Incremental Predictive Command of Velocity to Be Gained Guidance Method

Nematollah Ghahramani; Abolqasem Naghash; Farzad Towhidkhah

Volume 5, Issue 3 , July 2008, Pages 99-105

Abstract
  In this paper, a new incremental predictive guidance method based on implicit form of velocity to be gained algorithm is proposed. In this approach, the generalized incremental predictive control (GIPC) approach is applied to the linearized model for compensating the guidance error. Instead of using ...  Read More

Gravity-Compensated Robust Control for Micro-Macro Space Manipulators During a Rest to Rest Maneuver

Mohammad J. Sadigh; Ali Salehi

Volume 5, Issue 3 , July 2008, Pages 107-113

Abstract
  Many space applications require robotic manipulators which have large workspace and are capable of precise motion. Micro-macro manipulators are considered as the best solution to this demand. Such systems consist of a long flexible arm and a short rigid arm. Kinematic redundancy and presence of unactuated ...  Read More

OPTIMUM DESIGN OF FILAMENT–WOUND LAMINATED CONICAL SHELLS FOR BUCKLING USING THE PENALTY FUNCTION

Mohammad Zaman Kabir; Arash Rojhani

Volume 5, Issue 3 , July 2008, Pages 115-121

Abstract
  Optimum laminate configuration for minimum weight of filament–wound laminated conical shells subject to buckling load constraint is investigated. In the case of a laminated conical shell the thickness and the ply orientation (the design variables) are functions of the shell coordinates, influencing ...  Read More

Aircraft Visual Identification by Neural Networks

fariborz saghafi; Seyed Mohammad Khansari Zadeh

Volume 5, Issue 3 , July 2008, Pages 123-128

Abstract
  In the present paper, an efficient method for three dimensional aircraft pattern recognition is introduced. In this method, a set of simple area based features extracted from silhouette of aerial vehicles are used to recognize an aircraft type from its optical or infrared images taken by a CCD camera ...  Read More

Vibration analysis of FGM cylindrical shells under various boundary conditions

reza ansari; M. Darvizeh; Milad Hemmatnezhad

Volume 5, Issue 3 , July 2008, Pages 129-138

Abstract
  In this paper, a unified analytical approach is proposed to investigate vibrational behavior of functionally graded shells. Theoretical formulation is established based on Sanders’ thin shell theory. The modal forms are assumed to have the axial dependency in the form of Fourier series whose derivatives ...  Read More

VISCOUS NUTATION DAMPER, MODELING AND ANALYSIS

hasan Abedi; M. Sohrabian

Volume 5, Issue 3 , July 2008, Pages 139-144

Abstract
  In some aerospace vehicles, the tracking sensors which act in a tracking loop as stabilizer are mounted on a two degree of freedom gyro. The gyro must align its rotor axis with the line of sight in order to remove tracking errors. The tracking precision and sensitivity are functions of the gyros performance. ...  Read More