Research Paper
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 , March 2020, Pages 1-11

Abstract
  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

Research Paper
System Design and Analysis of Launch Abort System of Manned Spacecraft in Sub-Orbital Mission

Nima Karimi; محمد علی فارسی

Volume 13, Issue 1 , March 2020, Pages 13-23

Abstract
  In the present paper, the process of designing launch abort system is presented for manned spacecraft in sub-orbital mission. For this purpose, by studying the other manned spacecraft launch abort system, a number of dimensionless parameters have been generated for the launch abort system and spacecraft. ...  Read More

Research Paper space law
The current framework of Space Law approach to commercial space activities: prescriptive or restrictive

s. Hadi Mahmoudi; Rohollah Rohami; Hamid Heidaree

Volume 13, Issue 1 , March 2020, Pages 25-38

Abstract
  By incorporating provisions in Space Law documents, gateway for commercial space activities was opened. From the era of space treaties, commercial uses always are getting faster Due to the increasing of players and development of new technologies. Although the current framework does not comply with the ...  Read More

Research Paper
Dynamic & Non-linear Modelling of an Expansion Cycle Rocket Engine

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

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

Abstract
  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

Research Paper
Performance Analysis of FMC Actuators to Microsatellite Temperature Management Based on 3-Axis and Pyramidal Configuration

Mehran Nosratollahi; Ahmad Soleimani

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

Abstract
  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

Research Paper
The comparison of the binding parameters of silver nanoparticles to DNA in gravity and microgravity conditions

Azadeh Hekmat; Bahar Hajati; Zahra Hajebrahimi

Volume 13, Issue 1 , March 2020, Pages 61-70

Abstract
  Amount of space exploration investigation has been done to understand the variations in biological structure and function of living organisms in microgravity condition. Nowadays, the investigation of the microgravity from a nanoscale viewpoint is encouraged. Silver nanoparticles have been involved in ...  Read More

Research Paper 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

Research Paper Space systems design (spacecraft, satellites, space stations and their equipment)
Presentation of a conceptual framework for the design of Chabahar strategic launch site for the development of Iran space industry

Meghdad Payan; Hanif Kazerooni

Volume 13, Issue 1 , March 2020, Pages 83-98

Abstract
  The need to stay in space and use its advantage in different perspectives, has led our country to take steps to use satellite technology. In this regard, constructing an advanced satellite launch site with all the modern facilities is one of the key issues. Imam Khomeini Space Center is the first permanent ...  Read More