Original Article Control dynamics
Experimental Identification of Satellite Antenna Dynamics

Ehsan Maani miandoab; Ehsan Zabihian; Hossein Najafi

Volume 1, Issue 1 , September 2021, Pages 1-12


  In all types of satellites, communication systems are utilized for data transmission between satellite and ground stations. pointing the communication antennas to the ground is necessary for the correct mission transmission information. The vibration of the satellite antenna leads to deforming antenna ...  Read More

Original Article Power Electronics
Lifetime Improvement Using Task Scheduling in Hard Real-Time Systems Equipped with Environmental Energy Harvester and Hybrid Energy Storage

Mahmoud Hasanloo; Mahdi Kargahi; Shahrokh Jalilian

Volume 1, Issue 1 , September 2021, Pages 13-24


  In this paper, we investigate the effect of task scheduling on the lifetime of a real- time hard drive system that uses a composite energy tank consisting of a battery, a super capacitor, and a solar energy picker to power supply itself. The lifetime of a system in this document is the moment the system ...  Read More

Original Article Structure
Effect of Plasma Nitriding Treatment on the Chromium Layer Applied on Space Structure to Avoid Cold Weld

Arvin Taghizadeh Tabrizi; Hossein Aghajani; Farhad Farhang Laleh

Volume 1, Issue 1 , September 2021, Pages 25-35


  Although regarding low density and high ratio of strength to weight of titanium, the application of this metal is restricted in space industry due to its low surface properties including low wear resistance which could lead to the cold weld. For improving this property of titanium, applying protective ...  Read More

Original Article Propulsion
System Design of Resistojet Thruster for Space Application

seyed alireza Jalali chimeh; Ali Madadi; seyed mostafa safavi homami; javad Emami

Volume 1, Issue 1 , September 2021, Pages 36-52


  In complicated systems such as satellites, each subsystem's design can affect the design of the overall system. In the design procedure, the effect of each technology on the other components should be determined. Because of increasing in space trash, the propulsion subsystems are introduced to avoid ...  Read More

Original Article Flight dynamics
Imaged Based Earth Horizon Sensor with no Altitude Information

Behrooz Raeisy; Fatemeh Ghofrani

Volume 1, Issue 1 , September 2021, Pages 53-64


  Various sensors can be used to attitude determination of a satellite, including the Earth Horizon Sensor. These sensors generally divided into two types: static and scanning types. In the static type, two- dimensional array or several linear arrays capture instantly the Earth image information to attitude ...  Read More

Original Article Structure
Optimum Design of a Microsatellite Structure with Vibration Constraint

mohamad bagher bahrami

Volume 1, Issue 1 , September 2021, Pages 65-80


  One of the most critical design points in satellites is to achieve the minimum mass (weight) by meeting all the requirements and constraints (strength, location and vibration). In this regard, the structure can play a very important role because the structural designer has more freedom of action in determining ...  Read More

Original Article Structure
Investigating the Effect of Equiaxed and Lamellar Microstructure on Critical Damage of Ti-6Al-4V in Isothermal Compression of Grooved Double-Cone Specimens

S. Javid Mirahmadi; Mohsen Hamedi; Maedeh sadat Zoei

Volume 1, Issue 1 , September 2021, Pages 81-91


  Ti-6Al-4V is one of the most common materials in the aerospace industry. For example, satellite fuel tanks are made of this alloy. Among manufacturing processes, forming processes is one of the most widely used areas in the manufacture of Ti-6Al-4V components. Due to the importance of determining the ...  Read More

Original Article Computer
Lifetime Enhancement of Embedded Systems During Task Scheduling Through a Multi-Objective Particle Swarm Optimization Approach

Athena Abdi; shahrokh jalilian

Volume 1, Issue 1 , September 2021, Pages 92-107


  In this paper, a task scheduling and mapping method based on multi-objective particle swarm optimization (MOPSO) algorithm is presented to improve lifetime reliability of multiprocessors systems on chip. This method considers power consumption temperature and performance along with the lifetime reliability ...  Read More

Original Article Propulsion
Conceptual Design of Microwave Electrothermal Thruster of Satellite

Sahar noori; Rojin Shokri Khanghah; mohammad nadafipour meibody

Volume 1, Issue 1 , September 2021, Pages 108-125


  Microwave electrothermal thruster is the propellant that converts microwave energy into heat energy. nowadays, with the technology development of electric thrusters are very important in terms of producing high specific impact and low fuel consumption. These thrusters can produce acceptable thrust over ...  Read More

Original Article Structure
Investigation of Atomic Oxygen Corrosion of Satellite Components Coating Under Equivalent LEO Orbit Conditions

Maedeh sadat Zoei; hadi gorabi; mohammadreza asharf khorasani; saeed asghari; S. Javid Mirahmadi

Volume 1, Issue 1 , September 2021, Pages 126-135


  Space systems in Low Earth Orbit (LEO) expose to the destructive parameter of atomic oxygen. In long-term missions, the rate of degradation of the material resulting from the reaction with atomic oxygen is significant and reduces the performance of the structure. Due to the harmful effects of atomic ...  Read More