Static aeroelasticity, Other Engineering

Assignment Help:

An object, such as an aerofoil, moving through a fluid disturbs the surrounding flow field. The fluid velocity varies along the aerofoil surface creating a variation in pressure as indicated in Fig. 7. The figure shows the pressure coeficient cp(x) where cp = (p-p)/q with q as dynamic pressure and p as undisturbed pressure far away from the aerofoil. Integrating the pressure coeficient along the object's surface gives the aerodynamic loads of lift, drag and moment.

1857_Static Aeroelasticity.png

Pressure coeficient around aerofoil NACA 4412 at Mach 0.3 and αr = 1.0o.

The centre of pressure is defined as the average location of the pressure where the resulting forces act. This is similar to defining the centre of gravity as the average location of the weight. The aerodynamic moment at the centre of pressure is zero. This point varies with the angle of attack, while for an aerofoil at subsonic speeds it is close to the quarter chord point.

Similarly, the aerodynamic centre is defined as the point along the chord where the aero-dynamic moment is independent of the angle of attack. For an aerofoil at subsonic speeds, the aerodynamic centre is close to the quarter chord point, while at supersonic speeds the points shifts to the mid-chord location.

 


Related Discussions:- Static aeroelasticity

Legal issues and professional ethics in engineering, Write a detailed repor...

Write a detailed report under the theme "Legal Issues and Professional ethics in Engineering". Some of the topics that you can consider, but not limited to them, are as follow:

Chvorinov''s rule, Q. Why is it desirable to design a casting to have direc...

Q. Why is it desirable to design a casting to have directional solidification sweeping from the extremities of the mould to riser based on Chvorinov's rule? What would be an ideal

Audio amplifier classes, Expertsmind.com brings you unique solution in el...

Expertsmind.com brings you unique solution in electrical engineering Audio Amplifier Classes Class A The transistor amp conducts for the entire cycle of input signal.

Principles of sprinkler systems-fire safety engineering, Principles of Spri...

Principles of Sprinkler Systems-Fire safety Engineering Sprinkler systems may be installed in a building to achieve a number of different objectives.  Very often the primary r

Matlab, 2. Write a MATLAB program to perform discounted reward value iterat...

2. Write a MATLAB program to perform discounted reward value iteration. Show me the MATLAB code and also an output from your code for solving the problem provided in the data above

Accounting rate of return method, Accounting rate of return method ARR met...

Accounting rate of return method ARR method is also known as ‘Return on Investment Method’. Here accounting information as shown in the financial statement is the basis for measu

Plaster molds, Plastic molds are made of plaster of Paris (gypsum) or calci...

Plastic molds are made of plaster of Paris (gypsum) or calcium sulphate, talc and silica flour is added in the plaster of Paris to improve strength and to control the time required

Limiting travel distances - means of escape, Limiting travel distances - Me...

Limiting travel distances - Means of Escape: Some buildings, or parts of buildings, do not have alternative exits and do not have protected escape routes leading to a place of

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd