Scientific extension Space Engineering/Space Orbit Mechanics/Space Sciences/...
Challenges of Asteroid Mining from Techno-economic and Legal Points of View

Ebrahim Amiri; Mahdi Jafari Nadoushan

Volume 5, Issue 1 , May 2021, Pages 1-13

https://doi.org/10.22034/jtae.2021.129739

Abstract
  In this paper, the potential capacity of asteroids to provide minerals is investigated from technical, economic, and legal points of view. To this end, Near-Earth Asteroids, which are more accessible, are considered as asteroid mining candidates. Reviewing technical issues, as well as economic evaluations ...  Read More

Research Article Propulsion/Thermodynamics/Heat Transfer/Fuel and Combustion/Energy/...
Effects of Blowing Correction Factor on Convection Heat Transfer Coefficient in Thermal Insulators Modeling

Zaheer Sabohi; Mohammad Razmjooei

Volume 5, Issue 1 , May 2021, Pages 15-28

https://doi.org/10.22034/jtae.2021.129746

Abstract
  This paper investigates the heat transfers and ablation of thermal insulators used in motors and nozzles. The heat and mass transfer equations are considered in two dimensions in a convergent-divergent nozzle. The finite volume method and the implicit method for time dependence have been used to solve ...  Read More

Scientific extension Space Engineering/Space Orbit Mechanics/Space Sciences/...
Drag Sail Conceptual Design for Satellite Orbit Reduction in Low Earth Orbit

Ali Kasiri; Farhad Fani saberi; Rojin Shokri khanghah

Volume 5, Issue 1 , May 2021, Pages 29-43

https://doi.org/10.22034/jtae.2021.129748

Abstract
  The main purpose of this paper is to provide a regular design process of drag sail for deorbiting a satellite in LEO orbit concerning the mission requirements. In this regard, the design requirements and manufacturing considerations of the drag sail have been studied at first. The paper continued with ...  Read More

Research Article Structure/Solid Mechanics/Solid Dynamics/Vibrations/Aeroelasticity/...
Vibration Suppression of a Maneuvering Flexible Spacecraft with Actuator Dynamic

Milad Azimi; Samad Moradi

Volume 5, Issue 1 , May 2021, Pages 45-56

https://doi.org/10.22034/jtae.2021.129873

Abstract
  This paper presents a study concerning active vibration control of a smart, flexible spacecraft during attitude maneuver using thrusters/ a reaction wheel and piezoelectric patches. The large-angle maneuver and residual vibration of the spacecraft are controlled utilizing an extended Lyapunov-based design ...  Read More

Research Article Propulsion/Thermodynamics/Heat Transfer/Fuel and Combustion/Energy/...
Study of Emitted Sound of a Gas Turbine Model Combustor When Flame Adheres to Burner Head

Amir Matdani; Amir Aghabeigi; Hosna Bahonar

Volume 5, Issue 1 , May 2021, Pages 57-65

https://doi.org/10.22034/jtae.2021.129744

Abstract
  Experimental and numerical analysis of a gas turbine model combustor is performed for two cases of regular operation, and attached flow (Coanda jet). The flame shape is visualized experimentally to reveal the differences in the flame structure of the two casesThe combustor sound frequency is measured ...  Read More

Research Article Methods and Tools: Computational (CFD)/Measurement (Experimental)/Analytical (Mathematical)/...
Three-Dimensional Lbm Simulation of Oscillations of a Pendent ‎Growing Drop‎

Shahram Ghorbanifar; M. Taeibi Rahni; M. Zareh

Volume 5, Issue 1 , May 2021, Pages 67-77

https://doi.org/10.22034/jtae.2021.135091

Abstract
  In this work, the force-displacement equation and non-linear three-dimensional oscillations of a pendant drop are investigated numerically. The presented novel force-displacement function allows following the dynamics of a pendant drop and realizing its elastic behavior. The growth and detachment of ...  Read More