Volume 16 (2023)
Volume 15 (2022)
Volume 14 (2021)
Volume 13 (2020)
Volume 12 (2019)
Volume 11 (2018)
Volume 10 (2017)
Volume 9 (2016)
Volume 8 (2015)
Volume 7 (2014)
Volume 6 (2013)
Volume 5 (2012)
Volume 4 (2011)
Volume 3 (2010)
Volume 2 (2009)
Volume 1 (2008)
Space Science and Technology
Optimized Dimension Design of Catalytic Chamber of a 10 N Thruster

Hadiseh Karimaei; Hadiseh Karimaei; Mohammad Reza Salimi; Hassan Naseh

Articles in Press, Accepted Manuscript, Available Online from 21 September 2021

  In this paper, the catalyst bed of a 10 N hydrazine monopropellant thruster was designed. The catalyst bed is including iridium granules, which is used to decompose the hydrazine in monopropellant thruster. Hydrazine must be decomposed almost completely in the catalytic chamber, because it is a carcinogenic ...  Read More

Space Science and Technology
Numerical study on the effects of nozzle geometry and creating swirly flow inside the injector nozzle on the performance of an engine

Amirhamzeh Farajollahi; Reza Firuzi; Mohammad Reza Salimi; Mohsen Rostami

Volume 15, Issue 4 , January 2023, , Pages 115-130

  In this study, the effects of geometry and spiral rifling like guides inside the injection nozzle on the performance of an engine are investigated, using AVL Fire software. To do so, firstly injectors with different nozzle geometries and their resultant spray patterns were simulated. Numerical results ...  Read More

Space Science and Technology
Strap-On Boosters Separation Analysis Using Coupled Simulation of Constraint Dynamics and Time Dependent CFD

Mostafa Jafari; Alireza Toloei

Volume 15, English Special Issue , May 2022, , Pages 35-45

  A numerical dynamic-aerodynamic interface for simulating the separation dynamics of constrained strap-on boosters jettisoned in the atmosphere is presented. Two commercial solvers: a 6DOF multi-body dynamic solver and a numerical time-dependent flow solver are integrated together with an interface code ...  Read More

Space Science and Technology
Effects of geometrical parameters of a two-sided catalyst bed on flow and thermal fields of a monopropellant hydrazine thruster

Mohammad Reza Salimi

Volume 15, Issue 1 , March 2022, , Pages 93-110

  In present study, a hydrazine based monopropellant thruster decomposition chamber is simulated numerically. The catalyst bed separated in two sides, the particles size in upstream side is larger than those in downstream side. Effects of upstream side length and its particles diameter on catalyst bed ...  Read More

Space Science and Technology
مدل سازی تلاطم در فضاپیما با استفاده از مدل توپ پالسی متحرک

Mohmmad Navabi; Ahmad Ebrahimi

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

  تلاطم در مخازن فضاپیما در حین انجام مانور مداری اثرات نامطلوبی دارد. بنابراین با توجه اهمیت مانور مداری صحیح برای رسیدن به مدار هدف، باید قبل از انجام مانورهای مداری ...  Read More

Space Science and Technology
Optimal Placement of Piezoelectric Sensor/Actuator Patches on Sandwich Panels Considering Debonding Effects

Mohammad Hossein Tirandaz; Milad َAzimi

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

  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

Space Science and Technology
Prediction of droplet size and velocity distribution based on maximum entropy formulation by nonlinear instability analysis of liquid sheet spray and turbulent of nozzle flow

Fathollah Ommi; Dooman Poorrajab Sufinai; Davood Doomiri Ganji; Seyed Hossein Moosavi

Volume 13, Issue 1 , April 2020, , Pages 1-11

  In this research, it is attempted to determine the diameter and velocity distribution according to the flow characteristics of the upstream and without needing experimental measurements.Firstly, Fluent software has been used to simulate the turbulent flow of inside nozzle by k-? model to obtain the nozzle ...  Read More

Space Science and Technology
Dynamic & Non-linear Modelling of an Expansion Cycle Rocket Engine

Mohammad Amin Eskandari; Hasan Karimi; Davood Ramesh; Mohammda Reza Alikhani

Volume 13, Issue 1 , April 2020, , Pages 39-48

  Expansion cycle rocket engines have unintelligible and sensitive dynamic behavior. Contrary to other types of rocket engine which have gas generator, Expansion cycle rocket engines utilizes mass flow of fuel propellant to provide power for rotating turbo pump. Which contributes to a complicated and difficult ...  Read More

Space Science and Technology
Performance Analysis of FMC Actuators to Microsatellite Temperature Management Based on 3-Axis and Pyramidal Configuration

Mehran Nosratollahi; Ahmad Soleimani

Volume 13, Issue 1 , April 2020, , Pages 49-60

  In this paper, the performance of fluid momentum controller (FMC) actuators in satellite temperature management is investigated based on two pyramidal and 3-axis proposed configurations. In this regard, the temperature of different satellite surfaces with fluid actuators and without actuators in an orbital ...  Read More