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AN AUTOMATIC MOSAICKING METHOD FOR BUILDING FACADE TEXTURE MAPPING
Terrestrial imaging Digital camera Strip model
2015/9/28
This paper presents an automatic mosaicking method for generating building facade texture from a sequence of color close-range
digital camera images. The constraint of straight line bundle and the c...
无人机远航飞行轨迹优化研究
能量状态法 轨迹优化 飞行性能 SQP算法
2016/7/25
根据能量状态法对无人机给定燃油质量下的远航飞行性能进行了优化研究，对爬升和巡航段进行了远航轨迹优化分析，采用非线性规划理论对远航问题进行分析并利用SQP算法进行求解。通过分析某型无人机安全升限与质量的关系，提出了一种更适用于此型无人机的安全爬升优化方案。考虑此型无人机质量在巡航过程中变化较大，遂根据巡航质量分段进行速度优化，结果表明，巡航速度优化后的飞行距离大大增加。该研究方法简单，效果明显，实用...
高超声速滑翔飞行器变轨段自适应跟踪制导方法
高超声速滑翔飞行器 变轨段 权值矩阵修正 自适应跟踪制导
2016/11/7
针对高超声速滑翔飞行器变轨段大偏差条件下的标准轨迹跟踪问题，提出一种基于权值矩阵自适应修正的变轨段跟踪制导方法。分析了变轨段主要控制方式和标准轨迹特性；将简化的纵向运动方程在标准轨迹附近线性化；采用将误差项引进线性二次型性能指标加权矩阵的方式，设计了改进的权值自适应修正跟踪制导方法。CAV-H飞行器仿真分析表明，该方法能够实现高超声速滑翔飞行器变轨段高精度自适应跟踪制导，对初始及过程偏差具有良好的...
Aerodynamic Shape Optimization of Transonic and Supersonic Aircraft configurations
Aerodynamic Shape Optimization Transonic Supersonic Aircraft gurations
2015/7/2
With the availability of high performance computing platforms and robust numerical methods to simulate fluid flows, it is possible to shift attention to automated design procedures which u...
G-Force:The Design Of An Unlimited Class Reno Racer
G-Force The Design Unlimited Class Reno Racer
2015/7/2
In May 1999, Renaissance Research contracted Star Aerospace LLC to design an Unlimited Class racing aircraft. At present, modified piston-prop fighters designed before and during WWII dominate this fo...
Gas-kinetic schemes developed from the BGK model have been successfully applied to 1-D and 2-D flows [1,2]. One of the advantages of the gas-kinetic approach over more conventional methods is realized...
Fully-Implicit Time-Marching Aeroelastic Solutions
Fully-Implicit Time-Marching Aeroelastic Solutions
2015/7/1
A new fully-implicit approach for computing transonic aeroelastic solutions is presented. The unsteady Euler equations are coupled with a typical section swept wing model and integrated forward in tim...
Flying Curved Approaches and Missed Approaches:3-D Display Trials Onboard a Light Aircraft
Flying Curved Approaches 3-D Display Trials Onboard Light Aircraft
2015/6/29
Cockpit displays that enhance situational awareness in light aircraft are becoming feasible through the rapid development of enabling technologies including differential GPS, inexpensive computers, an...
Alaskan Flight Trials of a Synthetic Vision System for Instrument Landings of a Piston Twin Aircraft
Alaskan Flight Trials Synthetic Vision System Instrument Landings Piston Twin Aircraft
2015/6/29
Stanford University has developed a low-cost prototype synthetic vision system and flight tested it onboard general aviation aircraft. The display aids pilots by providing an “out the window” view, ma...
为解决大地景仿真时显示逼真度与画面流畅度相互制约的问题，对基于地形生成系统 (creator terrain system，CTS)的大地景仿真进行参数优化设计。结合某型飞机飞行仿真系统研制实例，分析地形纹理和地形模型的生成原理，给出其参数设置，重点研究重要参数对纹理和地形生成的影响。仿真结果表明，该设计能有效解决地景逼真度与流畅度互相制约的难点。
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为提高飞行员在海天环境下的心理生理耐受性和适应能力，设计一种基于模拟器的飞行员海上飞行心理训练系统。该系统采用基于通用接口的可换机型抖振座舱，满足了不同机型飞行员的训练需求，将生理心理检测系统引入飞行模拟训练过程中，通过模拟各种海天环境的视觉变化、舰船和飞机的噪声、船体摇摆，分析影响飞行员飞行生理心理变化的指标，进而针对性地进行心理训练和干预。分析结果表明：该系统为针对性的心理干预和预防措施提供理...
低冲击弹射式发射箱前盖分离特性
发射箱盖 分离特性 响应面法(RSM) 虚拟样机
2016/5/6
针对火箭、导弹储运发射箱前盖快速开启、可靠分离的设计需求，提出一种利用弹簧储能的低冲击弹射式发射箱前盖方案。在此基础上，结合设计方案各部件在分离过程中的受力特性，建立前盖分离和抛落的理论模型，对箱盖分离轨迹进行计算分析。为优化设计参数，利用实验设计方法(DOE)和响应面法(RSM)对影响前盖抛落距离的储能弹簧刚度、有效作用距离以及活动冲击部件的斜板倾角等进行优化分析，获得满足可靠分离判据的优化结果...
飞机着舰轨迹稳定性及飞行员操纵策略研究
着舰 轨迹稳定性 速度稳定性 操纵策略
2016/4/6
针对舰载机着舰时操纵性下降等问题，通过对飞机受力分析及动态仿真，得到着舰条件下保持飞机轨迹稳定性的方法，并对飞行员控制飞机着舰的操纵策略进行了探索。以F/A-18舰载机为例，结合小扰动方程，分析了飞机在下滑时仅操纵升降舵无法跟踪航迹的原因，分析飞机各参数对升降舵及油门杆的跟踪响应情况，给出了着舰时飞行员消除高度误差操纵策略，并运用Matlab/Simink软件仿真了飞机在低动压下的纵向响应特性。仿...