Space subsystems design: (navigation, control, structure and…)
Design for reliability of a space system in the conceptual design phase

hamid reza ali mohamadi; Hassan Naseh

Articles in Press, Accepted Manuscript, Available Online from 25 September 2023

Abstract
  Achieving to new technologies with high reliability, along with reducing the cost and time of the design cycle, is one of the most important challenges in complex systems. In this paper, reliability based design of a space system is discussed in the conceptual design phase. Normally, there are eight ...  Read More

Space subsystems design: (navigation, control, structure and…)
Development of an EKF Based Gyro Calibration Method for High-Precision Attitude Estimation

Amir Labibian

Volume 17, Issue 1 , March 2024, , Pages 11-20

Abstract
  IIn high resolution remote sensing satellites, meeting stability and pointing requirements are very crucial in mission’s success. In this regard, usually, very accurate gyroscopes are utilized as one of the main attitude sensors. In order to avoid decreasing attitude estimation accuracies, gyroscopes ...  Read More

Space subsystems design: (navigation, control, structure and…)
Design and Fabrication of Planar Sub-Array for Satellite Data Transmission Directive Conformal Array Antenna

Arian Zakiani; Seyed Hassan Sedighy; Razieh Narimani

Volume 17, Issue 1 , March 2024, , Pages 73-79

Abstract
  Due to the limited communication time between LEO satellites and the ground station and large volume of satellite image data, it is necessary to establish a high transmission rate connection. Therefore, the use of a high-efficiency satellite antenna is inevitable. In order to use the limited viewing ...  Read More

Space subsystems design: (navigation, control, structure and…)
Attitude and Vibration Control of a Flexible Spacecraft Using Hybrid Adaptive Super-Twisting Non-Singular Terminal Sliding Mode Control

Valiollah Shahbahrami; Milad َAzimi; َAlireza Alikhani

Volume 16, Issue 4 , December 2023, , Pages 1-13

Abstract
  In this paper, a robust adaptive hybrid control approach based on a combination of super-twisting and non-singular terminal sliding mode control (STNSMC) approaches for vibration and attitude control of a flexible spacecraft with fully coupled dynamic is developed. The proposed adaptation law eliminates ...  Read More

Space subsystems design: (navigation, control, structure and…)
Structural Design Modification of a CubeSat Regarding Modal Compatibility for Launching by Vega C Launcher

Mohammad Haji Jafari; Afshin ValiMohammad; Mahsa Mahdavi

Volume 16, Issue 4 , December 2023, , Pages 41-56

Abstract
  In this research, the dynamic response of a U-12 CubeSat (20x20x30 cm) is investigated for three configurations during the launch conditions. Despite the existence of a successful design for this satellite, adding a mount to install on a standard adapter, the structural design of the satellite has been ...  Read More

Space subsystems design: (navigation, control, structure and…)
Adaptive Generalized-Minimum-Variance Attitude Control of a High Pointing-Accuracy Remote Sensing Satellite

Ali Kasiri; Farhad Fani Saberi; Vahid Joudakian

Volume 16, English Special Issue , November 2023, , Pages 1-23

Abstract
  Many studies have investigated the problem of external disturbance rejection and also increasing the attitude control system's robustness against the parametric uncertainties. Due to stochastic properties, noise effect minimization becomes an interesting and challenging problem in the field of spacecraft ...  Read More

Space subsystems design: (navigation, control, structure and…)
A New Adaptive Controller for the Three ‎Axis Satellite Simulator Based on Continuous ‎Time Delay Petri Nets Tool

Abbas Dideban; Alireza Ahangarani Farahani

Volume 16, English Special Issue , November 2023, , Pages 25-38

Abstract
  This paper presents a new control methodology based on Continuous Time Delay Petri Nets (CTDPN) tool for the attitude control of satellite simulator. The graphical and mathematical features of this tool help the expert designer to design an appropriate controller using graphical model easily, and then ...  Read More

Space subsystems design: (navigation, control, structure and…)
Attitude Control of Nanosatellite Using Optimal Quadratic Linear and Nonlinear Methods

Arash Abarghooei; Hassan Salarieh; Pedram Hosseiniakram

Volume 16, English Special Issue , November 2023, , Pages 51-64

Abstract
  Linear algorithms are the most widely used method for satellite attitude control using reaction wheels because of their simplicity and low computational cost. The first part of the paper introduces different attitude determination and control algorithms, and reviews resources that utilized optimal linear ...  Read More

Space subsystems design: (navigation, control, structure and…)
Form-Finding and Free Vibration Analysis of a Class-One Triplex Tensegrity Prism

Milad َAzimi; Samad Moradi

Volume 16, Issue 3 , September 2023, , Pages 15-26

Abstract
  This paper deals with form-finding and free vibration analysis of a pre-stressed class-one triplex tensegrity structure. The form-finding is performed via a two-step procedure, the nodal coordinates connectivity matrix, and structural element force density determination. Accordingly, the possible states ...  Read More

Space subsystems design: (navigation, control, structure and…)
Impulsive Load Destructive Effects Reduction in Launch Vehicles Using Structural Joint

Hamed Kashani

Volume 16, Issue 3 , September 2023, , Pages 27-36

Abstract
  Aerospace systems and subsystems are subjected to impulsive loads due to several reasons like engine start and burnout, separation, and so on. These loads may make temporary or permanent failures in some sensitive components or subsystems. To avoid these failures some constraints should be consider in ...  Read More

Space subsystems design: (navigation, control, structure and…)
Introducing the Nonlinear State Control Algorithm of the Air Bearing Laboratory Simulator Based on the Gain Coefficients Dependent on the State Variables

Alireza Ahangarani Farahani; Amirhossain Adami; Hamed Arefkhani

Volume 16, Issue 3 , September 2023, , Pages 79-89

Abstract
  In this article, a new approach has been presented in the design of a satellite's status controller using reaction wheels. First, a non-linear controller whose gains depend on the state variables at any moment is proposed. In the first step, the process of extracting control coefficients using the GA ...  Read More

Space subsystems design: (navigation, control, structure and…)
Implementation and Comparison of Attitude Estimation Algorithms Using Low-Cost Sensors

M. Navabi; M. Salehi

Volume 16, Issue 2 , June 2023, , Pages 63-77

Abstract
  In a flying system, attitude control is one of the essential subsystems. In this subsystem, estimating the current state is very important to control the state, which is achieved by considering the attitude sensors. Comprehensive research is being done today to reduce the cost of Attitude sensors in ...  Read More

Space subsystems design: (navigation, control, structure and…)
Thermal Modeling of Lidar Payload in a Remote Sensing Satellite under System Level Considerations with a Review on its Challenges

Masoud Khoshsima; Mehran Shahryari ‎; Sajjad Ghazanfarinia; Shiva Emami; yaser saffar

Volume 16, Issue 2 , June 2023, , Pages 79-91

Abstract
  The results show that the lidar in cold orbital conditions has a temperature increase of about 38 degrees Celsius due to thermal design. Also, the range of temperature fluctuations before applying thermal design in the cold state of temperature changes in a circuit is about 14 degrees and after designing ...  Read More

Space subsystems design: (navigation, control, structure and…)
Analysis of the Effect of Layer Perforation Pattern on the Rate of Gas Leakage from Multilayer Thermal Insulation During Satellite Launch

Hamed Ramezani Najafi; S.M.Hossein Karimian; Mohammad Reza Pakmanesh

Volume 16, Issue 1 , March 2023, , Pages 11-21

Abstract
  One of the passive components of the satellite Thermal control subsystem is multilayer insulation. In order to prevent air from being trapped between the multilayer insulation layers, which causes the thin layers to inflate and disintegrate during satellite launches, holes are made in the layers. These ...  Read More

Space subsystems design: (navigation, control, structure and…)
Design and Implementation of a Balance System for the CubeSat Attitude Determination and Control Tabletop Simulator

Mahdi Rivandi; Mehran Mirshams; Mohammad Zarourati

Volume 16, Issue 1 , March 2023, , Pages 75-88

Abstract
  To test the Attitude Determination and Control Subsystem of a satellite, it is necessary to have an attitude dynamics simulator, and the simulator must be in a balance condition. Disturbances on the balance system in the simulation include deviations caused by the difference between the center of mass ...  Read More

Space subsystems design: (navigation, control, structure and…)
Miss Distance Analysis of First-Order Explicit Guidance Law with/without Radome effect

Amirhossein Mirzaei; S. Hamid Jalali-Naini; Ali Arabian Arani

Volume 15, Issue 4 , December 2022, , Pages 1-18

Abstract
  The miss distance analysis of the first-order explicit guidance law (EGL) is carried out using linearized equation of motion in the normalized form in order to obtain normalized miss distance curves. The initial heading error, constant target, acceleration limit, radome refraction error, and fifth-order ...  Read More

Space subsystems design: (navigation, control, structure and…)
Design and Dynamic Analysis for Vertical and Horizontal Cylindrical Body in Reentry Flight

Morteza Tayefi; Ramin Kamali Moghadam

Volume 15, Issue 3 , September 2022, , Pages 1-9

Abstract
  To create drag and reduce the speed of space payloads in the phase of entering the atmosphere, the payload body itself can be used as brake mechanisms without using additional tools. The approach analyzed in this paper is the separation of the nose and then the stability of the cylindrical body in horizontal ...  Read More

Space subsystems design: (navigation, control, structure and…)
Bearing only Tracking for Maneuver Target using Nonlinear Second-Order Markov Model

Mohsen Ebrahimi; Amir Farhad Ehyaei

Volume 15, Issue 3 , September 2022, , Pages 11-22

Abstract
  In this paper, in addition to investigation and analyzing the dynamic model of a maneuver target, a new method based on the Interaction Multiple Model (IMM) method is presented to solve the tracking problem in presence of measurement noise. In this procedure, two models are used along with an extended ...  Read More

Space subsystems design: (navigation, control, structure and…)
Investigation on Performance Characteristics of Hydrazine Monopropellant Thruster according to Reaction Chamber Adiabatic Temperature

Seyyed Rashad Rouholamini; Mohammad Ali Amirifar; Alireza Rajabi; Nooredin Ghadiri Massoom

Volume 15, Issue 3 , September 2022, , Pages 33-47

Abstract
  In this paper, by creating and developing a code based on thermodynamics and gas dynamics equations, the performance characteristics of a 1N hydrazine monopropellant thruster such as thrust force, specific impulse, characteristic exhaust velocity, and propellant mass flow rate have been studied theoretically ...  Read More

Space subsystems design: (navigation, control, structure and…)
Design of an Nonlinear Extended State Observer to Estimate Unmeasurable Information on the Problem of Flying Objects Guidance

Mahsa Javaheripour; Ahmad Reza Vali; Vahid Behnam Gol; Firouz Allahverdizadeh

Volume 15, Issue 3 , September 2022, , Pages 67-78

Abstract
  Proportional navigation is one of the most widely used methods in guiding flying objects. This method requires the rotation rate of the line between the interceptor and the target to calculate the guidance command. For a variety of reasons, including cost savings, simple sensors are used to measure tracking ...  Read More

Space subsystems design: (navigation, control, structure and…)
Active Vibration Control of a Maneuvering Flexible Spacecraft Using Hybrid Actuators: A Lyapunov-Based Control Approach

Milad َAzimi; Samad Moradi

Volume 15, Issue 2 , June 2022, , Pages 1-13

Abstract
  This paper presents a study concerning active vibration control of a smart flexible spacecraft during attitude maneuver using thrusters and reaction wheels (RW) in combination and piezoelectric (PZT) sensor/actuator patches. The large-angle maneuver and residual vibration of the spacecraft are controlled ...  Read More

Space subsystems design: (navigation, control, structure and…)
Satellite Status Control Using Tabulation Gain Controller in a Variable Parameter System

M. Navabi; F. Malekpour

Volume 15, Issue 2 , June 2022, , Pages 15-25

Abstract
  In the variable parameter linear method, which is used to express systems with time-varying state-space matrices, the stability and performance of the feedback system are guaranteed, and there is a significant potential for improving efficiency. The dynamics of these systems depend on a variable parameter ...  Read More

Space subsystems design: (navigation, control, structure and…)
Thermal Effects of the Space Environment on the Radiation Characteristics of a Reflector Antenna in LEO Spacecrafts

Fatemeh Asdaghpour; Fatemeh Sadeghikia; Mohammad Ali Farsi

Volume 15, Issue 2 , June 2022, , Pages 103-113

Abstract
  Antennas, which are usually installed on the outer shell of these systems, are therefore always exposed to the thermal fluctuations of the space environment. Thermal fluctuations cause the antenna surfaces to expand, contract and distort and can cause the antenna to malfunction. In this paper, the effects ...  Read More

Space subsystems design: (navigation, control, structure and…)
Rapid Performance Sizing of Reaction Wheels in a Very High Resolution Remote Sensing Satellite Using Matching Diagram Technique

Amir Reza Kosari; Alireza Ahmadi; Alireza Sharifi; Masoud Khoshsima

Volume 15, Issue 1 , March 2022, , Pages 21-39

Abstract
  Very High Resolution Passive Scan Agile Earth Observation Satellites are able to maneuver around all their three body axes and scan the target area in different directions, simultaneously. The most stringent mid-level requirements which dominate their attitude determination and control subsystem performance ...  Read More

Space subsystems design: (navigation, control, structure and…)
Re-Entry Trajectory Design with Use of Aided Optimization Algorithm through Combination of Classic Guidance & Acceleration Profile Optimization

Mohammad Javad Poustini; Seyed Hossein Sadati; Yosof Abbasi; Seyyed Majid Hosseini

Volume 15, Issue 1 , March 2022, , Pages 51-62

Abstract
  Trajectory optimization is a familiar method for most of re-entry and Re-usable vehicles. This is because of the ability to include almost all of the problem constraints without facing restrictions such as time & Calculation issues. Adding or removing constraints in trajectory optimization problem ...  Read More