Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979kosis..17..246a&link_type=abstract
Kosmicheskie Issledovaniia, vol. 17, Mar.-Apr. 1979, p. 246-255. In Russian.
Astronomy and Astrophysics
Astronomy
2
Ablation, Body Kinematics, Earth Atmosphere, Mass Transfer, Reentry Trajectories, Three Dimensional Motion, Astrodynamics, Celestial Mechanics, Differential Equations, Ellipsoids, Heat Flux, Heat Transfer, Hypersonic Flow, Kinematic Equations
Scientific paper
The problem of determining mass ablation from a three-dimensional body that changes its shape while moving along a trajectory in earth's atmosphere is examined. Heat fluxes that depend on the angle of inclination of the surface with respect to the velocity vector of the on-coming gas flow are considered. Numerical results are presented for several bodies of initially ellipsoidal shape with different semiaxis ratios, which enter earth's atmosphere with a velocity of 20 km/s and initial entry angles of 9 to 90 deg. The radiative heat fluxes incident on the body are computed by using approximate formulas. It is shown that the change in mass, the velocity, and the ballistic factor of the body are functions of the various governing parameters.
Apshtein E. Z.
Piliugin N. N.
Tirskii G. A.
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