Proceedings ArticleDOI
On The Stability of Dynamic Soaring Orbits of UAVs
About:
The article was published on 2018-06-25. It has received 6 citations till now. The article focuses on the topics: Dynamic soaring.read more
Citations
More filters
Journal ArticleDOI
Fourier Pseudospectral Method for Trajectory Optimization with Stability Requirements
TL;DR: A time-domain approach using Fourier collocation for solving the Floquet eigenvalue problem with real-time constraints is presented.
Journal ArticleDOI
How did extinct giant birds and pterosaurs fly? A comprehensive modeling approach to evaluate soaring performance
TL;DR: In this article , the authors quantified the performance and wind speed requirements of dynamic and thermal soaring for Pteranodon and albatrosses using aerodynamic models and compared them with that of extant birds.
Posted ContentDOI
Soaring styles of extinct giant birds and pterosaurs
TL;DR: The results confirmed those from previous studies that Pteranodon and Argentavis magnificens used thermal soaring and indicated that Pelagornis sandersi and Quetzalcoatlus had a poor ability both in dynamic and thermal soaring.
Proceedings ArticleDOI
Parallelism In Stability Of Dynamic Soaring Orbits And Powerless Ascent/Descent
TL;DR: In this article , the authors consider a powerless steady climb and descent case of a UAV in the presence of linear wind shear and study a similarity in trend between the eigenvalues of this case and dynamic soaring orbits.
References
More filters
Journal ArticleDOI
Bounds for eigenvalues using traces
TL;DR: In this paper, the modulus, real part, and the imaginary part of a linear combination of the ordered eigenvalues of a square complex matrix are obtained for the trace of a matrix and its square.
Journal ArticleDOI
Engineless unmanned aerial vehicle propulsion by dynamic soaring
TL;DR: In this article, the likelihood of favorable winds is predicted based on long-term weather statistics and knowledge of the minimal and maximal permissible wind strengths for the wandering albatross and an unmanned aerial vehicle of similar size.
Journal ArticleDOI
A Simplified Stability Criterion for Linear Discrete Systems
TL;DR: In this paper, a simplified analytic test of stability of linear discrete systems is obtained, which yields the necessary and sufficient conditions for a real polynomial in the variable z to have all its roots inside the unit circle in the z plane.
Proceedings ArticleDOI
A guidance and control strategy for dynamic soaring with a gliding UAV
TL;DR: The basic strategies for dynamic soaring in vertical wind shear are explored and a simple piecewise trajectory based controller is developed to identify regions suitable for soaring and attempt traveling energy-neutral trajectories.
Journal ArticleDOI
A comparison of stability computational methods for periodic solution of nonlinear problems with application to rotordynamics
TL;DR: In this paper, a comparative study of five different stability computational methods based on the Floquet theory is presented, which are compared in terms of accuracy and CPU performance for rotating machinery with rotor-to-stator contact and a variable number of degrees of freedom.