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首页> 外文期刊>Acta astronautica >Recent advance on design and manufacturing of composite anisogrid structures for space launchers
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Recent advance on design and manufacturing of composite anisogrid structures for space launchers

机译：用于太空发射器的复合隔栅结构设计和制造的最新进展

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摘要

Anisogrid composite shells have been developed and applied since the eighties by the Russian technology aiming at critical weight structures for space launchers, as interstages and cone adapters. The manufacturing process commonly applied is based on the wet filament winding. The paper concerns with some developments of design and manufacturing recently performed at the Italian Aerospace Research Center on a cylindrical structural model representative of this kind of structures. The framework of preliminary design is improved by introducing the concept of suboptimal configuration in order to match the stiffness requirement of the shell and minimise the mass, in conjunction with the typical strength constraints. The undertaken manufacturing process is based on dry robotic winding for the lattice structure and for the outer skin, with the aid of usual rubber tooling and new devices for the automated deposition strategy. Resin infusion under vacuum bag and co-cure of the system of ribs and skin is finally applied out-of-autoclave, with the aid of a heated mandrel. With such approach an interstage structural model (scale factor 1:1.5) has been designed, manufactured and tested. Design requirements and loads refer to a typical space launcher whose baseline configuration is made in aluminium. The global mechanical test of the manufactured structure has confirmed the expected high structural performance. The possibility to reach substantial weight savings in comparison with the aluminium benchmark has been fully demonstrated.
机译：八十年代以来，俄罗斯技术开发并应用了Anisogrid复合材料壳体，其目标是作为空间发射器的关键配重结构，例如级间和圆锥形适配器。通常采用的制造工艺基于湿丝缠绕。本文涉及最近在意大利航空研究中心进行的代表这种结构的圆柱结构模型的设计和制造方面的一些发展。通过引入次优配置的概念来改进初步设计的框架，以配合壳体的刚度要求并最小化质量，并结合典型的强度约束。所采用的制造工艺是基于干式机械手绕组的晶格结构和外层，借助常用的橡胶工具和用于自动沉积策略的新设备进行的。最终，在加热的芯棒的帮助下，在真空釜中进行真空袋中的树脂注入以及肋骨和皮肤系统的共固化。通过这种方法，已经设计，制造和测试了级间结构模型（比例因子为1：1.5）。设计要求和载荷是指典型的太空发射器，其基线配置是用铝制成的。成品结构的全球机械测试已确认了预期的高结构性能。与铝制基准相比，可以显着减轻重量。

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  • 来源
    《Acta astronautica》 |2012年第2期|570-577|共8页
  • 作者

    G. Totaro; F. De Nicola;

  • 作者单位

    Advanced Materials and Technologies Laboratory, CIRA-Italian Aerospace Research Center, Via Maiorise, 81043 Capua (CE), Italy;

    Advanced Materials and Technologies Laboratory, CIRA-Italian Aerospace Research Center, Via Maiorise, 81043 Capua (CE), Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    anisogrid; interstage; composite; winding;

    机译：异格级间综合;缠绕;

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