An intensive experimental investigation was conducted to study the effect of vertical tail, single and twin (with different cant angles) on the flow field and the corresponding aerodynamic forces and moments of a model of a fighter A/C. Aerodynamic forces under different flight conditions and different vertical tail settings were measured in a supersonic wind tunnel. Furthermore, effects of ver...

Background: It has been estimated that 67 million people worldwide are affected with a primary glaucoma and that one-third have primary angle closure glaucoma. We aimed to determine the biometric differences between the eyes of patients with acute attack of primary angle closure and their non-involved fellow eyes. Methods: Twenty eight patients with acute attack of primary angle closure were re...

An intensive experimental investigation was conducted to study the effect of vertical tail, single and twin (with different cant angles) on the flow field and the corresponding aerodynamic forces and moments of a model of a fighter A/C. Aerodynamic forces under different flight conditions and different vertical tail settings were measured in a supersonic wind tunnel. Furthermore, effects of ver...

Open AccessEngineering NotesModel-Free Scheme for Angle-of-Attack and Angle-of-Sideslip EstimationAngelo Lerro, Alberto Brandl Piero GiliAngelo LerroPolytechnic University of Turin, 10129 Italy*Assistant Professor, Department Mechanical Aerospace Engineering, C.so Duca degli Abruzzi 24; .Search more papers by this author, BrandlPolytechnic Italy†Research Assistant, author GiliPolytechnic Italy‡...

Abstract The angle of attack and side-slip are two important flight parameters that directly affect the safety civil aircraft. This paper studies estimation method for according to air-data system, inertial navigation aircraft aerodynamic data improve under condition icing, failures, improper maintenance. Flight tests show proposed is feasible, reliable, has better accuracy. Furthermore, test a...

A linear vortex panel method is extended to include the effect Abstract of ground proximity on the aerodynamic properties of two dimensional airfoils. The image method is used to model the ground effect . According to the results, lift coefficient of an airfoil may increase or decrease in ground effect based on a combinative effect of its camber, thickness, angle of attack and ground clearance....

The flow behavior around a cam shaped tube in cross flow has been investigated experimentally using flow visualization and pressure distribution measurement. The range of attack angle and Reynolds number based on an equivalent circular diameter are within 0 ≤ α ≤ 360˚ and 2 x 104 < Reeq < 3.4 x 104, respectively. The pressure drag features are clarified in relation to the flow behavior around t...