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A strategy for trajectory design, motion camouflage, is introduced within the context of orbital relative motion. At first the equations of orbital motion for this approach are developed. The control strategy is then implemented using both an impulsive and continuous approach. A number of parameters are then optimized to minimize the fuel mass. The simulation results reveal that the predator successfully...
In the entry phase, aero-environment is extremely complex for Reusable Launch Vehicles (RLVs). This brings a huge challenge to design the entry guidance law for RLVs. In this paper, an entry trajectory planning method for RLVs is researched and the algorithm is improved to ensure the continuity and smoothness of the longitudinal reference trajectory. Meanwhile, the skipping of trajectory control is...
A new approach for developing guidance and control laws for aircraft that have departed controlled flight is presented. The method leverages and produces flight trajectories similar to what pilots would perform. The method induces a periodic orbit and then escapes from the periodic orbit into normal flight. The problem is approached from the inertial reference frame in order to better define the behavior...
This paper presents a guidance algorithm for formation flight of two UAVs. Since the nonlinear guidance algorithm have good properties to follow nonlinear flight trajectory based on geometric and kinematic, the nonlinear guidance algorithm is modified as a leader-follower station keeping formation control law for two UAVs using the relation of the nonlinear guidance algorithm to the proportional navigation...
For a range correction fuze of a rocket range-extended projectile, a DSP-based trajectory calculation and correction controller that is cooperated with MCU is designed to examine the axial acceleration during the flying of a projectile, and to perform the trajectory calculation and the start-up time calculation of a correction mechanism, and to control the action of a resistance-correction mechanism...
An optimal trajectory is very important to reusable launch vehicle (RLV) which facing the critical heating and aero force in reentry environment. The trajectory planning is a typical large scale and multiconstraint optimization problem. In this paper, an optimal trajectory planning for RLV from the beginning upper atmosphere state to lower atmosphere site with the minimum accumulated heat load or...
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