Research Paper Space subsystems design: (navigation, control, structure and…)
Proportional Navigation Guidance with Variable Navigation Ratio in terms of the angle of relative velocity with respect to Line-of-Sight and its Rate

S. Hamid Jalali-Naini; Ali Arabian Arani

Volume 13, Issue 2 , June 2020, Pages 1-12

Abstract
  In the present work, the performance of True Proportional Navigation (TPN) with different profiles for effective navigation ratio in terms of the relative velocity angle with respect to line-of-sight is investigated due to initial heading errors and target maneuvers. Since an appropriate profile of effective ...  Read More

Research Paper Space systems design (spacecraft, satellites, space stations and their equipment)
Two-dimensional numerical simulation of ablative thermal insulators in solid rocket motor combustion chamber

mohammad razmjooei; mohammad shahbazi; Fathollah Ommi

Volume 13, Issue 2 , June 2020, Pages 13-35

Abstract
  In this paper, the heat transfer and ablation thermal insulators in solid rocket motor are investigated. Therefore, by collecting and solving the thermal ablation equations, a computer program, using MATLAB software, is developed which can predict the thermal response of insulators in different operating ...  Read More

Research Paper
Optimal Placement of Piezoelectric Sensor/Actuator Patches on Sandwich Panels Considering Debonding Effects

Mohammad Hossein Tirandaz; Milad َAzimi

Volume 13, Issue 2 , June 2020, Pages 37-50

Abstract
  This paper aims to use H2 and H∞ norms to optimally place sensor/actuator patches on a flexible structure. Unlike most existing optimization methods, the proposed approach not only increases the norms of the controlled modes of the system but also it can reduce the system's spillover problems by ...  Read More

Research Paper
Thermal Optimum Trajectory Design of Manned Reentry Vehicles using the Aerodynamic Database Management Method

Seyed Moein Mahmoodzadeh Entezari; Alireza Alikhani; Meysam Mohammadi Amin

Volume 13, Issue 2 , June 2020, Pages 51-61

Abstract
  In this study, a method for designing a thermal optimum reentry path based on aerodynamic database management has been developed using the Kriging and Co-Kriging methods. For the design of the reentry path in the conceptual design phase, the more precise the dynamical model of the reentry vehicle, the ...  Read More

Research Paper Space systems design (spacecraft, satellites, space stations and their equipment)
The presentation of the ARTA CanSat design and construction process at the CANSAT International Competition in Iran

Amirhossain Adami; Mehran Nosratollahi; Hanieh Eshagh nia; Sajjad Kheirkhah; Shiva Emami; Ali Saadat dar; Narges Afsari; Khashayar Mashhadi; Mansour Hozuri

Volume 13, Issue 2 , June 2020, Pages 63-77

Abstract
  The CANSAT design, a simple and small scale of a satellite, is an experience for preparing for the design of a Life cycle of the space project. In this paper, the process of design and construction of ARTA CanSat, which is participated in the scientific-exploratory class of international competition ...  Read More

Research Paper Space subsystems design: (navigation, control, structure and…)
Attitude Control of Spacecraft Using L1 Adaptive Control in the Presence of Actuator and Disturbances

M. Navabi; H. Ghanbari

Volume 13, Issue 2 , June 2020, Pages 79-86

Abstract
  In this paper, attitude control of spacecraft in the presence of uncertainties and disturbances has been simulated. Access to rapid maneuver in spacecraft decreased accuracy. Therefore, to enhance the accuracy of spacecraft rapid maneuver and to resist uncertainties the adaptive control L1 is suggested. ...  Read More

Research Paper Space systems design (spacecraft, satellites, space stations and their equipment)
Applying multi-objective optimization approaches to design an optimal controller for orbital docking by consideration of actuators dynamics and comparing results

Hojat Taei; Pourya Shokrolahi

Volume 13, Issue 2 , June 2020, Pages 87-96

Abstract
  The final phase of orbital rendezvous and docking has been studied in this article. The main objective is to control the position of a chaser that can reach the target in the minimum time, or in other words, bypassing the optimal path. Another important objective of this paper is the minimum energy consumption. ...  Read More

Research Paper Space systems design (spacecraft, satellites, space stations and their equipment)
Design and Fabrication of a dual-polar reflector array antenna for satellite applications

Alireza HeshmatiMoez; S. Hassan Sedighi; Mohamad Soleimani; Mohamad Khalaj AmirHoseini

Volume 13, Issue 2 , June 2020, Pages 99-104

Abstract
  This paper presents a new unit to design dual linearly polarized reflectarray antenna at ku for satellite telecommunication. Two orthogonal sets of parallel dipoles are used for each polarization to achieve more degree of freedom in the design and wider phase variation in the unit cells, consequently. ...  Read More