Articles liés à Efficient Low-Speed Flight in a Wind Field

Efficient Low-Speed Flight in a Wind Field - Couverture souple

Feldman, Michael A

 
9781288910700: Efficient Low-Speed Flight in a Wind Field
Couverture souple
ISBN 10 : 1288910703 ISBN 13 : 9781288910700
Editeur : BiblioBazaar, LLC, 2013

Synopsis

A new software tool was needed for flight planning of a high altitude, low speed unmanned aerial vehicle which would be flying in winds close to the actual airspeed of the vehicle. An energy modeled NLP (non-linear programming) formulation was used to obtain results for a variety of missions and wind profiles. The energy constraint derived included terms due to the wind field and the performance index was a weighted combination of the amount of fuel used and the final time. With no emphasis on time and with no winds the vehicle was found to fly at maximum lift to drag velocity, V(sub md). When flying in tail winds the velocity was less than V(sub md), while flying in head winds the velocity was higher than V(sub md). A family of solutions was found with varying times of flight and varying fuel amounts consumed which will aid the operator in choosing a flight plan depending on a desired landing time. At certain parts of the flight, the turning terms in the energy constraint equation were found to be significant. An analysis of a simpler vertical plane cruise optimal control problem was used to explain some of the characteristics of the vertical plane NLP results.

Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.

Éditeur
BiblioBazaar, LLC
Date d'édition
2013
Langue
anglais
ISBN 10 
1288910703
ISBN 13 
9781288910700
Reliure
Broché
Nombre de pages
90
Coordonnées du fabricant
non disponible
Personne responsable
gpsr@libri.de
gpsr@libri.de

Europaallee 1
Bad Hersfeld
36244
Allemagne