Volume 7, Issue 2
مرور بر اساس
ارسال های اخیر
-
Improvement in Differential GPS Accuracy using Kalman Filter
(Iranian Aerospace Society, 2010-04-01)Global Positioning System (GPS) is proven to be an accurate positioning sensor. However, there are several sources of errors such as ionosphere and troposphere effects, satellite time errors, errors of orbit data, receivers ...
-
Wind Tunnel Investigation of Pressure Distribution and Transition Position of a Swept 3D Wing
(Iranian Aerospace Society, 2010-04-01)Extensive wind tunnel tests are conducted to evaluate surface pressure distribution of a semi span swept wing. The wing section has a laminar flow airfoil similar to NACA 6-series airfoils. The investigations are conducted ...
-
Numerical Predictions of Turbulent Mixed Convection Heat Transfer to Supercritical Fluids Using Various Low Reynolds Number k-e Turbulence Models
(Iranian Aerospace Society, 2010-04-01)There are a number of systems in which supercritical cryogenic fluids are used as coolants or propellant fluids. In some modern military aircraft, the fuel is pressurized above its critical point and used as a coolant to ...
-
Design of Nonlinear Robust Controller and Observer for Control of a Flexible Spacecraft
(Iranian Aerospace Society, 2010-04-01)Two robust nonlinear controllers along with a nonlinear observer have been developed in this study to control a 1D nonlinear flexible spacecraft. The first controller is based on dynamic inversion, while the second one is ...
-
Effects Of Frequency Variation At Inlet Flow On The Vortex Shedding Frequency Behind A Circular Cylinder
(Iranian Aerospace Society, 2010-04-01)In many applications the flow that past bluff bodies has frequency nature (oscillated) and it is not uniform. This kind of flow has effects on the formation of vortex shedding behind bluff bodies. In this paper the flow ...