Flexible Diana 2 Scaled Glider UAV - Ground Vibration Test Results

This dataset contains the ground vibration test (GVT) results for a 1:3 scaled Diana 2 glider UAV. The test was conducted with the glider suspended using elastic bands to simulate free-free boundary conditions, and the structure was excited at multiple locations using a modal hammer.Structural responses were measured across the airframe using:Inertial measurement units (IMUs) capturing tri-axial accelerations and angular ratesStrain gauges placed at key structural points on the wings and tail measuring bending and shear strains<br>The data was acquired using a custom-built instrumentation system developed specifically for the glider UAV. To validate the results and the accuracy of the integrated acquisition system, a reference system with additional accelerometers was installed on the airframe surface during the test.This dataset includes:Frequency response functions (FRFs) for all sensors (accelerometers, gyroscopes, and strain gauges)Experimental modal analysis results, including estimated modal frequencies, damping ratios, and mode shapes for modes up to 70Hz.<br>A finite element (FE) model of the glider was created and tuned using the identified modes, enabling comparison and validation of the estimated structural dynamics, particularly the rotational mode shapes.The modal analysis was performed using Siemens Testlab 2021. The FRFs and mode estimation results are provided both in proprietary (.lms) format and in standard Universal File Format (.unv) to ensure compatibility with a wide range of post-processing tools.

本数据集包含1:3缩比戴安娜2号（Diana 2）滑翔机无人机的地面振动试验（Ground Vibration Test, GVT）结果。
本次试验采用弹性带悬挂滑翔机以模拟自由-自由边界条件，并通过模态锤在多个点位对结构施加激振。试验通过以下方式采集机身全范围的结构响应：惯性测量单元（Inertial Measurement Unit, IMU）采集三轴加速度与角速率数据；粘贴于机翼与尾翼关键结构点位的应变片，用于测量弯曲与剪切应变。
本次试验采用专为该滑翔机无人机定制开发的测试采集系统完成数据采集。为验证试验结果与集成采集系统的精度，试验期间在机身表面加装了搭载额外加速度计的参考系统。
本数据集涵盖以下内容：所有传感器（加速度计、陀螺仪与应变片）的频响函数（Frequency Response Function, FRF）；实验模态分析结果，包括截至70Hz的各阶模态的估计模态频率、阻尼比与振型。
研究人员构建了该滑翔机的有限元（Finite Element, FE）模型，并基于识别得到的模态对模型进行了修正，以此实现对估计得到的结构动力学特性（尤其是旋转振型）的对比与验证。
本次模态分析采用西门子Testlab 2021完成。频响函数与模态估计结果同时提供专有格式（.lms）与标准通用文件格式（.unv），以兼容各类后处理工具。