Experimental Study of Dynamic Stability for a Entry Capsule in Supersonic Flow

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Sargolzaie Mohsen; Fazeli Hamid; Soltani Mohammad Reza

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Journal: Journal of Space Science and Technology Year:2022 | Volume: | Issue: Page(s): 71-80

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Information Journal Paper

Title

Experimental Study of Dynamic Stability for a Entry Capsule in Supersonic Flow

Author(s)

Sargolzaie Mohsen | Fazeli Hamid | Soltani Mohammad Reza | Issue Writer Certificate

Keywords

entry capsuleQ4

Supersonic flowQ4

dynamic stabilityQ4

experimental aerodynamicQ4

Unsteady aerodynamicQ4

Abstract

Due to the lack of existence of control surfaces in entry capsules, the subject of static and dynamic stability is always important. In this paper, these coefficients are investigated experimentally for the case of forced oscillation at Supersonic flow. In this experimental study, the effects of freestream Mach number, mean attack angle and pitch frequency on dynamic stability coefficients were evaluated. According to the results, in Mach 1.8, the geometry starts to be dynamically unstable. One approach to overcome this problem is to change the average attack of angle of the model. This change in the mean attack of angle, similar to the results presented for the five-degree mean angle, will lead to dynamic stability.

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