用3D打印做低成本火箭舵机云台，学生也能玩转推力矢量控制。
Design and Testing of a Low-Cost 3D-Printed Servo Gimbal for Thrust Vector Control in Model Rockets
- 3D打印+伺服电机实现二维可调云台，设计迭代超60次。
- 响应时间约44.5毫秒，稳定偏转范围±5度。
- 适合学生和爱好者，可作为航天教育实验平台。
推力矢量控制（TVC）是稳定火箭飞行的关键技术，但传统方案成本高、难普及。本文提出一种低成本、3D打印的伺服驱动二维云台，专为模型火箭设计。云台历经60余次CAD迭代，伺服选型基于扭矩、响应时间和稳定性要求。通过高速摄像与Fusion 360参数仿真模拟动态失稳，评估了角位移、伺服响应及结构耐久性。结果表明，系统可在±5度范围内稳定工作，平均响应时间为44.5毫秒；局限在于长期负载下伺服疲劳与销轴应力。该研究验证了学生可及的推力矢量控制系统可行性，具备可复现性，适用于STEM教育与实验航空航天研究。
原文摘要 · Abstract (English)
Thrust vector control (TVC) is a key mechanism for stabilizing rockets during flight, yet conventional implementations remain costly and technically inaccessible to students and hobbyists. This paper presents the design, fabrication, and testing of a low-cost, 3D-printed, servo-driven two-dimensional gimbal developed for model rocket applications. The gimbal underwent more than 60 CAD iterations, with servo selection guided by torque, response time, and stability requirements. A high-speed camera and Fusion 360 parameter simulations were used to emulate dynamic instability, enabling evaluation of angular deflection, servo responsiveness, and structural durability. The results demonstrated stable actuation within plus or minus 5 degrees, with response times on the average order of 44.5 ms, while limitations included servo fatigue and pin-joint stress under extended loading. The project highlights the feasibility of student-accessible thrust vector control systems and their potential as a reproducible platform for STEM education and experimental aerospace research.
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