Presentation is loading. Please wait.

Presentation is loading. Please wait.

Supplemental Learning Module

Published byCaitlin Wilkerson Modified over 6 years ago

Similar presentations

Presentation on theme: "Supplemental Learning Module"— Presentation transcript:

1 Supplemental Learning Module
COHERENT APPLICATION THREADS CATs Wind Turbines Supplemental Learning Module EK 301 MECHANICS 1 Wind Turbines & Friction Don Wroblewski Associate Professor, Mechanical Engineering Associate Chair, Aerospace Engineering Undergraduate Program

2 BRAKING AND FRICTION BRAKE Braking used to stop rotor in high winds, to prevent structural failure

3 BRAKING AND FRICTION MB rBR N F N x
Moment from aerodynamic forces on blades MB x Brake FRICTION force rBR N Brake NORMAL force N F VIEW FROM BELOW Maximum FRICTION force Sum moments about x axis FRICTION force needed to prevent motion m is static coefficient of friction Minimum NORMAL force needed to prevent motion,

Download ppt "Supplemental Learning Module"

Similar presentations

Aim: More friction Do Now:

Aim: More friction Do Now:
READING QUIZ The friction that exist between two contacting surfaces in the absence of lubrication is called _________. A) fluid friction B) normal friction.

READING QUIZ The friction that exist between two contacting surfaces in the absence of lubrication is called _________. A) fluid friction B) normal friction.
ENGR 225 Section 1.1 -1.2.

ENGR 225 Section
Euler Turbine Equation

Euler Turbine Equation
Secondary Flows in Turbine Cascades & Consequences P M V Subbarao Professor Mechanical Engineering Department Finite Length of Blade Generates more Physical.

Secondary Flows in Turbine Cascades & Consequences P M V Subbarao Professor Mechanical Engineering Department Finite Length of Blade Generates more Physical.
Friction Hard to Live With It, Can’t Live Without It Mu Coefficient of Friction FnFn What’s Stopping You?

Friction Hard to Live With It, Can’t Live Without It Mu Coefficient of Friction FnFn What’s Stopping You?
Friction and the Coefficients of Friction

Friction and the Coefficients of Friction
Friction Quiz Laws of Dry Friction

Friction Quiz Laws of Dry Friction
The Effect of Spoiler Deflection On Airplane Braking Performance

The Effect of Spoiler Deflection On Airplane Braking Performance
Where: I T = moment of inertia of turbine rotor.  T = angular shaft speed. T E = mechanical torque necessary to turn the generator. T A = aerodynamic.

Where: I T = moment of inertia of turbine rotor.  T = angular shaft speed. T E = mechanical torque necessary to turn the generator. T A = aerodynamic.
Force Problems involving Friction. What is Friction?  It is a force that opposes motion.  Friction is caused by the contact (rubbing) of 2 surfaces.

Force Problems involving Friction. What is Friction?  It is a force that opposes motion.  Friction is caused by the contact (rubbing) of 2 surfaces.
Wind Energy Conversion Systems April 21-22, 2003 K Sudhakar Centre for Aerospace Systems Design & Engineering Department of Aerospace Engineering

Wind Energy Conversion Systems April 21-22, 2003 K Sudhakar Centre for Aerospace Systems Design & Engineering Department of Aerospace Engineering
Friction  Friction results from relative motion between objects.  Frictional forces are forces that resist or oppose motion.

Friction  Friction results from relative motion between objects.  Frictional forces are forces that resist or oppose motion.
Michael Cleveland Jesse Piburn George Threadgill Justin Lamb.

Michael Cleveland Jesse Piburn George Threadgill Justin Lamb.
Period 1 presentation. The ruins of a Persian windmill.

Period 1 presentation. The ruins of a Persian windmill.
101 PHYS CH3 Part 2 Section (12) understand Friction Force. Draw free-body diagrams for objects at rest and in motion with Friction Force. Apply your.

101 PHYS CH3 Part 2 Section (12) understand Friction Force. Draw free-body diagrams for objects at rest and in motion with Friction Force. Apply your.
Wind Turbine Aerodynamics Section 1 – Basic Principles E-Learning UNESCO ENEA Casaccia - February 26 2007 Fabrizio Sardella.

Wind Turbine Aerodynamics Section 1 – Basic Principles E-Learning UNESCO ENEA Casaccia - February Fabrizio Sardella.
Forging new generations of engineers. Brakes Friction & Braking Friction: A force that opposes motion, it prevents the sliding between two surfaces that.

Forging new generations of engineers. Brakes Friction & Braking Friction: A force that opposes motion, it prevents the sliding between two surfaces that.
A force is a push or pull. Net force is the combination (sum) of all acting forces.

A force is a push or pull. Net force is the combination (sum) of all acting forces.
Period 7.   The more curved side generates low air pressures, due to more surface area. While high pressure air, pushes on the other side of the design.

Period 7.   The more curved side generates low air pressures, due to more surface area. While high pressure air, pushes on the other side of the design.

Similar presentations

Ads by Google