1. A Novel System-Level Calibration Method for Gimballed Platform IMU Using Optimal Estimation

Darwish Alshaddadi; M.H. Arvan; A.R. Vali

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  An accurate calibration of inertial measurement unit errors is increasingly important as the inertial navigation system requirements become more stringent. Developing calibration methods that use as less as possible of IMU signals has         ...  Read More

2. An Experimental Investigation of the Effects of Canard Position on the Aerodynamic Forces of a Fighter Type Configuration Model

M. Manshadi; A. Sharafi; M.H. Soltani

Volume 9, Issue 2 , Summer and Autumn 2012, Pages 15-24

Abstract
  An extensive experimental investigation is conducted to study the effect of canard position relative to the fuselage reference line on the aerodynamic forces of a fighter type configuration model. Aerodynamic forces at different flight conditions are measured in a subsonic wind tunnel. The wing and the ...  Read More

3. Approximate Solution of Sensitivity Matrix of Required Velocity Using Piecewise Linear Gravity Assumption

S.H. Jalali Naini

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  In this paper, an approximate solution of sensitivity matrix of required velocity with final velocity constraint is derived using a piecewise linear gravity assumption. The total flight time is also fixed for the problem. Simulation results show the accuracy of the method. Increasing the midway points ...  Read More

4. Intelligent Auto pilot Design for a Nonlinear Model of an Autonomous Helicopter by Adaptive Emotional Approach

Abolfazl Mokhtari; A.A. Nikkhah; Mahdi Sabze Parvar; A.R. Novinzadeh

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  There is a growing interest in the modeling and control of model helicopters using nonlinear dynamic models and nonlinear control. Application of a new intelligent control approach called Brain Emotional Learning Based Intelligent Controller (BELBIC) to design autopilot for an autonomous helicopter is ...  Read More

5. The Utilization of High Fidelity Simulation in the Support of UAV Launch Phase Design: Three Case Studies

M. Mortazavi; A. Askari

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  Improvement of the launch phase of a jet powered Unmanned Aerial Vehicle (UAV) with Jet Assisted Take Off (JATO), has been the subject of attention in the UAV industry. Use of flight simulation tools reduces the risk and required some amount of flight testing for complex aerospace systems. Full nonlinear ...  Read More

6. Parametric Study of the Empty and Foam-Filled End-Capped Conical Tubes under quasi Static and Dynamic impact Loads

Ali Ghamarian; H.R. Zarei

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  This paper investigates the parametric study of the empty and foam-filled end-capped tubes under quasi static and dynamic loadings. The numerical crash analysis of the empty and foam-filled tubes was performed using the explicit finite element code ABAQUS- explicit. Satisfactory agreements were generally ...  Read More

7. Novel Radial Basis Function Neural Networks based on Probabilistic Evolutionary and Gaussian Mixture Model for Satellites Optimum Selection

M. saraf; M.R. Mosavi; K. Mohammadi

Volume 9, Issue 2 , Summer and Autumn 2012

Abstract
  In this study, two novel learning algorithms have been applied on Radial Basis Function Neural Network (RBFNN) to approximate the functions with high non-linear order. The Probabilistic Evolutionary (PE) and Gaussian Mixture Model (GMM) techniques are proposed to significantly minimize the error functions. ...  Read More