High Speed Electric Actuator Designs for Improved Air Intake

2007 ◽  
Author(s):  
Loussert Guillaume ◽  
Angleviel Didier ◽  
Biwersi Stéphane ◽  
Andrieux Gaël
Keyword(s):  
High Speed ◽  
Electric Actuator ◽  
Air Intake

A Research for Angle Optimization of the SRM Used in Electric Actuator of Valves

2013 ◽  
Vol 404 ◽  
pp. 586-591
Author(s):  
Ding Hong Yang Yang ◽  
Dean Zhao ◽  
Ying Xin Jiang
Keyword(s):  
High Speed ◽  
Position Control ◽  
Experimental Testing ◽  
Optimal Switching ◽  
Switched Reluctance ◽  
Electric Actuator ◽  
Turn On ◽  
Reluctance Motor ◽  
Two Parameters ◽  
Theory Research

This paper uses TMS320F28335 DSP and MAX3032S CPLD as the controller of the 6/4 pole switched reluctance motor (SRM), and controls the motor by the method of current chopping control (CCC) in low speed and the method of angle position control (APC) in high speed. About the optimization of turn-on angle and turn-off angle when SRM is controlled by the method of APC, this paper discusses the optimal design of the two parameters by ways of theory research, simulation and experimental testing. The results show optimal switching angle can make speeded-up of the motor better and improve the performance of SRM.

Mixed Compression Air-Intake Design for High-Speed Transportation

2021 ◽  
pp. 139-162
Author(s):  
Can Çıtak ◽  
Tekin Aksu ◽  
Özgür Harputlu ◽  
Gerhard-Wilhelm Weber
Keyword(s):  
High Speed ◽  
Air Intake

Flow Characteristics on the Chute with a Concave Surface Influenced by the Air Intake of the Aerator

2011 ◽  
Vol 90-93 ◽  
pp. 2559-2563 ◽  
Author(s):  
Yi Min Xu ◽  
Hong Xuan Yang ◽  
Wei Zhao ◽  
Chun Ying Shen
Keyword(s):  
High Speed ◽  
Cavity Length ◽  
Flow Characteristics ◽  
Air Pressure ◽  
Concave Surface ◽  
Cavity Size ◽  
Jet Trajectory ◽  
Air Intake ◽  
Trajectory Equation ◽  
High Speed Flows

The flow characteristics of an aerator inserted on the chute with a concave surface is more complex than that of on the straight chute. The area of the air intake of the aerator is a very important factor which influences the cavity size of jet flow after the aerator, the air pressure in the cavity and air concentrations in high-speed flows along the chute. The present project focused on the air intake of an aerator inserted on a model chute with a concave surface. How the area of the air intake of the aerator and the radius of chute arc affect flow characteristics are investigated. The air pressure in the cavity was indirectly derived from the jet trajectory equation. It is demonstrated that the cavity length increases with, and the air pressure in it decreases with the increasing of the air intake area at first, and then it remains unchangeable for a discharge even though the air intake area continues to increase.

Evaluation of applicability of various turbulence models for investigation of high-speed flows in air intakes

2021 ◽  
Author(s):  
E.S. Studennikov
Keyword(s):  
Mach Number ◽  
High Speed ◽  
Free Stream ◽  
Stokes Equations ◽  
Turbulence Models ◽  
Problem Solution ◽  
Wave System ◽  
External Compression ◽  
Air Intake ◽  
Free Stream Mach Number

The study focuses on the problem of optimization of the shock wave system which implements the maximum total pressure. Relying on the problem solution, we selected the configuration of a supersonic air intake of external compression and carried out numerical simulation of the flow in the air intake in flight conditions with the free-stream Mach number equal to 7.5 using the ideal gas model for calculations. The system of Favre-averaged Navier — Stokes equations was supplemented by one of the turbulence models: Spalart — Allmaras model, k–ε, k–ω, and γ–Reθ. The paper deals with both two-dimensional and three-dimensional configurations of the air input and studies the influence of angles of attack, wall temperature, and free-stream Mach number on the flow characteristics. Within the research, we determined the ranges of Mach numbers corresponding to the starting mode of the air intake and described the hysteresis of characteristics at the transition of the air intake to the start-up mode for various turbulence models.

Features of internal and external flows in high-speed vehicles with a magnetohydrodynamic air-intake

2007 ◽  
Vol 42 (5) ◽  
pp. 828-843 ◽  
Author(s):  
L. V. Bezgin ◽  
A. B. Vatazhin ◽  
O. V. Gus’kov ◽  
M. K. Danilov ◽  
V. I. Kopchenov
Keyword(s):  
High Speed ◽  
Air Intake ◽  
External Flows

scholarly journals New method for designing high-speed axisymmetric air intake

2021 ◽  
Author(s):  
D. A. Vnuchkov ◽  
V. M. Galkin ◽  
V. M. Fomin ◽  
V. I. Zvegintsev
Keyword(s):  
High Speed ◽  
New Method ◽  
Air Intake
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