Design Optimization of Grids in Grid Fins for Spacecrafts

Q3 Engineering

International Journal of Vehicle Structures and Systems Pub Date : 2022-12-25 DOI:10.4273/ijvss.14.7.14

R. Mohankumar, P. Premkumar, Sreejith Ravichandran, K. Aravindkumar, T. Krishna Raagavendhar

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Abstract

Grid fins are a type of aero control surfaces used in missiles and rockets in place of more conventional control surfaces such as the planar fins. Conventional planar fins are designed like miniature wings whereas grid fins have smaller lattice aerostructures arranged within a box-like structure. Most grid fins have square grid aerostructures such as those used in the Falcon 9 rocket manufactured by SpaceX. This paper discusses the introduction of 3 innovative designs namely trapezoidal, triangular and hexagonal grids in two configurations - un-tapered and tapered. The taper angles will be 6, 6.5, 7 and 7.5. These new designs will be modelled and analysed using suitable software. The designed grid fins will be simulated in multiple aerodynamic conditions at various angles of attack. The exit velocity of air at the outlet of the grid fin will be measured and analysed in this paper. Once the simulation is complete, the two best designs will be 3D printed with appropriate materials at appropriate scales for wind tunnel testing. The results will be compared and validated with existing data in order to find the overall effectiveness of the designs.

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航天器栅格翼中栅格的优化设计

栅格翼是一种用于导弹和火箭的气动控制面，以取代更传统的控制面，如平面翼。传统的平面翅片被设计成微型机翼，而栅格翅片则具有较小的点阵气动结构，排列在盒状结构中。大多数栅格翼都是方形栅格航空结构，比如SpaceX制造的猎鹰9号火箭上使用的结构。本文讨论了三种创新设计的介绍，即梯形，三角形和六边形网格在两种配置-非锥形和锥形。锥度角为6挺拔，6.5挺拔，7挺拔和7.5挺拔。这些新设计将使用合适的软件进行建模和分析。设计的栅格翼将在不同迎角的多种气动条件下进行模拟。本文将测量和分析栅格翅片出口处的气流出口速度。一旦模拟完成，两个最佳设计将用适当的材料在适当的尺度上进行3D打印，用于风洞测试。结果将与现有数据进行比较和验证，以找到设计的整体有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Vehicle Structures and Systems Engineering-Mechanical Engineering

CiteScore

0.90

自引率

0.00%

发文量

期刊介绍： The International Journal of Vehicle Structures and Systems (IJVSS) is a quarterly journal and is published by MechAero Foundation for Technical Research and Education Excellence (MAFTREE), based in Chennai, India. MAFTREE is engaged in promoting the advancement of technical research and education in the field of mechanical, aerospace, automotive and its related branches of engineering, science, and technology. IJVSS disseminates high quality original research and review papers, case studies, technical notes and book reviews. All published papers in this journal will have undergone rigorous peer review. IJVSS was founded in 2009. IJVSS is available in Print (ISSN 0975-3060) and Online (ISSN 0975-3540) versions. The prime focus of the IJVSS is given to the subjects of modelling, analysis, design, simulation, optimization and testing of structures and systems of the following: 1. Automotive vehicle including scooter, auto, car, motor sport and racing vehicles, 2. Truck, trailer and heavy vehicles for road transport, 3. Rail, bus, tram, emerging transit and hybrid vehicle, 4. Terrain vehicle, armoured vehicle, construction vehicle and Unmanned Ground Vehicle, 5. Aircraft, launch vehicle, missile, airship, spacecraft, space exploration vehicle, 6. Unmanned Aerial Vehicle, Micro Aerial Vehicle, 7. Marine vehicle, ship and yachts and under water vehicles.