Flight dynamics - pitching moment, Other Engineering

Assignment Help:


The centre of pressure (CP) is defined as the point about which the resultant moment is zero; the net effect of the flow in terms of forces and moments would be the same as if the resultant force vector were located at the CP. The problem with using the CP in the analysis of aircraft stability and flight dynamics is that the CP is a function of incidence α and moves around considerably; indeed it is not always even within the aerofoil.

The flow-field around an aircraft results in a pressure distribution that in turn gives rise to a normal pressure force and a surface shear force distribution. Just as with any system of forces, these complex force distributions can be represented by a simple equivalent force system that provides:
1. An identical resultant force;
2. An identical moment. (Identical about any point.)
Furthermore, the resultant aerodynamic force can be resolved into lift, drag, and (in asymmetric flight) side-force components; see Fig. 2.1-1. The flow also produces a resultant moment about any given point, e.g. ‘a' in Fig. 2.1-1. This is denoted Ma. The moment about a different point would or course be different.

459_pitiching moment.png


Related Discussions:- Flight dynamics - pitching moment

Financial Ratio, The following information was extracted from the accountin...

The following information was extracted from the accounting records of De Walt Company as at 28 February 2011 (the end of their financial year): Sales (50% on credit) 1 400 000 Cos

Survey of manufacturing, Survey of Manufacturing : A usable product is man...

Survey of Manufacturing : A usable product is manufactured in the following sequence. Ore from Earth → Reducing processes → Molten metal → Commercial Castings → Ingots → Furth

Sand casting, Sand castings are porous enough and, therefore, cannot be use...

Sand castings are porous enough and, therefore, cannot be used for pressure sight vessels. Structure obtained by sand casting is loose and hence not stranger than wrought products.

Coding system, What is the possible problem if there is more than one part ...

What is the possible problem if there is more than one part having the same code?

Fire risk assessment in uk - fire protection engineering, Fire risk assessm...

Fire risk assessment in UK: In the UK FRAs are required by law in all commercial premises.  But the FRAs are not the same as described in NFPA 551.  The principles remain the

Define demat account?, Define Demat Account? What is the use of it? Dema...

Define Demat Account? What is the use of it? Demat indicates Dematerialization of reveal, in easy it is an consideration with which a individual can business in protection indus

Solvency ratios and profitability ratios, Solvency Ratios: Profitability R...

Solvency Ratios: Profitability Ratios: The profitability ratios determine the capacity of the company to generate the profits with the amount of shareholders investment. Again hig

The unity gain follower, The unity gain follower: The somewhat lengthy ...

The unity gain follower: The somewhat lengthy term operational amplifier will now be dropped and it will be referred to, as most people do, simply as the op amp.  The simplest

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