MATHEMATICAL MODEL OF PROPELLER CONTROL SYSTEM


 Stanley Kerry Austin
 1 years ago
 Views:
Transcription
1 18 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation 2015 MATHEMATICAL MODEL OF PROPELLER CONTROL SYSTEM Jaroslav BRAŤKA 1 Jozef ZAKUCIA 2 Abstract: This contribution deals with the development of a dynamic mathematic model of an aircraft turboprop engine variable pitch propeller system. The presented model follows a real physical principle in which a hydromechanical governor regulates propeller speed by varying the pitch of the single acting propeller of pressure to decrease pitch type. They are considered both main operating modes of propulsion: speed control in range of forward thrust and control of the propeller pitch in reverse mode in which the pitch is controlled directly via position feedback. Model function verifying is presented as dynamic behavior in feedback loop compared with a record of real engine behavior. All model parameters are working with real physical units. The model was built in the Matlab Simulink program platform. The resulting model is applicable to all similar propeller systems commonly employed throughout the aerospace industry including ESPOSA engines BE1 and BE2. Keywords: Mathematical Model, Propeller Control System, Hydromechanical Propeller Governor 1. INTRODUCTION Historically, a hydromechanical constant speed governor has been employed in conjunction with a variable pitch propeller on free turbine turboprop engines. Presently, hydromechanical propeller speed governors are generally employed for turboprop engines with power rate up to 1000 kw. The hydromechanical propeller speed governor, which is analyzed in this contribution, in connection with single acting reversing propeller is schematically presented in Fig. 1. Figure 1 Propeller speed control system with hydromechanical governor This system works in two basic operational modes; so  called ALFA mode and BETA mode. In ALFA mode, a governor regulates propeller speed by continually varying the pitch of propeller blades to keep constant speed. The sensing element of the governor is a set of flyweights driven mechanically by reduction gearbox. Flyweights actuate the pilot valve, which in turn supplies hydraulic pressure to modulate the propeller pitch actuating mechanism. The movement of the flyweight is opposed by the force of an adjustable speeder spring. The load exerted by the speeder 1  Ing. Jaroslav Braťka, Aerospace Research and Test Establishment, Beranových 130 Praha Czech republic, 2  Ing. Jozef Zakucia, Aerospace Research and Test Establishment, Beranových 130 Praha Czech republic, T:
2 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation spring determines the required RPM. The beta valve serves as minimum flight pitch lock in this operational mode. In BETA mode, a propeller pitch is set in range below Inflightlowpitch only by the Beta Valve according to engine power. The reversing operation is controlled in the cockpit by the power lever and is initiated by moving it aft of the idle position. The power lever is linked to a propeller reverse lever thus the power lever adjusts both engine power and propeller blade angle. The pilot valve is disconnected by the 3way valve in this mode. 2. MATHEMATICAL MODEL The model was developed in the Matlab Simulink program platform and tasks are solved in physical units which is important for easier imagination of system behavior and comparison with real test data. Model inputs:  Nc, nc speed of propeller [RPM]  Nd, demanded propeller speed (in ALFA mode) [RPM]  X travel of beta lever (in BETA mode) [mm]  IFLP In flight low pitch [º]  Ps input oil pressure [MPa]  Re Reverse enable signal Model outputs:  β angle of propeller blade [º]  y travel of propeller actuator piston [mm]  Pv pressure in the actuator [MPa]  Qv oil flow [m 3 /hr] Mathematical models of each component are described with the aid of nonlinear onedimensional equations and steadystate components characteristics. The mathematical model comprises several algebraic loops for solution of flow through throttling elements. The system depicted on Fig. 1 was converted to a substitute hydraulic scheme Fig. 2, for purpose of modeling. Figure 2 Substitute hydraulic scheme 2.1 Speed sensor Function of a speed sensor is based on the force developed on the speeder spring due to the angular momentum of the rotating weights witch is equal to the square of speed. Result of forces comparison is movement in rotation axis. The speed sensor is expressed by formula: ^2 2, Where are: nc  flyweights rotation speed [1/min] m  mass of flyweights [kg] Rk  corrected radius of rotation [m] K  spring constant [N/m] Z  travel [m], (1)
3 20 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation Pilot valve The pilot valve is a hydraulic distributor actuated by the speed sensor. The valve directs boosted oil flow to or releasing oil from the propeller actuator according to its + or  position. Flow through throttle orifice is described by formula: Where: K R orifice coefficient S R flow crosssection [m 2] Ρ density [kg/m 3 ] P pressure difference [MPa] Considered travel of the pilot valve slider is ±2 mm and edges overlap 0,1 mm. 2.3 Beta valve The beta valve (also called a hydraulic lock) is a special valve which prevents a propeller from travel of blades to a position below the inflight lowpitch position in speed control (ALFA mode). Its slide is mechanically linked with the actuator piston and closes oil feeding into a hydraulic actuator and simultaneously opens release from an actuator in case the propeller pitch equals the inflight lowpitch. In the Beta Mode, the Beta Control Valve operated by the power lever linkage and directs oil pressure generated by the governor boost pump to the propeller actuator or relieves oil from the propeller to change the blade angle. The mechanical linkage between the actuator piston and the slide of beta valve (mechanical feedback loop) ensure proportional response to demand from the power lever. 2.4 Gear pump It was used standard characteristic of a gear pump described by function Qp = f(nc, pc). 2.5 Propeller hydraulic actuator It is used a single acting actuator in which sum of centrifugal force from counterweights, a spring and centrifugal twisting moment on blades is balanced by oil pressure. The oil pressure is varied by the governor as necessary to adjust the blades to the desired angle. Static and coulomb friction of the propeller drive train are neglected as they are assumed to be small compared to the viscous wind loading of the propeller so this pitch control mechanism is modelled as a perfect fluid integrator.! (2) Figure 3 Single Acting Propeller Actuator
4 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation Resulting model The resulting model of the propeller control system is in a form of a Simulink block diagram (see Fig. 4). The model consists of two blocks: Propeller governor and Propeller actuator. An advantage of this arrangement is that we can easily replace each of them by another type of the Propeller governor or Propeller actuator. Figure 4 Model of the Propeller Control System 3. SIMULATION Simulations of the propeller control system were realized in the open loop and also in the close loop configuration. A model of a free turbine, used in the closed loop configuration, was provided by a third party (it is not described in this article). 3.1 Simulation in open loop An example of the simulation in the open loop is presented in Fig. 5. The model of the propeller control system was operated in following regimes:  ALFA mode, propeller pitch is set in the range above the Inflightlowpitch.  BETA mode, propeller pitch is set in the range below the Inflightlowpitch. A response of the pitch to a step in the lever position is also simulated. Inputs which were changed during the simulation are listed in Tab. 1. Table 1 Inputs and output of the propeller control system in the open loop Inputs Nd demanded propeller speed Nc actual speed of the propeller Re reverse enable signal X lever position Output Pitch angle β
5 22 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation Nc vs. Ncd Nc Ncd RPM 3800 Lever position (for Reverse Mode) [mm] Lever position with reverse enable signal Beta [ ] Pitch Figure 5 Simulation in the open loop Reverse Enable Lever position [mm] Simulation and model verification in close loop Dynamic behaviour in ALFA mode of the resulting propeller control system model was verified in feedback control loop using a mathematical model of dynamic and power characteristics of both a power turbine and a propeller. The model of this propulsion part is not described here because it is not an object of this article. The model block diagram of closed loop which was implemented for verification is depicted in Fig. 6 below. Figure 6 Block diagram of the closed loop model As an input of model was used record of real change of engine power in range from flight idle to take of power at ground condition and zero velocity. Response of propeller speed was output of simulation. Comparison of transient characteristics, model output compared to real propeller speed record, is depicted in following Fig. 7.
6 Proceedings of the International Scientific Conference Modern Safety Technologies in Transportation Real NP vs. Simulated NP Simulated NP Real NP RPM Figure 7 Comparison of both simulated and real transient characteristics 4. CONCLUSION In this article we have presented a derivation of the mathematical model of the aircraft propeller control system. The model of the propeller control describes nonlinear dynamic behavior of this system within its both operational modes (ALFA and BETA mode). We should also mention that very important part of the modeling of such hydromechanical system is to eliminate occurrences of algebraic loops. Occurrences of the algebraic loops in the Simulink model could interrupt the simulation. In our model we have eliminated algebraic loop successfully, hence the model works in whole operational area without limitation. Simulations of the proposed model in the open loop yielded expected results in both operational modes. Simulation of the model in the close loop was possible only in ALFA mode, because we have had the model of the controlled system only in the range above the IFLP. In this mode we could also perform validation of the model with the measured data from the engine. The model well matched the real system behavior in this mode. REFERENCES [1] Delp, F. Aircraft Propellers and Controls. Jeppesen Sanderson Training Products [2] Braťka, J. Simulační model regulační smyčky vrtule. Zpráva VZLÚ, R3936, 2006 [3] Kerlin, T; Bratka, J. CPCS Modelling and Simulation Results Report. CESAR Deliverable document CEUNIST3.2D Rev. 0; 2008 [4] Technical and design documentations of propeller governor EA Avia Propellers a.s., 2006 [5] NOSKIEVIČ, P. Modelování a identifikace systémů. Ostrava: Montanex, pp. ISBN [6] Kulikov, Gennady G., and Haydn A. Thompson. Dynamic Modelling of Gas Turbines: Identification, Simulation, Condition Monitoring, and Optimal Control. London : Springer, pp.
3.3 FullFeathering and ConstantSpeed Governing Systems
3.3 FullFeathering and ConstantSpeed Governing Systems 3.3.1 Principle A constantspeed (RPM) system permits the pilot to select the propeller and engine speed for any situation and automatically maintain
More informationPROPELLER GOVERNOR 1 STANDARD PROPELLERR GOVERNORS (RECIPROCATING ENGINES)
PROPELLER GOVERNOR A  Types and Versions B  Description and Function C  How to Order, Questionnaire D  FAQ E  Gallery F  News A TYPES AND VERSIONS 1 Standard constant speed propeller governors (reciprocating
More informationMcCAULEY CONSTANT SPEED PROPELLER GOVERNING SYSTEM
Professor Von Kliptip Answers Your Questions About The McCAULEY CONSTANT SPEED PROPELLER GOVERNING SYSTEM FOR NONCOUNTERWEIGHTED PRESSURE TO INCREASE PITCH PROPELLERS ON TYPICAL SINGLE ENGINE AIRCRAFT
More informationManufacturing Equipment Modeling
QUESTION 1 For a linear axis actuated by an electric motor complete the following: a. Derive a differential equation for the linear axis velocity assuming viscous friction acts on the DC motor shaft, leadscrew,
More informationMcCAULEY FULL FEATHERING CONSTANT SPEED PROPELLER GOVERNING SYSTEM. Professor Von Kliptip Answers Your Questions About The
Professor Von Kliptip Answers Your Questions About The McCAULEY FULL FEATHERING CONSTANT SPEED PROPELLER GOVERNING SYSTEM FOR COUNTERWEIGHTED PRESSURETO DECREASE PITCH PROPELLERS ON RECIPROCATING ENGINES
More informationHYDRAULIC ARM MODELING VIA MATLAB SIMHYDRAULICS
Engineering MECHANICS, Vol. 16, 2009, No. 4, p. 287 296 287 HYDRAULIC ARM MODELING VIA MATLAB SIMHYDRAULICS Stanislav Věchet, Jiří Krejsa* System modeling is a vital tool for cost reduction and design
More informationPerformance. 10. Thrust Models
Performance 10. Thrust Models In order to determine the maximum speed at which an aircraft can fly at any given altitude, we must solve the simplelooking equations for : (1) We have previously developed
More informationResponse to Harmonic Excitation Part 2: Damped Systems
Response to Harmonic Excitation Part 2: Damped Systems Part 1 covered the response of a single degree of freedom system to harmonic excitation without considering the effects of damping. However, almost
More information1. A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.
Impulse Turbine 1. A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work. 2. Early turbine examples are windmills and waterwheels. 3. Gas, steam,
More informationTURBINES & AXIALFLOW MACHINES. UNIT  3 Section (12.5)
TURBINES & AXIALFLOW MACHINES UNIT  3 Section (12.5) HYDEL TURBINES (Dynamic machine to extract energy from fluid) 1. Reaction (Static pressure changes) : Converts both Flow & Kinetic energy (a)  Radial
More information1. INTRODUCTION Internal combustion engines are devices that generate work using the products of combustion as the working fluid rather than as a
1. INTRODUCTION Internal combustion engines are devices that generate work using the products of combustion as the working fluid rather than as a heat transfer medium. To produce work, the combustion is
More informationPropeller Fundamentals. A propeller is an interface between an engine and an aircraft. It creates thrust for flying an aircraft.
28 1 Propeller Fundamentals A propeller is an interface between an engine and an aircraft. It creates thrust for flying an aircraft. 2 Propeller blade 4bladed propeller 3bladed propeller 3 All propulsors
More informationChapter 6 MOMENTUM ANALYSIS OF FLOW SYSTEMS
Fluid Mechanics: Fundamentals and Applications, 2nd Edition Yunus A. Cengel, John M. Cimbala McGrawHill, 2010 Chapter 6 MOMENTUM ANALYSIS OF FLOW SYSTEMS Lecture slides by Hasan Hacışevki Copyright The
More informationChapter 8 Rotational Motion
Chapter 8 Rotational Motion Textbook (Giancoli, 6 th edition): Assignment 9 Due on Thursday, November 26. 1. On page 131 of Giancoli, problem 18. 2. On page 220 of Giancoli, problem 24. 3. On page 221
More informationCHAPTER 12 PROPORTIONAL VALVES
CHATER ROORTIONAL VALVES Fluid ower Circuits and Controls, John S.Cundiff, 00 Introduction roportional valves were developed for applications where the precision of a servo valve is not needed, but more
More informationApplied Fluid Mechanics
Applied Fluid Mechanics 1. The Nature of Fluid and the Study of Fluid Mechanics 2. Viscosity of Fluid 3. Pressure Measurement 4. Forces Due to Static Fluid 5. Buoyancy and Stability 6. Flow of Fluid and
More informationAdvances in Military Technology Vol. 6, No. 1, June Gas Turbine Engine OffDesign Calculations Using Matlab. J. Pečinka 1*, M.
AiMT Advances in Military Technology Vol. 6, No. 1, June 2011 Gas Turbine Engine OffDesign Calculations Using Matlab J. Pečinka 1*, M. Poledno 1 Department of Airspace and Rocket Technologies, University
More informationDynamic Process Modeling. Process Dynamics and Control
Dynamic Process Modeling Process Dynamics and Control 1 Description of process dynamics Classes of models What do we need for control? Modeling for control Mechanical Systems Modeling Electrical circuits
More informationMULTIENGINE TURBOPROP AEROPLANE ENDORSEMENT
MULTIENGINE TURBOPROP AEROPLANE ENDORSEMENT ENGINEERING, DATA AND PERFORMANCE QUESTIONNAIRE FOR (Aeroplane make & model) Version 1 August 1996 Name: ARN. Endorser: ARN: (Signature/Name) 1 The endorsement
More informationPROPELLER OPERATION AND MALFUNCTIONS BASIC FAMILIARIZATION FOR FLIGHT CREWS
PROPELLER OPERATION AND MALFUNCTIONS BASIC FAMILIARIZATION FOR FLIGHT CREWS INTRODUCTION The following is basic material to help pilots understand how the propellers on turbine engines work, and how they
More informationSINGLE ENGINE TURBOPROP AEROPLANE ENDORSEMENT
SINGLE ENGINE TURBOPROP AEROPLANE ENDORSEMENT ENGINEERING, DATA AND PERFORMANCE QUESTIONNAIRE FOR (Aeroplane make & model) Version 131 August 1996 Name: Endorser: (Signature/Name) Satisfactorily Completed
More informationEDUMECH Mechatronic Instructional Systems. Ball on Beam System
EDUMECH Mechatronic Instructional Systems Ball on Beam System Product of Shandor Motion Systems Written by Robert Hirsch Ph.D. 9989 All Rights Reserved. 999 Shandor Motion Systems, Ball on Beam Instructional
More informationAXIAL PISTON MOTORS SERIES 20
AXIAL PISTON MOTORS SERIES 20 AXIAL PISTON PUMPS SERIES 20 TANDEM OF AXIAL PISTON PUMPS SERIES 20 Page: 2/24 CONTENTS AXIAL PISTON PUMPS SERIES 20.. 3 GENERAL DESCRIPTIONS.. 3 FEATURES... 4 TECHNICAL DATA..
More informationModeling Torque Converter Characteristics in Automatic Drivelines: Lockup Clutch and Engine Braking Simulation
12PFL  0362 Modeling Torque Converter Characteristics in Automatic Drivelines: Lockup Clutch and Engine Braking Simulation Copyright 2012 SAE International Hadi Adibi Asl Ph.D. Candidate, Mechanical
More informationPOWER GYROSCOPES OF STABILIZING SYSTEM
Engineering MECHANICS, Vol. 18, 2011, No. 3/4, p. 259 267 259 POWER GYROSCOPES OF STABILIZING SYSTEM Jiří Šimek*, Jan Šklíba**, Michal Sivčák**, Jan Škoda** The paper deals with problems concerning power
More information1 Theoretical Background of PELTON Turbine
c [m/s] linear velocity of water jet u [m/s) runner speed at PCD P jet [W] power in the jet de kin P T [W] power of turbine F [N] force F = dj Q [m 3 /s] discharge, volume flow ρ [kg/m 3 ] density of water
More informationINVESTIGATION OF FLUID FLOW IN AXIAL HYDROSTATIC BEARING
INVESTIGATION OF FLUID FLOW IN AXIAL HYDROSTATIC BEARING Michal KOZDERA VŠB Technical University of Ostrava, Faculty of Mechanical Engineering, Department of hydromechanics and hydraulic equipment, 17.
More informationESTIMATING OPERATIONAL LIMITS OF PROPELLER PITCH ANGLE FOR A TURBOPROP AIRPLANE. Kasim Biber 1 Bartin University, Bartin Turkey
8 th ANKARA INTERNATIONAL AEROSPACE CONFERENCE AIAC2015039 1012 September 2015  METU, Ankara TURKEY ESTIMATING OPERATIONAL LIMITS OF PROPELLER PITCH ANGLE FOR A TURBOPROP AIRPLANE Kasim 1 Bartin University,
More informationChapter 5 Directional static stability and control  3 Lecture 18 Topics
Chapter 5 Directional static stability and control  3 Lecture 18 Topics 5.8.3 Control in asymmetric power, steady flight after engine failure and minimum control speed Example 5.3 5.8.4 Control for spin
More informationChapter 11 SERVO VALVES. Fluid Power Circuits and Controls, John S.Cundiff, 2001
Chapter 11 SERVO VALVES Fluid Power Circuits and Controls, John S.Cundiff, 2001 Servo valves were developed to facilitate the adjustment of fluid flow based on the changes in the load motion. 1 Typical
More informationFight Control System. Introduction to Aircraft Design and Aviation Systems (ENG3005) 1. Introduction
Fight Control System 1. Introduction Modern aircraft is a complex machine with a lot of electrical, electronic, mechanical, hydraulic or a combination of them.. This section will introduce some of its
More informationINSTRUMENTATION AND CONTROL TUTORIAL 2 ELECTRIC ACTUATORS
INSTRUMENTATION AND CONTROL TUTORIAL 2 ELECTRIC ACTUATORS This is a stand alone tutorial on electric motors and actuators. The tutorial is of interest to any student studying control systems and in particular
More information12 PROPELLERS AND PROPULSION
12 PROPELLERS AND PROPULSION 12.1 Introduction We discuss in this section the nature of steady and unsteady propulsion. In many marine vessels and vehicles, an engine (diesel or gas turbine, say) or an
More informationEngineering around a hydraulic controlled gearbox
ntroduction Engineering around a hydraulic controlled gearbox By ng. T.Heeringa oyal Boskalis Westminster N.V. P.O. Box 36, 335 AA Papendrecht, The Netherlands oyal Boskalis Westminster N.V. is an international
More information1115 4G SERIES GOVERNOR. 420 ma ANALOGUE DIGITAL SPEED SETTING
1115 4G SERIES GOVERNOR with 420 ma ANALOGUE & DIGITAL SPEED SETTING PO Box 28, 9300AA Roden, The Netherlands Tel: +31 505019888 Fax: +31 505013618 Email: regulateurs@regulateurseuropa.com 1115 4G
More informationPELTON TURBINE EXPERIMENT
Fluid Machines PELTON TURBINE EXPERIMENT 1. OBJECT The purpose of this experiment is to study the constructional details and performance parameters of Pelton Turbine. 2. INTRODUCTION Energy may exist in
More informationAXIAL PISTON PUMPS VARIABLE DISPLACEMENT
FEATURES The Series is a family of variable displacement axial piston pumps for use in closed circuits with housing and distributor cover in aluminium. The displacement is continuously variable by means
More informationMATLAB AS A PROTOTYPING TOOL FOR HYDRONIC NETWORKS BALANCING
MATLAB AS A PROTOTYPING TOOL FOR HYDRONIC NETWORKS BALANCING J. Pekař, P. Trnka, V. Havlena* Abstract The objective of this note is to describe the prototyping stage of development of a system that is
More information6. VVTi (Variable Valve Timingintelligent) System
38 ENGE 1ZZFE ENGE 6. VVTi (Variable Valve Timingintelligent) System General This system controls the intake camshaft valve timing so as to obtain balance between the engine output, fuel consumption
More informationMechatronics Approach for DeskTop CNC Milling Machine Design Riza GURBUZ
Solid State Phenomena Vol. 144 (2009) pp 175180 Online available since 2008/Sep/26 at www.scientific.net (2009) Trans Tech Publications, Switzerland doi:10.4028/www.scientific.net/ssp.144.175 Mechatronics
More informationVickers Hydraulic Pump on Boeing 7478, and 777 Aircraft. P/N (Model PV D)
Vickers Hydraulic Pump on Boeing 7478, 747400 and 777 Aircraft P/N 972952 (Model PV330016D) Eaton's Vickers Hydraulic Pump on Boeing 7478, 747400 and 777 Aircraft P/N 972952 (Model PV330016D)
More informationIdeal Jet Propulsion Cycle
Ideal Jet ropulsion Cycle Gasturbine engines are widely used to power aircrafts because of their lightweight, compactness, and high powertoweight ratio. Aircraft gas turbines operate on an open cycle
More informationFRANCIS TURBINE EXPERIMENT
FRANCIS TURBINE EXPERIMENT 1. OBJECT The purpose of this experiment is to study the constructional details and performance parameters of Francis Turbine. 2. INTRODUCTION Turbines are subdivided into impulse
More informationHPV Closed Loop Pump Data and Specifications
Data and Specifications Specifications cm 3 /rev in 3 /rev Pressure Ratings Rated Speed Max Disp Rated Speed Min Disp Envelope Size: Length Width Height Weight HP Rating Count HPV 55 55 3.35 HPV 75 75
More informationAalborg Universitet. Fault tolerant control of wind turbines Odgaard, Peter Fogh; Stoustrup, Jakob; Kinnaert, Michel
Aalborg Universitet tolerant control of wind turbines Odgaard, Peter Fogh; Stoustrup, Jakob; Kinnaert, Michel Published in: Elsevier IFAC Publications / IFAC Proceedings series Publication date: 29 Document
More informationKINETIC ENERGY RECOVERY SYSTEM BY MEANS OF FLYWHEEL ENERGY STORAGE
ADVANCED ENGINEERING 3(2009)1, ISSN 18465900 KINETIC ENERGY RECOVERY SYSTEM BY MEANS OF FLYWHEEL ENERGY STORAGE Cibulka, J. Abstract: This paper deals with the design of Kinetic Energy Recovery Systems
More informationAERIAL PLATFORM SPECIFICATIONS SPEC. SHEET No. AT2702/EX30 MODEL AT270TG MAX. BASKET BOTTOM HEIGHT 27.0 m BASKET EQUIPMENT BOOM ELEVATION ROTATION
DATE September, 2012 TADANO AERIAL PLATFORM MODEL : AT270TG (CARRIER : FC9JJLA) GENERAL DATA MAXIMUM WORKING HEIGHT 29.0 m MAXIMUM BASKET BOTTOM HEIGHT 27.0 m MAXIMUM BASKET LOADING CAPACITY 200 kg or
More informationDiagnosing Hydraulic Problems
Diagnosing Hydraulic Problems 1 Problems A pressure test is a key check when you need to determine if a problem is caused by something that is inside or outside of the transmission. Low automatic transmission
More informationDash8  Q400  Propeller
Dash8  Q4  Propeller 1. General he propeller control system consists of the following components: Propeller lectronic Control (PC) Unit Propeller Pitch Control Unit (PCU) High Pressure PCU il Pump and
More information11. IMPACT OF A JET. Introduction
11. IMPACT OF A JET Introduction Water turbines are widely used throughout the world to generate power. In the type of water turbine referred to as a Pelton wheel, one or more water jets are directed tangentially
More informationIntroduction to Process Control Actuators
1 Introduction to Process Control Actuators Actuators are the final elements in a control system. They receive a low power command signal and energy input to amplify the command signal as appropriate to
More informationPREDICTION OF MACHINE TOOL SPINDLE S DYNAMICS BASED ON A THERMOMECHANICAL MODEL
PREDICTION OF MACHINE TOOL SPINDLE S DYNAMICS BASED ON A THERMOMECHANICAL MODEL P. Kolar, T. Holkup Research Center for Manufacturing Technology, Faculty of Mechanical Engineering, CTU in Prague, Czech
More informationRotax 912 is Single Lever Propeller Governor System
Rotax 912 is Single Lever Propeller Governor System 1 Rotax 912 is Single Lever Propeller Governor System Would you drive your car in first gear on the highway? If you fly a fixed pitch propeller, that
More informationResponse to Harmonic Excitation
Response to Harmonic Excitation Part 1 : Undamped Systems Harmonic excitation refers to a sinusoidal external force of a certain frequency applied to a system. The response of a system to harmonic excitation
More informationPerformance. Power Plant Output in Terms of Thrust  General  Arbitrary Drag Polar
Performance 11. Level Flight Performance and Level flight Envelope We are interested in determining the maximum and minimum speeds that an aircraft can fly in level flight. If we do this for all altitudes,
More informationDevelopment of Hardware In the Loop System (HILS) for Hydraulic Excavator
22 nd International Symposium on Automation and Robotics in Construction ISARC 2005  September 4, 2005, Ferrara (Italy) Development of Hardware In the Loop System (HILS) for Hydraulic Excavator TaeHyeong
More informationModeling and Study of a Standalone PMSG Wind Generation System Using MATLAB/SIMULINK
Universal Journal of Electrical and Electronic Engineering 2(7): 270277, 2014 DOI: 10.13189/ ujeee.2014.020702 http://www.hrpub.org Modeling and Study of a Standalone PMSG Wind Generation System Using
More informationAUTOMATIC TRANSMISSION (From '08M) (5AT)
AUTOMATIC TRANSMISSION (From '08M) (5AT) GENERAL 1. General A: GENERAL In purpose of improving shifting quality, driving performance and fuel efficiency, we have developed 5speed automatic transmission
More information2 rad c. π rad d. 1 rad e. 2π rad
Name: Class: Date: Exam 4PHYS 101F14 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A wheel, initially at rest, rotates with a constant acceleration
More informationModule 6. Actuators. Version 2 EE IIT, Kharagpur 1
Module 6 Actuators Version 2 EE IIT, Kharagpur 1 Lesson 25 Control Valves Version 2 EE IIT, Kharagpur 2 Instructional Objectives At the end of this lesson, the student should be able to: Explain the basic
More informationVariable Speed Pump Drives for Industrial Machinery System Considerations
Sy Variable Speed Pump Drives for Industrial Machinery System Considerations Jan Komsta, Ph.D. Bosch Rexroth 11.19.2013 Chicago 1 Variable Speed Pump Drives for Industrial Machinery Why speed variable
More informationMechanical Principles
Unit 4: Mechanical Principles Unit code: F/60/450 QCF level: 5 Credit value: 5 OUTCOME 3 POWER TRANSMISSION TUTORIAL BELT DRIVES 3 Power Transmission Belt drives: flat and vsection belts; limiting coefficient
More informationEuropean Aviation Safety Agency
European Aviation Safety Agency EASA TYPE CERTIFICATE DATA SHEET Number : IM.E.026 Issue : 04 Date : 04 April 2014 Type : Engine Alliance LLC GP7200 series engines Models: GP7270 GP7272 GP7277 List of
More informationPower Electronics. Prof. K. Gopakumar. Centre for Electronics Design and Technology. Indian Institute of Science, Bangalore.
Power Electronics Prof. K. Gopakumar Centre for Electronics Design and Technology Indian Institute of Science, Bangalore Lecture  1 Electric Drive Today, we will start with the topic on industrial drive
More informationAn Introduction to Using Simulink. Exercises
An Introduction to Using Simulink Exercises Eric Peasley, Department of Engineering Science, University of Oxford version 4.1, 2013 PART 1 Exercise 1 (Cannon Ball) This exercise is designed to introduce
More informationSimple Machines & Work
Introduction Simple Machines & Work Simple machines are devices like pulleys, levers, hydraulic lifts, ramps, gear sets, etc. These devices do not generate mechanical energy (they have no engines or motors).
More informationChapter 3.5: Fans and Blowers
Part I: Objective type questions and answers Chapter 3.5: Fans and Blowers 1. The parameter used by ASME to define fans, blowers and compressors is a) Fan ration b) Specific ratio c) Blade ratio d) Twist
More informationF mg (10.1 kg)(9.80 m/s ) m
Week 9 homework IMPORTANT NOTE ABOUT WEBASSIGN: In the WebAssign versions of these problems, various details have been changed, so that the answers will come out differently. The method to find the solution
More informationEngs 22 Systems Summer A. State Variables The following variables are important in characterization and analysis of fluid systems:
I. General Introduction and Applications: Applications: LUMPED FLUID SYSTEMS Fluid delivery systems; plumbing. For water or other fluids, for direct use by people, or for industrial operations, such as
More informationMECHANICAL PRINCIPLES OUTCOME 4 MECHANICAL POWER TRANSMISSION TUTORIAL 2 BELT DRIVES
MECHANICAL PRINCIPLES OUTCOME 4 MECHANICAL POWER TRANSMISSION TUTORIAL BELT DRIVES Simple machines: lifting devices e.g. lever systems, inclined plane, screw jack, pulley blocks, Weston differential pulley
More informationWind Turbines. Wind Turbines 2. Wind Turbines 4. Wind Turbines 3. Wind Turbines 5. Wind Turbines 6
Wind Turbines 1 Wind Turbines 2 Introductory Question Wind Turbines You and a child half your height lean out over the edge of a pool at the same angle. If you both let go simultaneously, who will tip
More informationOil Pumps for Internal Combustion Engines and Transmissions
Oil Pumps for Internal Combustion Engines and Transmissions Conventional, Variable and Electrical Oil pumps for internal combustion engines conventional, variable and electrical Virtually all the engine
More informationHydraulic Positioning Unit with Internal Mechanical Position Feedback
ISBN 978184626xxxx Proceedings of 2011 International Conference on Optimization of the Robots and Manipulators (OPTIROB 2011) Sinaia, Romania, 2628 Mai, 2011, pp. xxxxxx Hydraulic Positioning Unit
More informationManual for the Silent R 1,61m V2 Automaticvariablepitch propeller
Revision 1.2 1 Revision 1.2 2 Manual for the Silent R 1,61m V2 Automaticvariablepitch propeller V2 2Blade suitable for Jabiru 2200. Edited: 08/06/07 This propeller is designed for experimental and ultralight
More informationHardware in the loop for Electronic Throttle System Identification and Control
Hardware in the loop for Electronic Throttle System Identification and Control Dr. Arek Dutka ACTC Electronic Throttle Body Connector pins Throttle controls air flow to car engine Return spring Controls
More informationMECHANICAL ENGINEERING EXPERIMENTATION AND LABORATORY II EXPERIMENT 490.07 ENGINE PERFORMANCE TEST
MECHANICAL ENGINEERING EXPERIMENTATION AND LABORATORY II EXPERIMENT 490.07 ENGINE PERFORMANCE TEST 1. Objectives To determine the variation of the brake torque, brake mean effective pressure, brake power,
More informationAdvance Electronic Load Controller for Micro Hydro Power Plant
Journal of Energy and Power Engineering 8 (2014) 18021810 D DAVID PUBLISHING Advance Electronic Load Controller for Micro Hydro Power Plant Dipesh Shrestha, Ankit Babu Rajbanshi, Kushal Shrestha and Indraman
More informationVirtual Prototyping of Aerospace Systems Using Integrated LMS Virtual.Lab and IMAGINE AMESim
Virtual Prototyping of Aerospace Systems Using Integrated LMS Virtual.Lab and IMAGINE AMESim Joel Tollefson Imagine Inc. Aerospace Business Development Hans Van den Wijngaert LMS Product Manager Motion
More informationRotation: Moment of Inertia and Torque
Rotation: Moment of Inertia and Torque Every time we push a door open or tighten a bolt using a wrench, we apply a force that results in a rotational motion about a fixed axis. Through experience we learn
More informationWind Turbine Power Calculations
Wind Turbine Power Calculations RWE npower renewables Mechanical and Electrical Engineering Power Industry INTRODUCTION RWE npower is a leading integrated UK energy company and is part of the RWE Group,
More informationUnit 24: Applications of Pneumatics and Hydraulics
Unit 24: Applications of Pneumatics and Hydraulics Unit code: J/601/1496 QCF level: 4 Credit value: 15 OUTCOME 2 TUTORIAL 1 HYDRAULIC PUMPS The material needed for outcome 2 is very extensive so there
More informationMODELING, SIMULATION AND DESIGN OF CONTROL CIRCUIT FOR FLEXIBLE ENERGY SYSTEM IN MATLAB&SIMULINK
MODELING, SIMULATION AND DESIGN OF CONTROL CIRCUIT FOR FLEXIBLE ENERGY SYSTEM IN MATLAB&SIMULINK M. Pies, S. Ozana VSBTechnical University of Ostrava Faculty of Electrotechnical Engineering and Computer
More informationSlide 10.1. Basic system Models
Slide 10.1 Basic system Models Objectives: Devise Models from basic building blocks of mechanical, electrical, fluid and thermal systems Recognize analogies between mechanical, electrical, fluid and thermal
More informationDATE: December 29, 2010 Service Instruction No. 1427C (Supersedes Service Instruction No. 1427B) Engineering Aspects are FAA (DER) Approved
652 Oliver Street Williamsport, PA. 17701 U.S.A. Tel. 570 323 6181 Fax. 570 327 7101 www.lycoming.com SERVICE INSTRUCTION DATE: December 29, 2010 Service Instruction No. 1427C (Supersedes Service Instruction
More informationE 490 Fundamentals of Engineering Review. Fluid Mechanics. M. A. Boles, PhD. Department of Mechanical & Aerospace Engineering
E 490 Fundamentals of Engineering Review Fluid Mechanics By M. A. Boles, PhD Department of Mechanical & Aerospace Engineering North Carolina State University Archimedes Principle and Buoyancy 1. A block
More informationModule 13 Belt drives. Version 2 ME, IIT Kharagpur
Module 3 Belt drives Version ME, IIT Kharagpur esson Introduction to Belt drives Version ME, IIT Kharagpur Instructional Objectives: At the end of this lesson, the students should be able to understand:
More informationTurbines and speed governors
ELEC0047  Power system dynamics, control and stability Turbines and speed governors Thierry Van Cutsem t.vancutsem@ulg.ac.be www.montefiore.ulg.ac.be/~vct November 2015 1 / 36 Steam turbines Turbines
More informationCOUNTERBALANCE VALVES
COUNTERBALANCE VALVES Introduction They are modulating valves which allow free flow into the actuator and then block the reverse flow until they feel a pilot pressure inversely proportional to the load
More informationF104 Flight Controls
Information regarding the Lockheed F104 Starfighter F104 Flight Controls An article published in the Zipper Magazine #46 June2001 Author: Country: Website: Email: Theo N.M.M. Stoelinga The Netherlands
More informationAERODYNAMIC ANALYSIS OF BLADE 1.5 KW OF DUAL ROTOR HORIZONTAL AXIS WIND TURBINE
AERODYNAMIC ANALYSIS OF BLADE 1.5 KW OF DUAL ROTOR HORIZONTAL AXIS WIND TURBINE HITENDRA KURMI Research scholar, School of Energy and Environmental Managment,UTD, RGPV Bhopal,MP,INDIA htr.ptl@gmail.com
More informationSimulation of Mild Compressor Surge using GTPOWER
Simulation of Mild Compressor Surge using GTPOWER Dr. Phil Keller and Dr. Ing. Michael Becker, BorgWarner Inc. Rick Dehner and Prof. Ahmet Selamet, The Ohio State University November 8, 2010 Our Beliefs
More informationEuropean Aviation Safety Agency
European Aviation Safety Agency EASA TYPECERTIFICATE DATA SHEET Number: E.070 Issue: 05 Date: 16 November Type: GE Aviation Czech M601/H80 series turboprop engines Models: M601D M601D1 M601D2 M601D11
More informationIntroduction to Aerospace Engineering Formulas
Introduction to Aerospace Engineering Formulas Aerodynamics Formulas. Definitions p = The air pressure. (P a = N/m 2 ) ρ = The air density. (kg/m 3 ) g = The gravitational constant. (Value at sea level
More informationIndustrial drive based wind simulator for small wind turbine optimisation
Industrial drive based wind simulator for small wind turbine optimisation S. Paepen MSc*, K. De Koker MSc*, P. Adams MSc* and P. Coussens PhD* * KAHO SintLieven, Department Gent, G. Desmetstraat, 9000
More informationRotational Motion. Symbol Units Symbol Units Position x (m) θ (rad) (m/s) " = d# Source of Parameter Symbol Units Parameter Symbol Units
Introduction Rotational Motion There are many similarities between straightline motion (translation) in one dimension and angular motion (rotation) of a rigid object that is spinning around some rotation
More informationSmall HorizontalAxis Wind Turbine Blade for Low Wind Speed Operation
Journal of Applied Science and Engineering, Vol. 16, No. 4, pp. 345 351 (2013) DOI: 10.6180/jase.2013.16.4.02 Small HorizontalAxis Wind Turbine Blade for Low Wind Speed Operation P. Pathike, T. Katpradit,
More informationInstructor : Dr. Emad Tanbour Students: Taher Al Taweel, Mohammed AlAbad, Abdul Aziz AlSaleh
Prince Mohammed University Learning Outcome assessment III Instructor : Dr. Emad Tanbour Students: Taher Al Taweel, Mohammed AlAbad, Abdul Aziz AlSaleh Outlines Introduction Literature Review Solar Car
More informationLINEAR MOTOR CONTROL IN ACTIVE SUSPENSION SYSTEMS
LINEAR MOTOR CONTROL IN ACTIVE SUSPENSION SYSTEMS HONCŮ JAROSLAV, HYNIOVÁ KATEŘINA, STŘÍBRSKÝ ANTONÍN Department of Control Engineering, Faculty of Electrical Engineering, Czech Technical University Karlovo
More informationLift Trucks. Application Notes. Fluid Power in Motion
Lift Trucks Application Notes Fluid Power in Motion Solutions for Lift Trucks. Eaton has the products and capabilities to provide complete system solutions for your application needs. World class hydraulic
More informationModeling Fluid Systems
Modeling Fluid Systems The prevalent use of fluid (hydraulic) circuitry in machines tool applications, aircraft control systems, and similar operations occurs because of such factors such as accuracy,
More information