Original Article Control dynamics
Experimental identification of satellite antenna dynamics

Ehsan Maani miandoab; Ehsan Zabihian; Hossein Najafi

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


  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 the deform 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 24-13


  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 supercapacitor, and a solar energy picker to power supply itself. The life of a system is defined in terms of the moment the system ...  Read More

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

Arvin Taghizadeh Tabrizi; Hossein Aghajani; Farhad Farhang Laleh

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


  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 52-36


  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 the increase 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 64-53


  Various sensors can be used to attitude determination of a satellite, including the Earth Horizon Sensor. These sensors generally divided into two static and scanning types. In the static type, a 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 80-65


  One of the most critical design points in satellites is to achieve the minimum mass (or weight) by meeting all the requirements and constraints (constraints on strength, location and pointing vibrations). In this regard, the structure can play a very important role because the structural designer has ...  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 91-81


  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 107-92


  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 125-108


  The microwave electrothermal thruster is the propellant that converts the microwave energy into thermal energy. Nowadays, with the development of technology, electric thrusters are very important in terms of producing high specific impact and low consumption. These thrusters are capable of producing ...  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 135-126


  Space systems in Low Earth Orbit (LEO) are exposed 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