Dynamic Stability of Step Beam Carrying Concentrated Masses under Follower Force

M. Sohrabian

Volume 4, Issue 4 , December 2007, Pages 1-6

  This paper investigates the dynamical behavior of an assembled beam like structure with tip masses modeling a two stage space rocket structure. The beam like structure is composed of two beams connected together carrying two masses at the free ends to model the payload, and the stabilizing fins mass ...  Read More


Mehdi Sharifyazdi

Volume 4, Issue 4 , December 2007, Pages 19-27

  To formulate a single-leg seat inventory control problem in an airline ticket sales system, the concept and techniques of revenue management are applied in this research. In this model, it is assumed the cabin capacity is stochastic and hence its exact size cannot be forecasted in advance, at the time ...  Read More

Dynamics of Space Free-Flying Robots with Flexible Appendages

A. Ebrahimi; Aliakbar Dr. Moosavian

Volume 4, Issue 4 , December 2007, Pages 29-36

  A Space Free-Flying Robot (SFFR) includes an actuated base equipped with one or more manipulators to perform on-orbit missions. Distinct from fixed-based manipulators, the spacecraft (base) of a SFFR responds to dynamic reaction forces due to manipulator motions. In order to control such a system, it ...  Read More

Automatic Landing of Small Helicopters on 4 DOF Moving Platforms

fariborz saghafi

Volume 4, Issue 4 , December 2007, Pages 37-46

  In this research, an automatic control system is designed for landing of a small helicopter on a 4 DOF moving platform. The platform has three translational and one directional degree of freedom. The controller design approach is based on development of helicopter nonlinear dynamic model into the SDC ...  Read More