EXPERIMENTAL INVESTIGATION OF STATIC PRESSURES ON THE UPPER SURFACE OF A PASSENGER AIRCRAFT MODEL AT QUASI-STEP-WISE VARIATIONS OF THE PITCH ANGLE IN SEPARATION FLOW REGIMES

2011 ◽  
Vol 42 (6) ◽  
pp. 845-851
Author(s):  
Evgueny Aleksandrovich Chasovnikov
Keyword(s):  
Experimental Investigation ◽  
Pitch Angle ◽  
Flow Regimes ◽  
Separation Flow ◽  
Aircraft Model ◽  
Passenger Aircraft

NUMERICAL AND EXPERIMENTAL INVESTIGATION OF AERODYNAMIC CHARACTERISTICS OF THE HYPERSONIC AIRCRAFT MODEL OF INTEGRATED CONFIGURATION

2013 ◽  
Vol 44 (1) ◽  
pp. 111-127
Author(s):  
Sergey Mikhailovich Zadonsky ◽  
Alexander Petrovich Kosykh ◽  
Garry Grantovich Nersesov ◽  
Iraida Fedorovna Chelysheva ◽  
Sergey Valer'evich Chernov ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Aerodynamic Characteristics ◽  
Aircraft Model ◽  
Hypersonic Aircraft

Experimental investigation into the effects of blade pitch angle and axial distance on the performance of a counter-rotating tidal turbine

2015 ◽  
Vol 110 ◽  
pp. 78-88 ◽  
Author(s):  
Xuesong Wei ◽  
Bin Huang ◽  
Pin Liu ◽  
Toshiaki Kanemoto ◽  
Leqin Wang
Keyword(s):  
Experimental Investigation ◽  
Pitch Angle ◽  
Axial Distance ◽  
Tidal Turbine ◽  
Blade Pitch Angle

Modelling and PID Control of a Quadrotor Aerial Robot

2014 ◽  
Vol 903 ◽  
pp. 327-331 ◽  
Author(s):  
Ismail Mohd Khairuddin ◽  
Anwar P.P.A. Majeed ◽  
Ann Lim ◽  
Jessnor Arif M. Jizat ◽  
Abdul Aziz Jaafar
Keyword(s):  
Pid Control ◽  
Pitch Angle ◽  
Pid Controller ◽  
Pd Controller ◽  
Proportional Integral Derivative ◽  
Hovering Flight ◽  
Proportional Integral ◽  
Aircraft Model ◽  
Aerial Robot ◽  
Aerial Vehicle

This paper elucidates the modeling of a + quadrotor configuration aerial vehicle and the design of its attitude and altitude controllers. The aircraft model consists of four fixed pitch angle propeller, each driven by an electric DC motor. The hovering flight of the quadrotor is governed by the Newton-Euler formulation. The attitude and altitude controls of the aircraft were regulated using heuristically tuned (Proportional-Integral-Derivative) PID controller. It was numerically simulated via Simulink that a PID controller was sufficient to bring the aircraft to the required altitude whereas the attitude of the vehicle is adequately controlled by a PD controller.

scholarly journals Experimental investigation of air–water, two-phase flow regimes in vertical mini pipe

2011 ◽  
Vol 18 (4) ◽  
pp. 923-929 ◽  
Author(s):  
P. Hanafizadeh ◽  
M.H. Saidi ◽  
A. Nouri Gheimasi ◽  
S. Ghanbarzadeh
Keyword(s):  
Experimental Investigation ◽  
Two Phase Flow ◽  
Flow Regimes ◽  
Phase Flow ◽  
Two Phase

Laser Transit Anemometry Investigation of a High Speed Centrifugal Compressor

1989 ◽  
Author(s):  
David Japikse ◽  
David M. Karon
Keyword(s):  
Experimental Investigation ◽  
Secondary Flow ◽  
Centrifugal Compressor ◽  
Turbulence Intensity ◽  
High Speed ◽  
Flow Regimes ◽  
Compressor Stage ◽  
Blade Passage ◽  
Centrifugal Compressor Stage

A detailed experimental investigation of a small centrifugal compressor stage has been completed using laser transit anemometry. Measurements at the inlet and discharge of an impeller have been made while recording data relative to a blade passage. Classical primary and secondary flow regimes within the rotor have been shown plus several compact “cell-like” regions. Various components of velocity and turbulence intensity are presented. This study has demonstrated the capability of using the laser transit anemometer for investigating the kinematics of small, high speed turbomachinery components.

Twin inclined jets in crossflow: experimental investigation of different flow regimes and jet elevations

2015 ◽  
Vol 16 (1) ◽  
pp. 45-67 ◽  
Author(s):  
A. Radhouane ◽  
N. Mahjoub Saïd ◽  
H. Mhiri ◽  
Ph. Bournot ◽  
G. Le Palec
Keyword(s):  
Experimental Investigation ◽  
Flow Regimes

Experimental Investigation of Mixing in a T-Channel for Asymmetric Inlet Conditions

2012 ◽  
Author(s):  
Manjunath Basavarajappa ◽  
John Elsnab ◽  
Susan Thomas ◽  
Timothy A. Ameel
Keyword(s):  
Experimental Investigation ◽  
Volumetric Flow Rate ◽  
Flow Regimes ◽  
Laser Induced Fluorescence ◽  
Flow Conditions ◽  
Inlet Channel ◽  
Outlet Channel ◽  
Channel Geometry ◽  
Planar Laser ◽  
Inlet Conditions

An experimental investigation of water flow in a rectangular T-channel with inner dimensions of 20 × 20 mm (inlet channel) and 20 × 40 mm (outlet mixing channel) has been conducted. The inlet Reynolds number Re, based on inlet hydraulic diameter, ranged from Re1 = 90 to 775. Inlet flow conditions were asymmetric, and inlet Re ratios of Re1/Re2 = 1.24, 1.65 and 2.45 were obtained by varying volumetric flow rate. Dynamical conditions and T-channel geometry are directly applicable to microscale mixing. Planar laser induced fluorescence (LIF) was used to characterize flow regimes and behaviors, including periodicity, in the inlet and outlet channels. Two distinct flow regimes were identified and characterized for asymmetric inlet Re. For low inlet Re, Re1 ≤ 150, and all Re1/Re2, flows were steady. For higher Re and all Re1/Re2, a jet flow regime, characterized by two counter rotating vortices and increasingly turbulent at higher Re dominated the flow in the junction. Qualitative mixing characteristics for all flow regimes, based on LIF visualizations in the outlet channel, are also presented.

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