Results 1 to 10 of about 87,747 (212)

Variation in aerodynamic coefficients with altitude

Results in Physics, 2017
Precise aerodynamics performance prediction plays key role for a flying vehicle to get its mission completed within desired accuracy. Aerodynamic coefficients for same Mach number can be different at different altitude due to difference in Reynolds ...
Faiza Shahid, Mukkarum Hussain, Mirza Mehmood Baig, Ihtram ul Haq   +3 more
doaj   +2 more sources

In-orbit aerodynamic coefficient measurements using SOAR (Satellite for Orbital Aerodynamics Research) [PDF]

Acta Astronautica, 2021
The Satellite for Orbital Aerodynamics Research (SOAR) is a CubeSat mission, due to be launched in 2021, to investigate the interaction between different materials and the atmospheric flow regime in very low Earth orbits (VLEO). Improving knowledge of the gas-surface interactions at these altitudes and identification of novel materials that can ...
Crisp, N.H., Roberts, P.C.E., Livadiotti, S., Macario Rojas, A., Oiko, V.T.A., Edmondson, S., Haigh, S.J., Holmes, B.E.A., Sinpetru, L.A., Smith, K.L., Becedas, J., Domínguez, R.M., Sulliotti-Linner, V., Christensen, S., Nielsen, J., Bisgaard, M., Chan, Y.-A., Fasoulas, S., Herdrich, G.H., Romano, F., Traub, C., García-Almiñana, D., Rodríguez-Donaire, S., Sureda, M., Kataria, D., Belkouchi, B., Conte, A., Seminari, S., Villain, R.   +28 more
openaire   +7 more sources

Identification and Validation of the Cessna Citation X Longitudinal Aerodynamic Coefficients in Stall Conditions using Multi-Layer Perceptrons and Recurrent Neural Networks [PDF]

INCAS Bulletin, 2022
The increased number of accidents in general aviation due to loss of aircraft control has necessitated the development of accurate aerodynamic airplane models.
Yvan TONDJI, Mouhamadou WADE, Georges GHAZI, Ruxandra Mihaela BOTEZ   +3 more
doaj   +1 more source

Identification of longitudinal aerodynamic characteristics of a strake-wing micro aerial vehicle by using artificial neural networks [PDF]

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2021
Appropriate modeling of unsteady aerodynamic characteristics is required for the study of aircraft dynamics and stability analysis, especially at higher angles of attack.
Dariusz Rykaczewski, Mirosław Nowakowski, Krzysztof Sibilski, Wiesław Wróblewski, Michał Garbowski   +4 more
doaj   +1 more source

Aerodynamic Characteristics Analysis of Iced Conductor Based on BP Neural Network

Buildings, 2022
Major disasters and losses would be caused by the galloping of transmission lines. The basis for studying the galloping mechanism of transmission lines is to analyze the aerodynamic characteristics of iced conductors.
Junhao Liang, Mengqi Cai, Qingyuan Wang, Linshu Zhou, Jun Liu, Guangyun Min, Hanjie Huang   +6 more
doaj   +1 more source

Three-Dimensional Unsteady Aerodynamic Analysis of a Rigid-Framed Delta Kite Applied to Airborne Wind Energy

Energies, 2021
The validity of using a low-computational-cost model for the aerodynamic characterization of Airborne Wind Energy Systems was studied by benchmarking a three-dimensional Unsteady Panel Method (UnPaM) with experimental data from a flight test campaign of ...
Iván Castro-Fernández, Ricardo Borobia-Moreno, Rauno Cavallaro, Gonzalo Sánchez-Arriaga   +3 more
doaj   +1 more source

Unsteady Aerodynamic Characteristics of Antenna Rotating in Different Elevation Angles

International Journal of Antennas and Propagation, 2021
The aerodynamic characteristics of radar antennas should be considered in computing their wind resistance and designing pedestal servo systems. In this paper, the aerodynamic characteristics of a flat plate antenna with azimuthal rotation are explored ...
Yanqi Zhang, Zhaoming Zhang
doaj   +1 more source

Airfoil Aerodynamics in Proximity to Wavy Ground for a Wide Range of Angles of Attack

Applied Sciences, 2020
Wing-in-ground craft often encounter waves when flying over the sea surface, and the ground effect is more complicated than that of flat ground. Therefore, the aerodynamic characteristics of the NACA 4412 airfoil in proximity to wavy ground for a wide ...
Haode Hu, Dongli Ma
doaj   +1 more source

The influence of aerodynamic coefficients on the elements of classic projectile paths

Vojnotehnički Glasnik, 2011
The article deals with the results of the research on the influence of aerodynamic coefficient values on the trajectory elements and the stability parameters of classic axisymmetric projectiles.
Damir D. Jerković, Dušan B. Regodić
doaj   +1 more source

Experimental Investigation of Aerodynamic Characteristics of NACA 23015 under different angles of attack and Comparison with Available Package [PDF]

Engineering and Technology Journal, 2009
A Model of wing section of type (NACA 23015) had been built to be investigated andstudy the aerodynamic characteristics in a subsonic wind tunnel at different angles ofattack in order to calculate the aerodynamic coefficients such as lift, drag, moment ...
Mohammed Ahmed Rasheed, Ahmed Adnan AL-Qaisy   +1 more
doaj   +1 more source