Matches in SemOpenAlex for { <https://semopenalex.org/work/W119560704> ?p ?o ?g. }
Showing items 1 to 83 of
83
with 100 items per page.
- W119560704 abstract "Work done on algorithms for the numerical solutions of optimal control problems and their application to the computation of optimal flight trajectories of aircraft and spacecraft is summarized. General considerations on calculus of variations, optimal control, numerical algorithms, and applications of these algorithms to real-world problems are presented. The sequential gradient-restoration algorithm (SGRA) is examined for the numerical solution of optimal control problems of the Bolza type. Both the primal formulation and the dual formulation are discussed. Aircraft trajectories, in particular, the application of the dual sequential gradient-restoration algorithm (DSGRA) to the determination of optimal flight trajectories in the presence of windshear are described. Both take-off trajectories and abort landing trajectories are discussed. Take-off trajectories are optimized by minimizing the peak deviation of the absolute path inclination from a reference value. Abort landing trajectories are optimized by minimizing the peak drop of altitude from a reference value. Abort landing trajectories are optimized by minimizing the peak drop of altitude from a reference value. The survival capability of an aircraft in a severe windshear is discussed, and the optimal trajectories are found to be superior to both constant pitch trajectories and maximum angle of attack trajectories. Spacecraft trajectories, in particular, the application of the primal sequential gradient-restoration algorithm (PSGRA) to the determination of optimal flight trajectories for aeroassisted orbital transfer are examined. Both the coplanar case and the noncoplanar case are discussed within the frame of three problems: minimization of the total characteristic velocity; minimization of the time integral of the square of the path inclination; and minimization of the peak heating rate. The solution of the second problem is called nearly-grazing solution, and its merits are pointed out as a useful engineering compromise between energy requirements and aerodynamics heating requirements." @default.
- W119560704 created "2016-06-24" @default.
- W119560704 creator A5073143366 @default.
- W119560704 date "1990-03-01" @default.
- W119560704 modified "2023-09-27" @default.
- W119560704 title "Optimal trajectories of aircraft and spacecraft" @default.
- W119560704 hasPublicationYear "1990" @default.
- W119560704 type Work @default.
- W119560704 sameAs 119560704 @default.
- W119560704 citedByCount "4" @default.
- W119560704 crossrefType "journal-article" @default.
- W119560704 hasAuthorship W119560704A5073143366 @default.
- W119560704 hasConcept C11413529 @default.
- W119560704 hasConcept C121332964 @default.
- W119560704 hasConcept C126255220 @default.
- W119560704 hasConcept C127413603 @default.
- W119560704 hasConcept C1276947 @default.
- W119560704 hasConcept C13393347 @default.
- W119560704 hasConcept C13662910 @default.
- W119560704 hasConcept C146978453 @default.
- W119560704 hasConcept C147764199 @default.
- W119560704 hasConcept C154945302 @default.
- W119560704 hasConcept C166957645 @default.
- W119560704 hasConcept C173246807 @default.
- W119560704 hasConcept C2775924081 @default.
- W119560704 hasConcept C2779860262 @default.
- W119560704 hasConcept C29829512 @default.
- W119560704 hasConcept C33923547 @default.
- W119560704 hasConcept C41008148 @default.
- W119560704 hasConcept C45374587 @default.
- W119560704 hasConcept C47446073 @default.
- W119560704 hasConcept C527307 @default.
- W119560704 hasConcept C91575142 @default.
- W119560704 hasConcept C95457728 @default.
- W119560704 hasConceptScore W119560704C11413529 @default.
- W119560704 hasConceptScore W119560704C121332964 @default.
- W119560704 hasConceptScore W119560704C126255220 @default.
- W119560704 hasConceptScore W119560704C127413603 @default.
- W119560704 hasConceptScore W119560704C1276947 @default.
- W119560704 hasConceptScore W119560704C13393347 @default.
- W119560704 hasConceptScore W119560704C13662910 @default.
- W119560704 hasConceptScore W119560704C146978453 @default.
- W119560704 hasConceptScore W119560704C147764199 @default.
- W119560704 hasConceptScore W119560704C154945302 @default.
- W119560704 hasConceptScore W119560704C166957645 @default.
- W119560704 hasConceptScore W119560704C173246807 @default.
- W119560704 hasConceptScore W119560704C2775924081 @default.
- W119560704 hasConceptScore W119560704C2779860262 @default.
- W119560704 hasConceptScore W119560704C29829512 @default.
- W119560704 hasConceptScore W119560704C33923547 @default.
- W119560704 hasConceptScore W119560704C41008148 @default.
- W119560704 hasConceptScore W119560704C45374587 @default.
- W119560704 hasConceptScore W119560704C47446073 @default.
- W119560704 hasConceptScore W119560704C527307 @default.
- W119560704 hasConceptScore W119560704C91575142 @default.
- W119560704 hasConceptScore W119560704C95457728 @default.
- W119560704 hasLocation W1195607041 @default.
- W119560704 hasOpenAccess W119560704 @default.
- W119560704 hasPrimaryLocation W1195607041 @default.
- W119560704 hasRelatedWork W1489668392 @default.
- W119560704 hasRelatedWork W1884352875 @default.
- W119560704 hasRelatedWork W189408577 @default.
- W119560704 hasRelatedWork W2000809442 @default.
- W119560704 hasRelatedWork W2006073854 @default.
- W119560704 hasRelatedWork W2009797789 @default.
- W119560704 hasRelatedWork W2016780683 @default.
- W119560704 hasRelatedWork W2030981316 @default.
- W119560704 hasRelatedWork W2051158743 @default.
- W119560704 hasRelatedWork W2053759844 @default.
- W119560704 hasRelatedWork W2057283843 @default.
- W119560704 hasRelatedWork W2068508699 @default.
- W119560704 hasRelatedWork W2071120094 @default.
- W119560704 hasRelatedWork W2076296764 @default.
- W119560704 hasRelatedWork W2094396273 @default.
- W119560704 hasRelatedWork W251176872 @default.
- W119560704 hasRelatedWork W3139922881 @default.
- W119560704 hasRelatedWork W4665907 @default.
- W119560704 hasRelatedWork W751925772 @default.
- W119560704 hasRelatedWork W1777299564 @default.
- W119560704 isParatext "false" @default.
- W119560704 isRetracted "false" @default.
- W119560704 magId "119560704" @default.
- W119560704 workType "article" @default.