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2010•Journal of AstronauticsRequires access

Analysis on the Influencing Factors of Performance in Lunar Lander

Hong Nie

Open publisher page 1 citations

Abstract

The soft landing system is the key composition of the lunar lander. In the overall study of the design and performance of the lunar Lander,analysis of touchdown dynamics of the landing stage is an important part. In this paper,firstly,the mathematical model considering the influence of the coefficient in lunar surface,the landing terrain,the tailoff thrust of the roketengine with 3 degrees for simulating the touchdown dynamics of soft landing is presented. Secondly,based on the model,the influences of the coefficient and terrain of the lunar soil,the tailoff thrust,the landing velocity to the performance of landing are studied. Result indicated that the coefficient of friction,the landing terrain play an important role in the structure design of lunar lander. The oversized thrust can lead to the tumbling of lander.

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What this paper is about

The soft landing system is the key composition of the lunar lander. In the overall study of the design and performance of the lunar Lander,analysis of touchdown dynamics of the landing stage is an important part. In this paper,firstly,the mathematical model considering the influence of the coefficient in lunar surface,the landing terrain,the tailoff thrust of the roketengine with 3 degrees for simulating the touchdown dynamics of soft landing is presented. Secondly,based on the model,the influences of the coefficient and terrain of the lunar soil,the tailoff thrust,the landing velocity to the performance of landing are studied. Result indicated that the coefficient of friction,the landing terrain play an important role in the structure design of lunar lander. The oversized thrust can lead to the tumbling of lander.

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Available abstract

The soft landing system is the key composition of the lunar lander. In the overall study of the design and performance of the lunar Lander,analysis of touchdown dynamics of the landing stage is an important part. In this paper,firstly,the mathematical model considering the influence of the coefficient in lunar surface,the landing terrain,the tailoff thrust of the roketengine with 3 degrees for simulating the touchdown dynamics of soft landing is presented. Secondly,based on the model,the influences of the coefficient and terrain of the lunar soil,the tailoff thrust,the landing velocity to the performance of landing are studied. Result indicated that the coefficient of friction,the landing terrain play an important role in the structure design of lunar lander. The oversized thrust can lead to the tumbling of lander.

Key concepts: Touchdown, Soft landing, Moon landing, Terrain, Thrust, Geology, Aerospace engineering, Geodesy

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