Results 81 to 90 of about 69,093 (209)

Application of an optimization method to high performance propeller designs [PDF]

The application of an optimization method to determine the propeller blade twist distribution which maximizes propeller efficiency is presented. The optimization employs a previously developed method which has been improved to include the effects of ...
Li, K. C., Stefko, G. L.
core   +1 more source

Optimization of projectile aerodynamic parameters based on hybrid genetic algorithm

Journal of Measurement Science and Instrumentation, 2015
Aerodynamic parameters are important factors that affect projectile flight movement.To obtain accurate aerodynamic parameters,a hybrid genetic algorithm is proposed to identify and optimize the aerodynamic parameters of projectile.By combining the ...
LIU Lin, TIAN Xiao-li, GAO Xiao-dong, GAN Tao-yuan, SHE Xin-ji   +4 more
doaj  

Transonic transport study: Structures and aerodynamics [PDF]

The structural and aerodynamic aspects of a general study of advanced transonic transports are presented. Aircraft designed to cruise at Mach numbers of 0.90, 0.98, and 1.15 were comparatively analyzed.
Ardema, M. D., Williams, L. J.
core   +1 more source

Study of the development and verification of an integrated code for UAV design [PDF]

, 2015
L'objectiu d'aquest estudi és desenvolupar una eina de disseny d'aeronaus utilitzant algoritmes d'optimització per a facilitar el procés. Es pretén incorporar el codi d'estudi i simulació de les actuacions d'un UAV desenvolupat per l'equip Trencalòs Team
Armengol Garcia, Lluís
core  

Rapid Aerodynamic Shape Optimization With Payload Size Constraints for Hypersonic Vehicle

IEEE Access, 2019
Nowadays, aerodynamic shape optimization of the hypersonic vehicle is mostly optimized for local details such as the wing. In the overall shape optimization, the conceptual design of the vehicle is more common, in which the shape is described in fewer ...
Wuyu Peng, Zhiwei Feng, Tao Yang
doaj   +1 more source

Transonic Buffet Suppression by Airfoil Optimization

Aerospace
The main buffet suppression techniques of aircrafts include active and passive flow control, aiming to reduce the impact of the fluctuating loads on the airfoil. These techniques are remedies after the airfoil design. The buffet suppression is not always
Yiming Gong, Chuanqiang Gao, Weiwei Zhang   +2 more
doaj   +1 more source

Aerodynamic optimization design of blended winglets for HALE UAVs

Kongqi donglixue xuebao
To address the engineering requirements for improving the aerodynamic efficiency of medium to high altitude long-endurance UAVs, this paper takes a high-aspect-ratio UAV as the research object and conducts aerodynamic optimization design of blended ...
Jiaxiang ZHAO, Xiaoxiang BAO, Zonghui WANG, Yang LUO   +3 more
doaj   +1 more source

Integrated aerodynamic/dynamic optimization of helicopter rotor blades [PDF]

An integrated aerodynamic/dynamic optimization procedure is used to minimize blade weight and 4 per rev vertical hub shear for a rotor blade in forward flight.
Chattopadhyay, Aditi, Riley, Michael F., Walsh, Joanne L.   +2 more
core   +1 more source

Data-driven aerodynamic shape optimization of rotor airfoils based on deep learning

Advances in Aerodynamics
As the fundamental component of rotor blades, the airfoil dominates the aerodynamic performance of helicopter rotors. The aerodynamic shape optimization of rotor airfoils is thus an effective means of improving their aerodynamic performance.
Jiaqi Liu, Rongqian Chen, Jinhua Lou, Yancheng You   +3 more
doaj   +1 more source

Span morphing using the compliant spar

, 2014
This paper develops and models the Compliant Spar concept that allows the wing span to be varied to provide roll control and enhance the operational performance for a medium altitude long endurance (MALE) UAV.
Ajaj, R.M., DiazDelaO, F.A., Friswell, M.I., Saavedra Flores, E.I.   +3 more
core   +1 more source