探空火箭發射架設計與開發

The Design and Development of Lanuch Rail Structure for Sounding Rocket

黃詮峻(Chuan-chun Huang)

指導教授 ： 胡惠文

國立屏東科技大學/工學院/車輛工程系所/碩士(2014年)

https://doi.org/10.6346/NPUST.2014.00220

摘要

本論文主旨在探空火箭發射架之設計與開發，提供火箭發射之功用。首先，採用電腦輔助工程設計(CAD)技術進行結構與機構設計，其中包含發射軌道、雙塔結構、軌道支撐結構與滑移結構，以及透過理論與電腦輔助機構模擬(RecurDyn)計算出力值驗證，進一步選用機構零組件。透過電腦輔助工程分析軟體(CAE)建立發射架及火箭本體之有限元素模型並且進行靜態分析。靜態分析主要針對發射軌道抬升過程進行結構之剛性及強度評估，其結構應不允許超過使用材料的降伏強度。動態分析是透過電腦工程分析軟體(LS-DYNA)進行分析，主要是針對火箭發射過程，火箭導引銷與發射軌道之間交互作用所產生的結構應力進行評估。透過探空火箭HTTP3S飛行測試驗證發射架結構之設計，在發射後並未發生損壞，並且將飛行測試之數據，包含加速度以及推力曲線進行探討，作為後續變更設計之參考。

關鍵字

發射架 ； 探空火箭 ； 電腦輔助工程設計與分析 ； 結構動態模擬 ； 飛行測試

並列摘要

The objective of this research is to develop a launch rail structure for the launch of sounding rockets. Computer-aided Design (CAD) is first used to design the launch but rail structure, including launch rail, main towers, supported frame, sliding mechanism and power cables, based on the theoretical calculation. Motion and dynamic analysis is performed to obtain the joint forces and to validate the trajectory of mechanism by using a commerical code RecurDyn. Finite element model, including launch rail structure and rocket are developed using a commercial code ANASYS. Static analysis is performed to evaluate the stiffness and strength of the launch rail structure. The deflection and stress level of launch rail are of concern. Deflection is critical to the launch angle which is originally designed to be 95 degree with a tolerance of 3 degree. Material yielding is not allowed during the lifting process of rocket. Dynamic simulation is performed to evaluate the strength of the launch rail structure and the guide pins of rocket by using a commercial code LS-DYNA. The dynamic deflections and stresses of the launch rail and guide pines are of concern. Rocket is not allowed to be obstruested in during the launch process. A flight test is performed to validate the design of launch
rail structure. No damage to the structure is found after the launch. Finally, thtest data, including acceleration and thrust force are used to evaluate the design parameters of the launch rail structure for further improvement.

並列關鍵字

Launch rail structure ； Sounding rockets ； CAD/CAE ； Structure dynamic simulation ； Flight test

參考文獻

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