Minimum Fuel Circling Flight for Unmanned Aerial Vehicles in a Constant Wind
MetadataShow full item record
This paper investigates characteristics of minimum-fuel trajectories for an Unmanned Aerial Vehicle (UAV) in high altitude, circling flight under a constant wind. Previous research has shown that periodic circling flight, consisting of a boost arc (maximum thrust) and a coast arc (minimum thrust), improves the fuel consumption when compared to steady-state circling. Since the periodic flight includes ascending flight at the boost arc and descending flight at the coast arc, it is naturally expected that the wind energy influences the trajectories. In this work, numerical simulations are used to investigate the effects of both wind speed and direction on a UAV flying around one loop enclosed in a cylindrical boundary area. The results show that the optimal wind direction manifests as a tail wind just at the coast arc. In addition, the results demonstrate that the optimal wind direction changes with the wind speed and, in some cases, the trajectory under high winds results in smaller fuel consumption than the zero wind case. Thus, the importance of these results is two fold. First, that the periodic flight reveals the existence of an optimal wind direction for the minimum fuel circling. Second, and probably more importantly, generating optimal trajectories without rejecting wind disturbances provides an autonomous capability of using wind to its advantage and therefore improving fuel consumption or perhaps other mission performance metrics.
The article of record as published may be located at http://arc.aiaa.org/doi/abs/10.2514/6.2008-6634AIAA Guidance, Navigation and Control Conference and Exhibit 18 - 21 August 2008, Honolulu, Hawaii
Showing items related by title, author, creator and subject.
Bollino, Kevin; Harada, Masanori (American Institute of Aeronautics and Astronautics, Inc, 2009-08);This paper investigates characteristics of minimum-fuel Figure-8 trajectories for an Unmanned Aerial Vehicle (UAV) at high altitude. Given that loitering over an area of interest (i.e., ground target) falls within the ...
Cascio, Joseph A. (Monterey, California. Naval Postgraduate School, 2008-12);This work investigates the problem of robotic arm control with the goal of achieving given performance requirements by solving for the optimal joint trajectories and corresponding controls for tasks, such as point-to-point ...
Duncan, Robert C. (Cambridge, Massachusetts; Massachusetts Institute of Technology, 1960-01);Entry of astronautical vehicles into planetary atmospheres is examined in this thesis with respect to interactions of the guidance function, vehicle performance, trajectory prediction, and mission objectives. All entry ...