Scientific extension
Improved Guidance Law Design in Presence of Actuator Dynamic via Back-stepping Approach

Ali Yousefpour; Valiollah Ghaffari

Volume 4, Issue 2 , August 2020, Pages 10-1

Abstract
  This paper concerns on guidance law design by considering of the actuator effect. For achieving this goal, the proportional guidance (PN) method would be modified via the back-stepping approach such that the closed-loop stability is guaranteed in the presence of the actuator dynamic. Thus, it is interested ...  Read More

Scientific extension
Review of Bilevel Optimization Approaches and Applications in Aerospace Engineering

Seyed Mohammad Bagher Malaek; Hoda Moaddab

Volume 4, Issue 2 , August 2020, Pages 26-11

Abstract
  Bilevel optimization is proposed when the objective problem has two decision makers with different hierarchies. In such cases, the lower level decision is embedded within the higher-level constraints. Micro and macro decision making of transportation are considered as hierarchal problems, On the one ...  Read More

Research Note
Study of the Effect of Air Suction on Separation Bubble in a Flow Field around a Rectangular Cylinder

Saeed Kavousfar; Amir Rostami

Volume 4, Issue 2 , August 2020, Pages 34-27

Abstract
  In this paper, the flow field around a two-dimensional rectangular cylinder was numerically simulated and the effects of the flow suction on the separation bubble were investigated. The purpose was to estimate the effect of suction on the dimensions of the separation bubble. The flow field was assumed ...  Read More

Scientific extension
Transparent Antenna Technology and Its Application in Space

Negin Kourosdari; Zahra Shaterian; Ali Karami Horestani

Volume 4, Issue 2 , August 2020, Pages 44-35

Abstract
  This paper is focused on the application of transparent antennas to address the issues related to the unpleasant appearance and non-aerodynamic behavior of traditional antennas. Transparent antennas are divided in two main categories. In the first category, the resonant structure and the ground plane ...  Read More

Scientific extension
Challenges and Opportunities of Drone Development in Iran

Hamid Kazemi; Samaneh Elahian

Volume 4, Issue 2 , August 2020, Pages 64-45

Abstract
  Increasing the rate of drone's usage growth, improvement of infrastructure needed for drone's development by governmental investment, vast and diverse applications and good outcome of the technology depicts special situation for this technology in the future. Moreover, special structural characteristics ...  Read More

Scientific extension
Investigation of DME/DME as an Appropriate Backup for GNSS Systems in Iranian Airports

Mohsen Kazemi; Zahra Hamidzadeh Delarzi; Mohammad Rashtian

Volume 4, Issue 2 , August 2020, Pages 80-65

Abstract
  Today, all world's aviation organizations, including ICAO, are looking for solutions to airspace shortage, growth of global air traffic, and safety of flights. Performance based navigation (PBN), which is a transition from System-Base to Performance-Base Navigation is a solution that can improve the ...  Read More