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首页> 外文会议>Concorde — the supersonic achievement: celebrating 40th anniversary of the first flight of British prototype >A THEORETICAL ANALYSIS OF UNDERCARRIAGE LOADS AND TAXYING VIBRATION ON A SUPERSONIC TRANSPORT AIRCRAFT WITH EXPERIMENTAL COMPARISONS AND AN ASSESSMENT OF MODIFICATIONS TO REDUCE GROUND LOADS
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A THEORETICAL ANALYSIS OF UNDERCARRIAGE LOADS AND TAXYING VIBRATION ON A SUPERSONIC TRANSPORT AIRCRAFT WITH EXPERIMENTAL COMPARISONS AND AN ASSESSMENT OF MODIFICATIONS TO REDUCE GROUND LOADS

机译：超音速运输飞机上的载重和Taxing振动的理论比较的理论分析，并进行了评估以减轻地面载荷

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Development flying of an SST showed that the vibration during taxying was more severe than hadrnbeen predicted and that the landing impact was harsh. Taxying vibration caused a significant reduction inrnthe predicted fatigue life of the fuselage structure and would have restricted the use of the aircraft onrnpoor runways because of crew discomfort. Flight records showed that friction was causing thernmain oleos to stick much of the time, and when this was included in the calculations good agreement withrnexperiments was obtained. Studies showed that landing and taxying performance of the mainrnundercarriage could be improved by reducing friction, reducing air spring stiffness at taxyingrndeflection, reducing the preload with a two-stage oleo and increasing hydraulic damping. The effects ofrnthese changes on the undercarriage and air-frame loads and structural vibration are considered.
机译：SST的开发飞行表明，滑行过程中的振动比hadrnbeen预测的要严重得多，着陆影响也很严重。滑行振动导致机身结构的预期疲劳寿命大大降低，并且由于机组人员的不适而限制了飞机在较差跑道上的使用。飞行记录显示，摩擦导致主要油质粘在很多时间上，当将其包括在计算中时，就可以与实验取得良好的一致性。研究表明，可以通过减少摩擦，减小滑行偏转时的空气弹簧刚度，使用两级油压降低预载并增加液压阻尼来改善主起落架的着陆和滑行性能。考虑了这些变化对起落架和机身载荷以及结构振动的影响。

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