Computation of Damping Derivative of an Ogive at High-Speed Flow


Aysha Shabana*†, Asha Crasta‡, Ridwan‡†, Sher Afghan Khan‡†


† Mathematics Dept., M.I.T.E, Moodabidri and Assistant Professor, SCEM, Mangaluru, Karnataka, India
‡ Mathematics Department, M.I.T.E, Moodabidri, Karnataka, India
‡† Department of Mechanical Engineering, Faculty of Engineering, IIUM, Gombak Campus, Kuala Lumpur, Malaysia.

Corresponding Author Email: [email protected]

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This paper aims to derive an expression for the damping derivative of an ogive in pitch. The Ogive shape is achieved by superposing an arch on the cone. The inertia levels considered are M = 5, 7, 9, 10, and 15. The contemporary theory applies to the connected shock case & the Mach M2 behind the shock M2 ≥ 2.5. Damping derivatives are examined for ogive for γ = 1.4 at various semi angles for differing pivot positions and Mach numbers and λ = ± 5, 10. Results indicate a continued decrease in stability derivatives. However, the damping derivatives turn independent of Mach M for Mach more than ten— with a surge in the cone angle, a continued rise in the damping derivatives attained.