Failures occurred on cardan coupling are analyzed by using of photographs which have been taken.
Mehmet UÇAR 1999, 'FACTORS EFFECTTING ON FAILURE AT CARDAN COUPLINGS AND PRECAUTIONS WHICH MUST BE TAKEN',Pamukkale University Journal of Engineering Scienceshttp://dergipark.ulakbim.gov.tr/pajes/article/view/5000089960. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It consists of three landing feet, landing legs, cardan element, damping element, equipment base, anchoring system, and so on.
Zhijun Zhao, Jingdong Zhao, Hong Liu 2013, 'Development of a Landing Mechanism for Asteroids with Soft Surface', International Journal of Aerospace Engineeringhttp://dx.doi.org/10.1155/2013/873135. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)