Mathematics
Scientific paper
Sep 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985kosis..23..684v&link_type=abstract
(Kosmicheskie Issledovaniia, vol. 23, Sept.-Oct. 1985, p. 684-690) Cosmic Research (ISSN 0010-9525), vol. 23, no. 5, March 1986,
Mathematics
Atmospheric Entry, Spacecraft Control, Spacecraft Reentry, Spacecraft Trajectories, Trajectory Control, Mathematical Models, Return To Earth Space Flight
Scientific paper
An explicit entry control law (k = k/h, I, V, theta, t/) is synthesized to achieve a given landing range without measurement of atmospheric perturbations. Numerical modeling, with results given, shows the effectiveness of the entry control algorithm. For all the trajectory perturbations considered the final entry range I(T) practically coincides with the entry range in the reference trajectory. The law of variation of the effective lift-to-drag ratio k(t) along the perturbed trajectories is the important item. The maximum value of k increases with reduced final height H, but the technically allowable value does not increase in the height range considered.
Kozminykh V. A.
Velichenko V. V.
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