Measurements of dynamic stability derivatives using direct forced oscillation technique

Date

2001-08-30

Author

Alemdaroglu, N
Iyigun, I
Altun, M
Quagliotti, F
Guglieri, G

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

223
views

0
downloads

The subject of the experimental investigation presented in this paper is to measure the dynamic stability derivatives of a generic combat aircraft model in the Ankara Wind Tunnel by using the direct forced oscillation technique. The model, used for the tests is the AGARD, Standard Dynamic Model (SDM). The aerodynamic loads acting on the model are measured with a five component internal strain gauge balance placed inside the oscillating model. The paper presents the experimental set-up used to create the oscillatory motion in pitch for the model and the related motion control and the data acquisition units to measure the dynamic loads, and discussed the results of the measurements.

Subject Keywords

Aircraft testing, Wind tunnels, Motion control, Aerospace simulation, Dynamic testing, Damping, Mechanical stability, Aircraft control, Military aircraft

URI

https://hdl.handle.net/11511/67895

DOI

https://doi.org/10.1109/iciasf.2001.960261

Collections

Department of Aerospace Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

Investigation of relationship between aggregate shape parameters and concrete strength using imaging techniques Özen, Murat; Güler, Murat; Department of Civil Engineering (2007) In this study, relationships between aggregate shape parameters and compressive strength of concrete were investigated using digital image processing and analysis methods. The study was conducted based on three mix design parameters, gradation type, aggregate type and maximum aggregate size, at two levels. A total of 40 cubic concrete specimens were prepared at a constant water-cement ratio. After the compressive strength tests were performed, each specimen was cut into 4 equal pieces in order to obtain the...
Predicting the shear strength of reinforced concrete beams using artificial neural networks Mansour, MY; Dicleli, Murat; Lee, JY; Zhang, J (Elsevier BV, 2004-05-01) The application of artificial neural networks (ANNs) to predict the ultimate shear strengths of reinforced concrete (RC) beams with transverse reinforcements is investigated in this paper. An ANN model is built, trained and tested using the available test data of 176 RC beams collected from the technical literature. The data used in the ANN model are arranged in a format of nine input parameters that cover the cylinder concrete compressive strength, yield strength of the longitudinal and transverse reinforc...
Data-Driven Model Discovery and Control of Lateral-Directional Fighter Aircraft Dynamics Öznurlu, Can; Uğur, Ömür; Çimen, Tayfun; Department of Scientific Computing (2022-8-26) The focus of this thesis is to control the lateral-directional motion of the fighter aircraft by using integral action based Model Predictive Control (MPC) where the model is obtained by data-driven model discovery method. Dynamic Mode Decomposition with Control (DMDc) is used as a model discovery technique based only on measurement data with no modeling assumptions. The model created using this technique is used for MPC and tested against noisy conditions. In addition, performance comparison of MPC with Cl...
Calculation of flutter and dynamic behavior of advanced composite swept wings with tapered cross section in unsteady incompressible flow Farsadi, T.; Hasbestan, J. J. (Informa UK Limited, 2019-02-16) In this study, the aeroelastic stability and response of a swept composite wing in subsonic incompressible flow are investigated. The wing is modeled as an anisotropic tapered thin-walled beam with the circumferentially asymmetric stiffness structural configuration to establish proper coupling between bending and torsion. The structural model considers a number of nonclassical effects, such as transverse shear, material anisotropy, warping inhibition, nonuniform torsion, rotary inertia and three-dimensional...
Measurements of the differential jet cross section as a function of the jet mass in dijet events from proton -proton collisions at=13 TeV Sirunyan, A. M.; et. al. (Springer Science and Business Media LLC, 2018-11-01) Measurements of the differential jet cross section are presented as a function of the jet mass in dijet events, in bins of jet transverse momentum, with and without a jet grooming algorithm. The data have been recorded by the CMS Collaboration in proton-proton collisions at the LHC at a center-of-mass energy of 13 TeV and correspond to an integrated luminosity of 2.3 fb(-1). The absolute cross sections show slightly different jet transverse momentum spectra in data and Monte Carlo event generators for the s...

Citation Formats

N. Alemdaroglu, I. Iyigun, M. Altun, F. Quagliotti, and G. Guglieri, “Measurements of dynamic stability derivatives using direct forced oscillation technique,” 2001, p. 275, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67895.