弹射过程座舱盖抛放轨迹的预测  

Prediction of the aircraft canopy trajectory

作　　者：杨春信[1] 韩海鹰[1] 龚洁[1] 杨新明[2] 徐晓东[2] 

机构地区：[1]北京航空航天大学505教研室,北京100083 [2]空军第一研究所,北京100076

出　　处：《空气动力学学报》2005年第1期35-39,共5页Acta Aerodynamica Sinica

基　　金：航空科学基金资助项目 (0 1E51 0 50 )

摘　　要：通过分析座舱盖在各个不同抛放阶段的受力关系 ,并着重考虑了抛放过程中气动系数的修正和铆钉剪切的影响 ,最终建立了座舱盖抛放轨迹的预测模型。该模型可广泛用于预测不同型号座舱盖在各种飞行状态下的抛放轨迹。算例表明计算结果与实验数据一致 。For meeting the need of jettison system design, the prediction model of the canopy trajectory is developed through analyzing the force of canopy at different steps of jettison. The aerodynamic coefficients used in the model is acquired through the transient correction of steady aerodynamic coefficients. Furthermore, the influence of rivet trimming on trajectory has been considered to improve the accuracy of model. The model can be used in the trajectory prediction of different aircraft canopies at variable conditions. Finally, with this model, some simulations are carried out, and the results demonstrate its feasibility.

关 键 词：座舱盖 飞行状态 铆钉 型号 轨迹 实验数据 动系 证明 系数 算例 

分 类 号：V244.211[航空宇航科学与技术—飞行器设计] V223.6