Title: Design of a novel semi-tracked air-cushion vehicle for soft terrain

Authors: Zhe Luo, Fan Yu, Bing-Cong Chen

Addresses: Institute of Automotive Engineering, Shanghai Jiao Tong University, Shanghai 200030, China. Insitute of Automotive Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Husashan Road 1954, Shanghai 200030, China. Jilin University, Changchun 130025, China

Abstract: In order to improve the crossing ability and the tractive performance of a vehicle operating on soft and wet terrain, the travelling mechanism must be properly designed and the adaptation ability to the changes of prevailing operation conditions is obviously needed. Based on the previous researches and developments of a wheeled air-cushion vehicle and a semi-walking wheeled air-cushion vehicle, a new hybrid vehicle that combines air-cushion technology with a travelling mechanism, i.e. a semi-tracked air-cushion (STAC) vehicle, has been developed. This paper proposed a new design principle for the semi-track air-cushion vehicle. A novel structure, i.e. a flexible joint mechanism as the prototype suspension system, is particularly described. Based on theoretical analysis, an optimisation model is established for minimising total power consumption. Experiments have been carried out to investigate the relationships among load distribution ratio, slip ratio, clearance height, vehicle speeds, resistances and power consumption in given terrain conditions. Experiment and simulation results showed that the developed vehicle can meet the demand of tractive and transport efficiency with its optimal state of using minimum total power consumption, and also satisfactory directional stability and ride comfort performances can be obtained.

Keywords: semi-tracked; air-cushion; vehicle; suspension; control.

DOI: 10.1504/IJVD.2003.002051

International Journal of Vehicle Design, 2003 Vol.31 No.1, pp.112-123

Published online: 15 Aug 2003 *

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