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

Automatic synchronising - propellers, AUTOMATIC SYNCHRONISING: Automa...

AUTOMATIC SYNCHRONISING: Automatic Synchronisation uses engine driven synchronising alternators to detect electrically any increase or decrease in a slave engine's speed.  Ea

Principles of jet propulsion, Principles of Jet Propulsion: Newton 's...

Principles of Jet Propulsion: Newton 's Laws of Motion. To understand the basic principles of jet propulsion it is necessary to understand the practical application of Sir I

Combustion process, Combustion process: Air from the engine compressor ...

Combustion process: Air from the engine compressor enters the combustion chamber at a velocity up to 500 feet per second, but because at this velocity the air speed is far too

Electrical engineering, i want to take your kelp in writing the research pa...

i want to take your kelp in writing the research paper, which can be published in reputed international journal.

#friction, the crate has a mass M and is subjectedto towing P acting at an ...

the crate has a mass M and is subjectedto towing P acting at an angle t1 with the horizontal.if the coefficient of static friction is k,determine the magnitude of p to just start

Capital structure of X Ltd. as on 31st Dec 2003, The following is the capit...

The following is the capital structure of X Ltd. as on 31st Dec 2003 Rs in m

Digit, Design the counters for the digital clock Minimum 100 words accepted...

Design the counters for the digital clock Minimum 100 words accepted#

Co2 molds (carbon dioxide moulding), CO 2  Molds (Carbon dioxide Moulding...

CO 2  Molds (Carbon dioxide Moulding) is the process of hardening the moulds and cores by using carbon dioxide and sodium silicate liquid base binder is one of the most widely u

Cash flow statement, Cash flow statement is one of the three necessary repo...

Cash flow statement is one of the three necessary reporting & measurement systems for a company. The cash flow statement gives a third perspective alongside the profit & loss accou

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