Finally, analytical expressions of the optimum thrust-vector angle have been derived for each performance, in complement to the expressions already provided by former studies on this subject.
Then the code, called by three optimization algorithms (i.e. successive quadratic programming method, genetic algorithm and interdigitation strategy) respectively, is used to design axisymmetric optimum-thrust nozzle.
Due to the complex kinematics of such vehicles, however, it should be noted that there would be always an optimum for the thrust force in order to control and navigate the vehicle to the destination point, and to avoid the severe undesired side-forces.
From the theoretical point of view, systems composed by masonry arches or vaults would require, during construction, the simultaneous activation of all structural elements in order to reach the optimum balance of thrusts.
The vane position is studied which shows that there is an optimum range for higher thrust and efficiency.
The design parameters are analyzed for optimum value to get maximum thrust force.
Furthermore, the value of optimum pressure ratio rf for maximum specific thrust increases with TIT.
In contrast, its translational action field (Fig. 8C, right) can be seen to have a single optimum in the frontal position, corresponding to thrust movement which falls off smoothly when deviating from this position along any direction.
To assess the accessibility of the pole-sitter orbit, this paper investigates optimum Earth pole-sitter transfers employing low-thrust propulsion.
A design optimization framework using an evolutionary algorithm and the Kriging surrogate model is developed and finds the optimum solution for multiple wing sails to maximize the thrust coefficient.
