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The computation of stiffness derivative for an ogive in the hypersonic flow

Shabana, Ayesha and Renita, sharon Monis and Crasta, Asha and Khan, Sher Afghan (2018) The computation of stiffness derivative for an ogive in the hypersonic flow. International Journal of Mechanical and Production Engineering Research and Development (IJMPERD), 8 (5). pp. 173-184. ISSN 2249-6890 E-ISSN 2249-8001

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Expression for Stiffness derivative for an Ogive is derived with the suppositions of the arc on the nose of the cone from the air is being considered as perfect gas and the viscosity being neglected, the motion is quasi-steady, and the nose deflection angle of the Ogive θ is in such a way that the M2 after the shock is > 2.5. It is seen that due to the increment in angle θ, the stiffness derivative increases linearly due the progressive increase in the plan form area of the nose shape. The results indicate that there is a 38 percent increase in the stability derivative when the flow deflection θ was enhanced in the range of 5 to 10 degrees. With the further enhancement in the flow deflection angle θ from ten degrees and above, does not yield substantial increase in the stability derivative. Due to this change in the surface pressure distribution will lead to shift the location of centre of pressure, from the hinged position h = 0.5 to 0.8. The centre of pressure also has shifted towards the downstream, which lies in the range from h = 0.72 to 0.85.

Item Type: Article (Journal)
Additional Information: 7395/66074
Uncontrolled Keywords: Stability derivative, Surface pressure, Ogive, Stiffness derivative & Pitch angle
Subjects: Q Science > QA Mathematics > QA297 Numerical Analysis
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User: Prof. Dr. Sher Afghan Khan
Date Deposited: 01 Oct 2018 11:20
Last Modified: 12 Oct 2018 17:19
URI: http://irep.iium.edu.my/id/eprint/66074

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