ENME404-18S2 (C) Semester Two 2018

Aerodynamics and Ground Vehicle Dynamics

15 points

Details:
Start Date: Monday, 16 July 2018
End Date: Sunday, 18 November 2018
Withdrawal Dates
Last Day to withdraw from this course:
  • Without financial penalty (full fee refund): Friday, 27 July 2018
  • Without academic penalty (including no fee refund): Friday, 12 October 2018

Description

Aerofoil theory: potential flow, thin aerofoil and Prandtl lifting line; Boundary layer theory; Compressibility effects; Mechanics of flight; Stability and control in flight; Range and endurance; Wind tunnel testing; Glider design, build and test; Wind turbines; Ground vehicles: traction and rolling resistance, steering and suspension

This course teaches the fundamental understanding and some of the design skills required for aerodynamic design in the aviation and automotive industries, with relevance also to the wind and hydroelectric power industries. The course strengthens skills required for almost any industrial application with moving fluids.

Theoretical knowledge in the topics above will be taught by lectures and self-paced study with online materials. Practical exercises include modelling aerofoils with Xfoil, measuring aerofoil properties in a wind tunnel, designing and building a hand-launched glider from supplied materials, and modelling wheeled vehicle dynamics in MATLAB.

Aerofoil properties:
• Flat plate lift and drag
• Aerofoil lift, drag and pitching moments
• Pressure and shear stress distributions on aerofoils, and their integration to lift and drag
• Polar data
• Tip vortices and other finite wing effects

Aircraft performance:
• Equations of motion for flight vehicles
• Glide ratio
• Thrust required
• Power required
• Range and endurance
• Takeoff and landing
• High lift devices
• Turning performance


Stability and control of flying vehicles:
• Control surfaces for fixed-wing craft
• Actuators
• Longitudinal stability (trim) treated quantitatively
• Lateral, directional and roll stability treated qualitatively

Wind tunnel testing:
• Scaling and model choice

Propeller systems:
• Propeller design considerations
• Blade element momentum theory (BEMT) design method

High speed effects:
• Transonic control
• Supersonic control and drag
• Supersonic propulsion


Wheeled ground vehicle dynamics:
• Load transfer in cornering
• Tyre design, traction and rolling resistance
• Ground vehicle aerodynamics
• Suspension types
• Steering geometry

Learning Outcomes

  • Learning Outcomes and National Qualifications Framework (NQF)

    Knowledge outcomes:
  • Solid grasp of the fluid dynamics underlying aerodynamics and methods for computing the pressure and shear stress distributions and total lift, drag and moments
  • Knowing where to find and how to manipulate empirical data to estimate drag and lift on simple bodies
  • Knowledge of the relationship between flying vehicle configuration, control surface layout and stability
  • Understanding of the common designs of wind turbines and their performance
  • Fundamental knowledge of the forces governing ground vehicle performance and comfort and their relationship to steering, suspension and tyres.

    Skills outcomes:
  • Ability to choose an appropriate airfoil for a specific application
  • Ability to design a body enclosing a given envelope for low aerodynamic or hydrodynamic drag
  • Ability to estimate thrust, power, range, endurance and speed in flight
  • Ability to set up and measure models in wind tunnels
  • Ability to design and construct simple lightweight gliders
  • Ability to choose appropriate tyres and tyre pressures for a ground vehicle and calculate power requirements for given speeds.

    Personal attributes developed:
  • Communicating complex concepts to peers
  • Designing and constructing optimal systems with limited resources
    • University Graduate Attributes

      This course will provide students with an opportunity to develop the Graduate Attributes specified below:

      Critically competent in a core academic discipline of their award

      Students know and can critically evaluate and, where applicable, apply this knowledge to topics/issues within their majoring subject.

Prerequisites

ENME304 or ENME314

Restrictions

ENME474

Course Coordinator / Lecturer

Mark Jermy

Assessment

Assessment Due Date Percentage 
Aerofoil lab report 10%
Quiz 1 2.5%
Quiz 2 2.5%
Wing planform assignment 13 Aug 2018 10%
Glider design report 19 Sep 2018 10%
Glider performance 5%
MATLAB exercise 5%
Final exam 55%

Textbooks / Resources

Recommended Reading

Anderson, J D; Fundamentals of Aerodynamics ; McCraw-Hill, 2010 (Choose one of the recommended textbooks).

Anderson, J D; Introduction to Flight ; McGraw-Hill, 2005 (Choose one of the recommended textbooks).

MIT; The Simple Science of Flight ; 2009 (General Interest).

Indicative Fees

Domestic fee $1,059.00

International fee $5,125.00

* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.

For further information see Mechanical Engineering .

All ENME404 Occurrences

  • ENME404-18S2 (C) Semester Two 2018