In-Trim Flight Investigations of a Conceptual Fluidic Thrust-Vectored Unmanned Tail-Sitter Aircraft

fariborz saghafi

Volume 3, Issue 3 , September 2006, Pages 125-133

Abstract
  The feasibility of using a stand alone Fluidic Thrust-Vectoring (FTV) system for the purpose of longitudinal trim of an unmanned aerial vehicle is the focus of the research presented in this paper. Since the fluidic thrust vectoring requires high pressure secondary air to deflect the engine exhaust gases, ...  Read More

COMPARISON BETWEEN MINIMUM AND NEAR MINIMUM TIME OPTIMAL CONTROL OF A FLEXIBLE SLEWING SPACECRAFT

Aliakbar Dr. Moosavian

Volume 3, Issue 3 , September 2006, Pages 135-142

Abstract
  In this paper, a minimum and near-minimum time optimal control laws are developed and compared for a rigid space platform with flexible links during an orientating maneuver with large angle of rotation. The control commands are considered as typical bang-bang with multiple symmetrical switches, the time ...  Read More

Robust Integral Sliding-Mode Control of an Aerospace Launch Vehicle
Volume 3, Issue 3 , September 2006, Pages 143-149

Abstract
  An analysis of on-line autonomous robust tracking controller based on variable structure control is presented for an aerospace launch vehicle. Decentralized sliding-mode controller is designed to achieve the decoupled asymptotic tracking of guidance commands upon plant uncertainties and external disturbances. ...  Read More

NORMAL FORM SOLUTION OF REDUCED ORDER OSCILLATING SYSTEMS

Ahmad Dr. Sedaghat

Volume 3, Issue 3 , September 2006, Pages 153-158

Abstract
  This paper describes a preliminary investigation into the use of normal form theory for modelling large non-linear dynamical systems. Limit cycle oscillations are determined for simple two-degree-of-freedom double pendulum systems. The double pendulum system is reduced into its centre manifold before ...  Read More