Spatial supersonic motion of a body through a large-scale inhomogeneity in a stratified atmosphere

V. U. Nabiyev, S. V. Utyuzhnikov

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Abstract

The free spatial motion of a blunted body of revolution through a large cloud of heated gas (a thermal) floating in a stratified atmosphere is investigated. Extended composite bodies of the sphere-cone type are considered, the free supersonic motion of which is usually associated with small angles of attack. To determine the trajectory of the body and its orientation in space, a highly effective numerical method is proposed which is an extension of the spatial case of a previously described method [1] for the two-dimensional formulation and which is based on the simultaneous solution of the problems of the flow around a body and its motion. Using this method the effect of a floating thermal on the trajectory and orientation of the body in space and the stability of the flight is investigated in the three-dimensional formulation. The change in the trajectory of the body and its orientation in space as a function of the position of the centre of mass is considered. It is shown that the presence of a thermal may lead to a considerable change in the trajectory of the body and to a loss in flight stability.

Original languageEnglish
Pages (from-to)607-613
Number of pages7
JournalJournal of Applied Mathematics and Mechanics
Volume60
Issue number4
DOIs
Publication statusPublished - 1996
Externally publishedYes

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