AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF COMPRESSIBILITY AND REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC BEHAVIOR OF A FIGHTER MODEL

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SOLTANI M.R.; DAVARI A.R.

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Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2005 | Volume:21 | Issue:31 Page(s): 39-46

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Title

AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF COMPRESSIBILITY AND REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC BEHAVIOR OF A FIGHTER MODEL

Author(s)

SOLTANI M.R. | DAVARI A.R. | Issue Writer Certificate

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Abstract

A model of a fighter aircraft known as the Standard Dynamics Model, SDM, has been tested to investigate its aerodynamic behavior during oscillatory maneuvers. The experiments were conducted in the trisonic wind tunnel of Imam Hossein University, Tehran, at Mach numbers of 0.4, 0.6 and 1.5, corresponding to the Reynolds numbers of 0.84, 1.26 and 3.15 v 107 per meters, respectively. The oscillation frequencies were 1.25, 2.77 and 6.00 Hz with the mean angles of attack ranging from 0 to 14 degrees. The static and dynamic force and moment, as well as the dynamic derivatives, were measured. Further, the unsteady aerodynamic behavior of the SDM in both pitching and plunging motions has been studied. A comparison has also been made between the dynamic derivatives measured in the present experiments and those obtained in several research centers all over the world on the same model. The data compares well within the angles of attack tested in this tunnel, which indicates the accuracy of the experimental setup, data acquisition and reduction, as well as all data corrections made in the present experiments.

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APA: Copy

SOLTANI, M.R., & DAVARI, A.R.. (2005). AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF COMPRESSIBILITY AND REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC BEHAVIOR OF A FIGHTER MODEL. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 21(31), 39-46. SID. https://sid.ir/paper/128268/en

Vancouver: Copy

SOLTANI M.R., DAVARI A.R.. AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF COMPRESSIBILITY AND REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC BEHAVIOR OF A FIGHTER MODEL. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2005;21(31):39-46. Available from: https://sid.ir/paper/128268/en

IEEE: Copy

M.R. SOLTANI, and A.R. DAVARI, “AN EXPERIMENTAL INVESTIGATION OF THE EFFECTS OF COMPRESSIBILITY AND REDUCED FREQUENCY ON THE UNSTEADY AERODYNAMIC BEHAVIOR OF A FIGHTER MODEL,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 21, no. 31, pp. 39–46, 2005, [Online]. Available: https://sid.ir/paper/128268/en

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