Eric Greenwood,Ben W Sim
Eric Greenwood
In order to develop recommendations for procedures for helicopter source noise characterization, the effects of crosswinds on main rotor harmonic noise radiation are assessed using a model of the Bell 430 helicopter. Crosswinds are found to...
Genetic Algorithm-Based Model Order Reduction of Aeroservoelastic Systems with Consistent States [0.03%]
基于遗传算法的一致状态有源伺服弹性系统的模型降阶方法
Jin Zhu,Yi Wang,Kapil Pant et al.
Jin Zhu et al.
This paper presents a model order reduction framework to construct linear parameter-varying reduced-order models of flexible aircraft for aeroservoelasticity analysis and control synthesis in broad two-dimensional flight parameter space. Ge...
Optimum Wing Shape Determination of Highly Flexible Morphing Aircraft for Improved Flight Performance [0.03%]
变体飞行器机翼形状优化以提升飞行性能研究
Weihua Su,Sean Shan-Min Swei,Guoming G Zhu
Weihua Su
In this paper, optimum wing bending and torsion deformations are explored for a mission adaptive, highly flexible morphing aircraft. The complete highly flexible aircraft is modeled using a strain-based geometrically nonlinear beam formulat...
Top-of-Climb Matching Method for Reducing Aircraft Trajectory Prediction Errors [0.03%]
爬升顶点匹配方法降低航迹预测误差
David P Thipphavong
David P Thipphavong
The inaccuracies of the aircraft performance models utilized by trajectory predictors with regard to takeoff weight, thrust, climb profile, and other parameters result in altitude errors during the climb phase that often exceed the vertical...
Steven J Eckels,Byron Jones,Garrett Mann et al.
Steven J Eckels et al.
The current research examines the possibility of using recirculation filters from aircraft to document the nature of air-quality incidents on aircraft. These filters are highly effective at collecting solid and liquid particulates. Identifi...
Modeling human pilot cue utilization with applications to simulator fidelity assessment [0.03%]
用于仿真器逼真度评估的人机循环利用模型研究
Y Zeyada,R A Hess
Y Zeyada
An analytical investigation to model the manner in which pilots perceive and utilize visual, proprioceptive, and vestibular cues in a ground-based flight simulator was undertaken. Data from a NASA Ames Research Center vertical motion simula...
J A Schroeder,W W Chung,R A Hess
J A Schroeder
An experiment examined how visual scene and platform motion variations affected a pilot's ability to perform altitude changes. Pilots controlled a helicopter model in the vertical axis and moved between two points 32-ft apart in a specified...