Research Note Space Engineering/Space Orbit Mechanics/Space Sciences/...
Optimal Path Planning for Autonomous Space Maneuvers Based on Reinforcement Q-learning and Cubic Network

Iman Shafieenejad; Mohammmad Siami Araghi; Alireza Sekhavat Benis; Ali Mirzaee; Iman Fozouni Taloki

Volume 6, Issue 2 , September 2022, Pages 1-10

  This paper proposes a method based on the reinforcement Q-learning to solve the problem of fully autonomous optimal path planning of a space robot by increasing the number of available satellites in earth orbits, designation, and implementation of satellite orbital servicing stations considered by researchers. ...  Read More

Research Article Other Related Fields
Design of Compact Filters with Asymmetrical Response Based on Dual-mode Resonators for Satellite Communications

Zahra Shaterian; Ali Karami Horestani

Volume 6, Issue 2 , September 2022, Pages 11-21

  This research is focused on the design of microwave filters with asymmetric frequency response with a single transmission zero below or above the passband. The procedure to design such filters in dual-mode cylindrical cavities is presented. It is shown that while realizing filters, especially with a ...  Read More

Research Article Aerodynamics/Fluid Mechanics/Aeroacoustics/...
Simulation of the Aerodynamic Performance of a Symmetrical Airfoil Using Dissipative Dynamic Particle Method

Rokhshaad Dashti gohari; Ramin Zakeri; Mohammad Mohsen Shahmardan; Mohsen Nazari

Volume 6, Issue 2 , September 2022, Pages 23-39

  This paper uses the dissipative particle dynamic method to simulate the flow around a micro-airfoil. Due to the common problem in applying boundary conditions and the lack of aerodynamic study of objects in this molecular method, we decided to study this field. In this study, periodic boundary conditions ...  Read More

Scientific extension Space Engineering/Space Orbit Mechanics/Space Sciences/...
An Overview of the Importance, Challenges, and Methods of Orbital Rendezvous and Docking

Pourya Shokrolahi; Masoud Ebrahimi

Volume 6, Issue 2 , September 2022, Pages 41-54

  In this article, orbital rendezvous and docking, as a key and important subject that has fundamental and important applications in the field of space have been studied. The main objective of this paper will be the investigation of the general and important sections of a rendezvous and docking mission. ...  Read More

Research Article Structure/Solid Mechanics/Solid Dynamics/Vibrations/Aeroelasticity/...
Investigation of the Effect of Polymer and Aluminum Foams on the Collapse Behavior of Double-walled Thin-walled Steel Cone Structures

Masoud Salehnezhad; Mahmoud Shariati; Amir Najibi; Masoud Mahdizadeh Rokhi

Volume 6, Issue 2 , September 2022, Pages 55-69

  The effect of polymer and aluminum foams on the energy absorption capacity of double-walled conical shells subjected to oblique compressive loading has not been reported experimentally. In this paper, the amount of energy absorption of double thin-walled conical shells, filled with polymer foam and aluminum ...  Read More

Scientific extension Aerodynamics/Fluid Mechanics/Aeroacoustics/...
Methods for Attenuation of Unmanned Aerial Vehicle Noise

Mostafa Mahmoodi; Ali Moradi

Volume 6, Issue 2 , September 2022, Pages 71-83

  Unmanned aerial vehicles (UAVs) like drones (quadcopters, hexacopters, octocopters, etc.) can be a source of significant acoustic noise. High noise makes them less suitable for use in densely populated urban areas, particularly during take-off, landing, and low-level flight, due to the noise annoyance. ...  Read More