Singular extremals are derived by means of Legendre-Clebsch necessary condition applied in transformed system of state and control variables; these are obtained as circular orbits along which thrust is zero and intermediate thrust arcs are found in Lawden's analysis; since solutions satisfy only weak form of Legendre-Clebsch condition question of their minimality remains unanswered.
Singular extremals in Lawden's problem of optimal rocket flight
AIAA J
AIAA Journal ; 1 , n 7
1963
3 pages
Aufsatz (Zeitschrift)
Englisch
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