...Zunhui Zhao; Haibin Shang; Pingyuan Cui; Xiangyu Huang Purpose The purpose of this paper is to present a solution space searching method to study the initial design of interplanetary low thrust gravity assist trajectory. Design/methodology/approach For reducing the complexity and nonlinearity...

...Fan Han; B.L. William Wong; Stephen Gaukrodger Purpose The purpose of this paper is to present a new visualization display based on a pinch‐and‐pull concept with 4D spatial‐temporal energy trajectory (4DET), for energy profile management of air traffic, specifically in relation to air traffic...

... helicopter flights. Originality/value A complete process of control‐oriented, physics‐based model development for helicopters followed by MPC design is developed. It is also proved that constrained MPC can be used and implemented online to robustly track discontinuous helicopter trajectories...

...Shaofei Chen; Hongfu Liu; Jing Chen; Lincheng Shen Purpose The purpose of this paper is to plan the penetration trajectory for unmanned aerial vehicle (UAV) in the presence of radar‐guided surface to air missiles (SAMs). Design/methodology/approach The penetration trajectory planning problem...

...Jingyang Li; Shengping Gong; Xiang Wang; Jingxia Li Purpose The purpose of this paper is to establish an orbital launch window for manned Moon‐to‐Earth trajectories to support China's manned lunar landing mission requirements of high‐latitude landing and anytime return, i.e. the capability...

... nature of this method promises real‐time applications even for tough terrains in terms of shape and peculiarities. The method could always assist to design trajectories in an off‐line manner. Design/methodology/approach To achieve the aforementioned goal, the method effectively incorporates...

...A.R. Babaei; M. Mortazavi Purpose The purpose of this paper is to propose an efficient algorithm for trajectory planning of unmanned aerial vehicles (UAVs) in 2D spaces. This paper has been motivated by the challenge to develop a fast trajectory planning algorithm for autonomous UAVs through mid...

...S.H. Pourtakdoust; F. Pazooki; M. Fakhri Noushabadi Purpose The purpose of this paper is to devise a new approach to synthesize closed‐loop feedback guidance law for online thrust‐insensitive optimal trajectory generation utilizing neural networks. Design/methodology/approach The proposed...

...Yu Li; Naigang Cui; Siyuan Rong Purpose The purpose of this paper is to optimize the downrange for hypersonic boost‐glide (HBG) missile under near‐real condition, and to validate the suitability of proposed wall cooling materials. Design/methodology/approach The trajectory optimization problem...

... is based on a nominal trajectory computed prior to take‐off. A set of updating computations begins anew at the time instant t_g of transition from endoatmosphere to exoatmosphere. The updating computations determine a guidance trajectory and an associated control law...

... and local optimality. Design/methodology/approach First, the trajectory optimization problem comes down to a nonlinear constraint parameter optimization by using the concept of traditional hybrid method. Then, one utilizes genetic algorithm (GA) to solve this parameter optimization problem after...

...Alexander Bolonkin The author developed a theory of optimal trajectories for air vehicles with variable wing area and conventional wings. He applied a new theory of singular optimal solutions and obtained the optimal flight in many cases. At first glance, the results may seem strange however...