高空分段拼装式光学窗口防护装置的设计

针对大视场角航空相机常用的高空分段拼装式光学窗口阶差小的问题, 提出了一种适用于该类光学窗口的防护装置。分析了高空分段拼装式光学窗口的任务需求和高空工作环境, 完成了整个防护装置的设计; 确定了传动机构的参数并对其传动精度进行了分析。最后进行了振动试验和高空环境模拟试验。分析及试验结果表明, 所研制的防护装置基频达到111.9 Hz, 保证了在外界动态载荷作用下的动力学响应; 低温(-56.5℃)低压(5.5 kPa)环境下传动机构运动平稳、可靠, 速度误差仅为1.3%。该防护装置已成功应用于某航空相机, 试验显示其有效克服了高空气动阻力及低温低压环境的影响, 可以作为其他高空分段拼装式光学窗口防护结构设计的参考。

Abstract

As the common altitude sub-assembled optical window for a aerial camera with larger view angle has a lower gradient, this paper proposes a protector for the altitude sub-assembled optical window. The mission requirement of the window and its working environments were analyzed, and the protector was designed. A transmission mechanism in the protector was designed and the transmission accuracy was analyzed. Finally, the vibration test and simulated altitude environment test were performed. The analysis and test results indicate that the first natural frequency of the protector is 111.9 Hz, which can ensure the dynamic responce of the protector under dynamic loading. Moreover, the movement of transmission mechanism is stable and reliable in low-temperature (-56.5℃) and low-pressure (5.5 kPa) environments, and the speed error is 1.3%. The protector has been successfully applied in an aerial camera.Experiments show it has effectively overcome the impact of altitude aerodynamic resistance and low-temperature, low-pressure environment, and can be used as a reference for protector designs of other sub-assembled optical windows.

参考文献

[1] 李延伟, 杨洪波, 程志峰, 等.航空遥感器光学窗口光机热一体化设计［J］.红外与激光工程, 2012, 41(8): 2102-2106.

LI Y W, YANG H B, CHENG ZH F, et al..Thermal/structural/optical integrated design for optical window in aerial remote sensor［J］.Infrared and Laser Engineering, 2012, 41(8): 2102-2106.(in Chinese)

[2] 罗传伟, 常伟军, 强华.机载光电设备红外窗口技术［J］.红外与激光工程, 2011, 40(4): 664-667.

LUO CH W, CHANG W J, QIANG H.Analysis of aerodynamic pressure loading for supersonic aircraft optical window ［J］.Infrared and Laser Engineering, 2011, 40(4): 664-667.(in Chinese)

[3] 黎明, 吴清文, 余飞, 等.基于热光学分析的光学窗口玻璃厚度的优化［J］.光学学报, 2010, 30(1): 210-213.

LI M, WU Q W, YU F, et al..Optimization on of optical window glass thickness based on the thermal optical analysis ［J］.Acta Optica Sinica, 2010, 30(1): 210-213.(in Chinese)

[4] 吴雪峰, 丁亚林, 吴清文.临近空间光学遥感器热设计［J］.光学精密工程, 2010, 18(5): 1159-1165.

WU X F, DING Y L, WU Q W.Thermal design for near space optical remote sensor ［J］.Opt.Precision Eng., 2010, 18(5): 1159-1165.(in Chinese)

[5] 钱翼稷.空气动力学［M］.北京: 北京航空航天大学出版社, 2009.

QIAN Y J.Aerodynamics ［M］.Beijing: Beijing University of Aeronautics and Astronautics Press, 2009.(in Chinese)

[6] 李延伟, 张洪文, 詹磊, 等.高空环境对航空遥感器光学窗口的影响［J］.激光与红外, 2012, 42(9): 1035-1039.

LI Y W, ZHANG H W, ZHAN L, et al..Influence of high altitude environment on optical window in aerial remote sensor ［J］.Laser &Infrared, 2012, 42(9): 1035-1039.(in Chinese)

[7] 刘波, 贾继强, 丁亚林, 等.基于圆柱凸轮的同轴变速传动机构［J］.光学精密工程, 2012, 20(8): 1765-1771.

LIU B, JIA J Q, DING Y L et al..A cylindrical cams based coaxial transmission mechanism［J］.Opt.Precision Eng., 2012, 20(8): 1765-1771.(in Chinese)

[8] 李延伟, 杨洪波.大口径平背形主镜轻量化结构优化设计方法［J］.系统仿真学报, 2008, 20(24): 6851-656.

LI Y W, YANG H B.Optimum design method for large-aperture lightweight primary mirror of flat rear surface［J］.Journal of System Simulation, 2008, 20(24): 6851-6856.

[9] 张雷, 金光.同轴轻型空间遥感器支撑桁架的设计与试验［J］.光学精密工程, 2010, 18(5): 1099-1104.

ZHANG L, JIN G.Design and test of supporting truss for light space remote sensor ［J］.Opt. Precision Eng., 2010, 18(5): 1099-1104.

[10] 张雷, 姚劲松, 贾学志, 等.同轴空间相机碳纤维复合材料桁架结构的研制［J］.光学精密工程, 2012, 20(9): 1967-1973.

ZHANG L, YAO J S, JIA X ZH, et al..Development of trusses made of carbon fiber composites for coaxial space remote sensors ［J］.Opt.Precision Eng., 2012, 20(9): 1967-1973.(in Chinese)

李延伟, 张洪文, 远国勤, 杨洪波. 高空分段拼装式光学窗口防护装置的设计[J]. 光学精密工程, 2014, 22(3): 664. Li Yan-wei, Zhang Hong-wen, YUAN Guo-qin, YANG Hong-bo. Design of protector for altitude sub-assembled optical window[J]. Optics and Precision Engineering, 2014, 22(3): 664.

高空分段拼装式光学窗口防护装置的设计

关于本站 Cookie 的使用提示

全站搜索

高空分段拼装式光学窗口防护装置的设计

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索