Space subsystems design: (navigation, control, structure and…)
Vibration Control Design of Fuel Sloshing in a Spacecraft Using Virtual Actuator

Abdolmajid khoshnood; Ali Aminzadeh; Peyman Nikpey

Volume 15, Issue 1 , March 2022, , Pages 63-71

Abstract
  This paper is dedicated to modeling of fuel sloshing dynamics and its effect on the stability and control of the space vehicle. Sloshing due to the liquid movement in the fuel tank of a space vehicle's propulsion system can be effective on the vehicle’s control and stability. Force and moment interaction ...  Read More

Space subsystems design: (navigation, control, structure and…)
Developing a Universal Software for the Conceptual Design of Cryogenic Rocket Propulsion System

Nourbakhsh Fouladi; Neda sadat Seddighi renani

Volume 15, Issue 1 , March 2022, , Pages 73-87

Abstract
  In this article, a universal algorithm and engineering software is presented for the conceptual design of cryogenic rocket propulsion system. The algorithm consisting five engine working cycles: pressure fed, gas generator, staged combustion, closed and opened expansion cycles. For validation, the Vulcain ...  Read More

Space subsystems design: (navigation, control, structure and…)
Optimal Proportional Navigation in Three-Dimensional Space Using Model Predictive Control Approach

Reza Sheikhbahaei; Saeed Khankalantary

Volume 14, Issue 4 , December 2021, , Pages 51-59

Abstract
  In this study, on the basis of proportional navigation strategy, design of explicit optimal guidance law for missiles tracking maneuvering targets in three-dimensional space using model predictive control is addressed. The model predictive control employs a model to predict the future process behavior ...  Read More

Space subsystems design: (navigation, control, structure and…)
Attitude nonlinear predictive control of an under actuated spacecraft

M. Navabi; P. Zarei

Volume 14, Issue 4 , December 2021, , Pages 77-83

Abstract
  The use of four reaction wheels to control the three-axis attitude of the spacecraft, considering its mechanical performance and the possibility of its failure, is a practical solution in the face of a defect in one of the wheels. In this article, the optimal control of the spacecraft, which has four ...  Read More

Space subsystems design: (navigation, control, structure and…)
The Turbulence Model in the Spacecraft by using A Moving Pulsed Ball Model

M. Navabi; Ahmad Ebrahimi

Volume 14, Issue 3 , September 2021, , Pages 15-22

Abstract
  Turbulence in the spacecraft tanks has undesirable effects during maneuvers. Therefore, considering the importance of the correct orbit maneuver to reach the target orbit, it is necessary to model and select a proper method to control it before performing the orbital maneuvers. In this paper, by using ...  Read More

Space subsystems design: (navigation, control, structure and…)
Dynamic and Stability Analysis of a Cracked Rotating Flexible Beam

Milad َAzimi; Samad Moradi

Volume 14, Issue 3 , September 2021, , Pages 51-63

Abstract
  The free and forced vibration analysis of a rotating large flexible structure with a single crack is investigated using the Homotopy Perturbation Method (HPM). The crack is modeled with a torsional spring element on a structure that follows the Euler-Bernoulli theory. The nonlinear equations of motion ...  Read More

Space subsystems design: (navigation, control, structure and…)
Kinematic Modelling Without Singularity and Nonlinear Control of Satellite Attitude Using Direct Adaptive and Fuzzy PD Control Methods

M. Navabi; Nazanin Safaei Hashekvaei

Volume 14, Issue 2 , June 2021, , Pages 77-88

Abstract
  Adaptive control technique is taken into consideration because of overcoming the problem of existence of uncertainties in the space missions. In this paper, a novel optimal direct adaptive control technique which is based on Markov parameters is presented. In this technique, the system's performance ...  Read More

Space subsystems design: (navigation, control, structure and…)
Symmetric periodic solution around asteroid 216 Kleopatra and its stability in the presence of solar radiation pressure

Mahdi Jafari Nadoushan; Kosar Aramkhah

Volume 14, Issue 1 , March 2021, , Pages 1-13

Abstract
  In this paper, the dumbbell model is used for gravity field of asteroid 216 Kleopatra. Utilizing the model results in governing equations of motion of a spacecraft around an asteroid similar to those of motion of a spacecraft in the restricted circular three-body problem. The equilibrium points and Jacobi ...  Read More

Space subsystems design: (navigation, control, structure and…)
GEO satellite station keeping mass design based on data mining

Ehsan Maani; Peyman Nikpey; Ehsan Zabihian

Volume 14, Issue 1 , March 2021, , Pages 23-33

Abstract
  n GEO communicational satellites, thrusts are being used for many missions such as station keeping, longitude change maneuver and actuators desaturation. These types of actuators need fuel and its estimation requires many complicated calculations. In this paper, a novel method based on availed data for ...  Read More

Space subsystems design: (navigation, control, structure and…)
A Modification to Integral Pulse-Width Pulse-Frequency Modulator

S. Hamid Jalali-Naini; omid Omidi Hemmat

Volume 14, Issue 1 , March 2021, , Pages 55-64

Abstract
  This paper presents a modification to a type of Pulse-width Pulse-Frequency (PWPF) Modulator utilized an integrator block. In this modulator that called here as "Integral Pulse-Width Pulse-Frequency (IPWPF)," an integrator is used instead of the first-order low-pass filter. To improve the performance ...  Read More

Space subsystems design: (navigation, control, structure and…)
Model-Free Predictive Fault-Tolerant Control for Spacecraft Roto-Translational Relative Motion

Mohammad Chiniforoushan; Mahdi Mortazavi; kamran raissi

Volume 14, Issue 1 , March 2021, , Pages 77-92

Abstract
  The problem of jointly controlling relative attitude and position of spacecraft in the presence of actuator fault is investigated in this paper. Following a description about drawbacks and limitations of the existing models and the control approaches based on them, a new formulation of the spacecraft ...  Read More

Space subsystems design: (navigation, control, structure and…)
Proportional Navigation with Linear Acceleration and Line-of-Sight Acceleration Feedbacks

S. Hamid Jalali Naini; Ali Arabian Arani

Volume 13, Issue 4 , December 2020, , Pages 1-13

Abstract
  In this paper, a modified proportional navigation (PN) with weighted combination of linear acceleration and line-of-sight (LOS) acceleration feedback is suggested. For this purpose, a comprehensive miss distance analysis is carried out for PN with linear acceletation feedback and PN with LOS acceleration ...  Read More

Space subsystems design: (navigation, control, structure and…)
Optimal Adaptive Control of Satellite Attitude in Presence of Uncertainty in Moment of Inertia Using Markov Parameters

M. Navabi; Nazanin Safaei

Volume 13, Issue 4 , December 2020, , Pages 25-35

Abstract
  Several novel control techniques have been created as a result of the diversity of researches which are conducted about the problem of satellite attitude control. There are always uncertainties in the problem of satellite attitude control in the space missions. Therefore, Adaptive control is a method ...  Read More

Space subsystems design: (navigation, control, structure and…)
Development of MIL and PIL testbed for Student Microsatellite Attitude Control Subsystem

Niki Sajjad; Mehran Mirshams; Shahrokh Jaliian

Volume 13, Issue 3 , September 2020, , Pages 51-62

Abstract
  This paper presents design, analysis and performance verification test of student microsatellite Attitude Determination and Control Subsystem (ADCS) . ADCS design and implementation procedure contains several various steps. There are four main test levels during simulation called “Model-in-the-Loop”, ...  Read More

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

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

Space subsystems design: (navigation, control, structure and…)
Control Allocation for Redundant Thruster of a Spacecraft via Direction-Preserving Approach in Simplex Algorithm

Maziar Shefaee Roshan; Mahdi Ghobadi; Mahdi jafari Nadoushan

Volume 13, Issue 1 , March 2020, , Pages 71-82

Abstract
  Using linear programming method in control allocation for attitude control subsystem of spacecraft with redundant thrusters is studied in this paper. The simplex algorithm is utilized as a solver and the Direction Preserving and Bodson’s Reduced size Direction preserving approaches are used as ...  Read More