Aerospace Science and Technology
Droplet Breakup Analysis inside Porous Media at Different Porosities, Using LBM

Mohammad Reza Salimi; Mohammad Taeibi Rahni; Abolfazl Amiri Hezaveh

Articles in Press, Accepted Manuscript, Available Online from 10 April 2022

https://doi.org/10.22034/jast.2022.322220.1110

Abstract
  In present research, the interaction between single liquid droplet with particles inside a porous media is investigated numerically in two dimensions. The He’s model is used to simulate two phase flow and multiple relaxation time collision operator is implemented to increase numerical stability. ...  Read More

Aerospace Science and Technology
Three-Axis Satellite Attitude Control with Fractional-Order PID Controller in the presence of Uncertainty and Disturbance

Amir reza Kosari; Elahe Khatoonabadi; Vahid Bohlouri

Articles in Press, Accepted Manuscript, Available Online from 13 April 2022

https://doi.org/10.22034/jast.2022.321251.1109

Abstract
  In this paper, the control of a three-axis rigid satellite attitude control system with a fractional order proportional-integral-derivative (PID) controller is investigated in the presence of disturbance and parametric uncertainties. The reaction wheel actuator with the first-order dynamic model is used ...  Read More

Aerospace Science and Technology
Meta-model Based Simulation in Multidisciplinary Design Optimization of a Space Transportation System

Hassan Naseh; Mehran Dr. MirShams; Hamid Reza Fazeley

Articles in Press, Accepted Manuscript, Available Online from 29 May 2022

https://doi.org/10.22034/jast.2022.329569.1115

Abstract
  Recently, engineering systems are quite large and complicated. Conceptual design process of Space Transportation Systems (STSs) is a multidisciplinary task which must take into account interactions of various disciplines and analysis codes. Current approach for the conceptual design of STSs requires ...  Read More

Aerospace Science and Technology
Aerodynamic study of a vertical wind turbine to produce power and ventilation in urban regions – the case study: City of Zahedan

seyed sam Saham; Saeed Karimian Aliabadi

Articles in Press, Accepted Manuscript, Available Online from 29 May 2022

https://doi.org/10.22034/jast.2022.315321.1106

Abstract
  The use of urban and rural scale wind turbines that in addition to generating power can play the role of old wind turbines in arid areas will be very attractive. In this research it has been tried to first evaluate the wind energy potential in Zahedan city and then to evaluate a sample of vertical axis ...  Read More

Aerospace Science and Technology
Numerical study of flow visualization and thermal performance for pulsating heat pipes

Sam Mohamad Hassan Pouryoussefi; غلامحسین پوریوسفی

Articles in Press, Accepted Manuscript, Available Online from 12 July 2022

https://doi.org/10.22034/jast.2022.346070.1119

Abstract
  Importance of study of pulsating heat pipes (PHPs) behavior and limitations in conducting experimental studies, the necessity of numerical simulations is getting critical in this area. In present work, numerical simulations are carried out for pulsating heat pipes. Thermal performance of closed loop ...  Read More

Aerospace Science and Technology
Numerical Investigation of Aerodynamic Performance of Planar/grid Stabilizer wings at Downstream Control Surface in Transonic Flow Regime

miralam mahdi; Amir rahni

Articles in Press, Accepted Manuscript, Available Online from 12 August 2022

https://doi.org/10.22034/jast.2022.245863.1033

Abstract
  In multi-stage Missiles, stabilizer wings are responsible for stabilizing the Missile. The control fins located upstream of the stabilizer wings affect the flow by spinning, which influences stability as well as control. One method for resolving this problem is to design stabilizer wings with less affectability ...  Read More

Aerospace Science and Technology
Three Dimensional Robust Guidance Law for Reaching Maneuvering Targets Based on Finite-Time Sliding Mode Control

Seyyed S moosapour; Amin Keyvan

Articles in Press, Accepted Manuscript, Available Online from 29 August 2022

https://doi.org/10.22034/jast.2022.295270.1081

Abstract
  This paper provides an academic insight into the design of a three-dimensional guidance law which can be utilized to reach the maneuvering targets in definite angles. Firstly, the theoretical phenomenon of a conventional dynamic inversion which can be implemented for reaching targets with constant velocity ...  Read More

Aerospace Science and Technology
Numerical simulation of combustion with the aim of obtaining temperature distribution, identifying and eliminating power reduction factors of a gas turbine engine

Hamed Arhami; Mohammad Mazidi Sharfabadi

Articles in Press, Accepted Manuscript, Available Online from 31 August 2022

https://doi.org/10.22034/jast.2022.302883.1097

Abstract
  In this research, combustion modeling inside the combustion chamber of a typical turboprop engine has been investigated. The complex geometry of this combustion liner was modeled according to the technical drawings and the turbulent flow and internal combustion were simulated numerically and three-dimensionally. ...  Read More