of the whole assembly during the Challenge at the Mars Desert Research Station. These tests confirmed that made calculations were correct and proved the developmental potential of the new vehicle.

W tej pracy omówiono krótko problematykę funkcjonowania pojazdów badawczych przeznaczonych na Marsa w kontekście zawodów University Rover Challenge oraz nową konstrukcję zawieszenia do pojazdu tego typu. Omówiono obliczanie elementów podatnych, drgań, własności trakcyjnych pojazdu oraz własności mechanicznych elementów zawieszenia wraz z ich testami rzeczywistymi na Mars Desert Research Station, które potwierdziły poprawność wykonanego projektu oraz jego potencjał rozwojowy.