Optimal Level Flight Trajectories of Stratospheric Airship
This paper focuses on the stratospheric airship in the level flight state, and designs a optimal method which combines the direct collocation method and sequentially quadratic programming algorithm to get the optimal trajectories. Both the minimum time and fuel are considered. The result indicates that this method is very efficient to the problem and can supply the idea to utilize the wind to save fuel and time in the actual flight.
F. P. Qin and L. Chen, "Optimal Level Flight Trajectories of Stratospheric Airship", Advanced Materials Research, Vols. 383-390, pp. 5216-5221, 2012