TY - GEN
T1 - Trajectory optimization for maximizing the range of powered sailplanes with retractable propeller
AU - Sachs, G.
AU - Lenz, J.
AU - Holzapfel, F.
PY - 2009
Y1 - 2009
N2 - The range of a powered sailplane employing a retractable propeller-engine combination is maximized. The maximum range trajectory is of periodic nature because there are alternating flight segments in terms of the best operating condition of the powered phase as opposed to that with zero thrust where the propeller-engine combination is retracted. It is shown that a significant enlargement of the maximum range can be achieved when compared with the best steady-state cruise. Solutions of the periodic optimal flight poblem are constructed, using an efficient optimization method and a realistic mathematical model for describing the motion of the vehicle as well as the procedure for extending and retracting the propeller-engine combination.
AB - The range of a powered sailplane employing a retractable propeller-engine combination is maximized. The maximum range trajectory is of periodic nature because there are alternating flight segments in terms of the best operating condition of the powered phase as opposed to that with zero thrust where the propeller-engine combination is retracted. It is shown that a significant enlargement of the maximum range can be achieved when compared with the best steady-state cruise. Solutions of the periodic optimal flight poblem are constructed, using an efficient optimization method and a realistic mathematical model for describing the motion of the vehicle as well as the procedure for extending and retracting the propeller-engine combination.
UR - http://www.scopus.com/inward/record.url?scp=78049320415&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78049320415
SN - 9781563479786
T3 - AIAA Guidance, Navigation, and Control Conference and Exhibit
BT - AIAA Guidance, Navigation, and Control Conference and Exhibit
T2 - AIAA Guidance, Navigation, and Control Conference and Exhibit
Y2 - 10 August 2009 through 13 August 2009
ER -