Nội dung chi tiết: Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
Study of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectingDaniel J. WalterB.Eng. (Hons)SCHOOL OF AEROSPACE. MECHANICAL & MANUFACTURING ENGINEERINGPORTFOLIO OF SCIENCE, ENGINEERING & TECHNOLOGYRMIT UNIVERSITY39326AbstractAerodynamic devices, such as wings, are used in higher levels of motorsport (Formula-1 etc.) to increase the contact force between the Masters thesis of engineering study of aerofoils at high angle of attack in ground effectroad and tyres (i.e. to generate downforce). This in turn increases the performance envelope of the race car. However the extra downforce increases ae
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
rodynamic drag which (apart from when braking) is generally detrimental to lap-times. The drag acts to slow the vehicle, and hinders the effect of avaStudy of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectof attack can be safely reached, although at a higher cost in drag. Variable geometry aerodynamic devices have been used in many forms of motorsport in the past offering the ability to change the relative values of downforce and drag. These have invariably been banned, generally due to safety reason Masters thesis of engineering study of aerofoils at high angle of attack in ground effects. The use of active aerodynamics is currently legal in both Formula SAE (engineering competition for university students to design, build and race an
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
open-wheel race car) and production vehicles. A number of passenger car companies are beginning to incorporate active aerodynamic devices in their deStudy of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectd. The purpose of the study was to examine the effect ground proximity on aerofoils post stall, in an effort to evaluate the use of active aerodynamics to increase the performance of a race car. The aerofoils were tested at angles of attack ranging from 0° - 135°. The tests were performed at a Reyno Masters thesis of engineering study of aerofoils at high angle of attack in ground effectlds number of 2.16 X 105 based on chord length. Forces were calculated via the use of pressure taps along the centreline of the aerofoils. The RMIT In
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
dustrial Wind Tunnel (IWT) was used for the testing. Normally 3m wide and 2m high, an extra contraction was installed and the section was reduced to fStudy of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectffect caused by the aerofoils when at high angles of incidence. The walls of the tunnel were pressure tapped to allow monitoring of the pressure gradient along the tunnel. The results show a delay in the stall of the aerofoils tested with reduced ground clearance. Two of the aerofoils tested showed Masters thesis of engineering study of aerofoils at high angle of attack in ground effecta decrease in C| with decreasing ground clearance; the third showed an increase. The Cd of the aerofoils post-stall decreased with reduced ground clea
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
rance. Decreasing ground clearance was found to reduce pitch moment variation of the aerofoils with varied angle of attack.The results were used in a Study of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectng by 9% to 1.89g (wings @ 10°), or alternatively its braking by 10% to 2.04g (wings @ 45°). With the wings in thehttps://thuvienf.cori!low-drag position (0° AoA) the addition power requirement would be only 26.ow. However given the added complexity an active aerodynamic system would add the desig Masters thesis of engineering study of aerofoils at high angle of attack in ground effectn, manufacture and testing of a Formula SAE race car, it is unlikely that such a system could be considered worthwhile.iiDeclarationỊ Daniel Waller de
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
clare that:•the work included in this thesis is my own except where due acknowledgement has been made;•the work in this thesis has not been submitted Study of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectsince the official commencement date of the approved research program;•any editorial work, paid or unpaid, carried out by a third party has been acknowledged:•ethics procedures and guidelines have been followed.Daniel Walter39167iiiAcknowledgementsFirstly I would like to thank my family. Their conti Masters thesis of engineering study of aerofoils at high angle of attack in ground effectnuing support and encouragement have allowed me to complete this project.Thankyou to my Supervisors, Prof. Simon Watkins and Dr Angelo Tempia for thei
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
r guidance and support throughout the project. Thankyou for the time spent reading and commenting on the drafts for this thesis. Their enthusiasm and Study of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectrovided access to data for this project, and provided an environment for the development of tomorrow s automotive leaders. I look forward to the new developments you will bring to the FSAE.The RMIT technical staff are a valuable resource and this project would not have happened without their guidanc Masters thesis of engineering study of aerofoils at high angle of attack in ground effecte and assistance. Thankyou to Gil Atkin for his assistance in the construction and installation of the mechanism to support the aerofoils and the cons
Masters thesis of engineering study of aerofoils at high angle of attack in ground effect
truction, installation and removal of the 2D test section for the RMIT Industrial Wind Tunnel. Thankyou to both Adrian Reivers and Mark Overend for thStudy of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri Masters thesis of engineering study of aerofoils at high angle of attack in ground effectess to, and the use of relevant tyre data.ivTable of ContentsStudy of Aerofoils at High Angle of Attack, in Ground Effect.A thesis submitted in fulfilment of the requirements for the degree ofMaster of Engineeri