Matches in SemOpenAlex for { <https://semopenalex.org/work/W4288104103> ?p ?o ?g. }
Showing items 1 to 53 of
53
with 100 items per page.
- W4288104103 abstract "It is wellknown that helicopters descending fast may enter the so called VRS, a region in the velocity space where the blade's lift differs significantly from regular regions. This may lead to instability and therefore this region is avoided, typically by increasing the horizontal speed. This paper researches this phenomenon in the context of small scale quadcopters. The region corresponding to the VRS is identified by combining first principles modeling and wind tunnel experiments. Moreover, we propose that the so called WBS or autorotation region should also be avoided for quadcopters, which is not necessarily the case for helicopters. A model is proposed for the velocity constraints that the quadcopter must meet to avoid these regions. Then, the problem of designing optimal time descend trajectories that avoid the VRS and WBS regions is tackled. Finally, the optimal trajectories are implemented on a quadcopter. The flight tests show that by following the designed trajectories, the quadcopter is able to descend considerably faster than purely vertical trajectories that also avoid the VRS and WBS." @default.
- W4288104103 created "2022-07-28" @default.
- W4288104103 creator A5013274345 @default.
- W4288104103 creator A5024148740 @default.
- W4288104103 creator A5033705417 @default.
- W4288104103 creator A5053813454 @default.
- W4288104103 date "2019-09-19" @default.
- W4288104103 modified "2023-09-25" @default.
- W4288104103 title "Optimal time Quadcopter Descent Trajectories Avoiding the Vortex Ring and Autorotation States" @default.
- W4288104103 doi "https://doi.org/10.48550/arxiv.1909.09069" @default.
- W4288104103 hasPublicationYear "2019" @default.
- W4288104103 type Work @default.
- W4288104103 citedByCount "0" @default.
- W4288104103 crossrefType "posted-content" @default.
- W4288104103 hasAuthorship W4288104103A5013274345 @default.
- W4288104103 hasAuthorship W4288104103A5024148740 @default.
- W4288104103 hasAuthorship W4288104103A5033705417 @default.
- W4288104103 hasAuthorship W4288104103A5053813454 @default.
- W4288104103 hasBestOaLocation W42881041031 @default.
- W4288104103 hasConcept C121332964 @default.
- W4288104103 hasConcept C127413603 @default.
- W4288104103 hasConcept C140820882 @default.
- W4288104103 hasConcept C146978453 @default.
- W4288104103 hasConcept C154945302 @default.
- W4288104103 hasConcept C178790620 @default.
- W4288104103 hasConcept C185592680 @default.
- W4288104103 hasConcept C2775924081 @default.
- W4288104103 hasConcept C2776637919 @default.
- W4288104103 hasConcept C2779199153 @default.
- W4288104103 hasConcept C2780378348 @default.
- W4288104103 hasConcept C41008148 @default.
- W4288104103 hasConcept C47446073 @default.
- W4288104103 hasConcept C57879066 @default.
- W4288104103 hasConceptScore W4288104103C121332964 @default.
- W4288104103 hasConceptScore W4288104103C127413603 @default.
- W4288104103 hasConceptScore W4288104103C140820882 @default.
- W4288104103 hasConceptScore W4288104103C146978453 @default.
- W4288104103 hasConceptScore W4288104103C154945302 @default.
- W4288104103 hasConceptScore W4288104103C178790620 @default.
- W4288104103 hasConceptScore W4288104103C185592680 @default.
- W4288104103 hasConceptScore W4288104103C2775924081 @default.
- W4288104103 hasConceptScore W4288104103C2776637919 @default.
- W4288104103 hasConceptScore W4288104103C2779199153 @default.
- W4288104103 hasConceptScore W4288104103C2780378348 @default.
- W4288104103 hasConceptScore W4288104103C41008148 @default.
- W4288104103 hasConceptScore W4288104103C47446073 @default.
- W4288104103 hasConceptScore W4288104103C57879066 @default.
- W4288104103 hasLocation W42881041031 @default.
- W4288104103 hasOpenAccess W4288104103 @default.
- W4288104103 hasPrimaryLocation W42881041031 @default.
- W4288104103 isParatext "false" @default.
- W4288104103 isRetracted "false" @default.
- W4288104103 workType "article" @default.