Static and dynamic balancing - propellers, Other Engineering

Assignment Help:

STATIC & DYNAMIC BALANCING

STATIC BALANCE

When the weight distribution about the propeller axis is equal, with the propeller in any position, it is said to have static balance.

On fixed pitch propellers an unbalanced condition (Fig. 93) can be rectified by the removal of material from heavy blades or by the addition of extra coats of paint on the lighter blades. Some propellers have weights attached to the propeller boss.

On variable pitch propellers, balance is corrected by the addition of weights at the hub, or by the installation of lead wool or washers in the hollow blade roots.

Static: Balanced when the centre of gravity acts through the Axis or Centre of Rotation.

1214_Static and dynamic balance.png

DYNAMIC BALANCE

A propeller possessing static balance may cause vibration due to the non symmetrical disposition of the mass within the propeller. Unequal weight distribution about the propeller axis can only be corrected by repeated ground runs following the addition of weights to the propeller.

Dynamic: Balanced when the blades' centres of gravity are in the Plane of Rotation.

561_Static and dynamic balance1.png

 

 


Related Discussions:- Static and dynamic balancing - propellers

Computational aerodynamics-module style, The module content and teaching st...

The module content and teaching style has undergone revision since 2006-07. There are two reasons for this. First, this was the first year that Prof Badcock was responsible for the

Electronics devices and circuits, With the help of circuit diagram and the ...

With the help of circuit diagram and the waveforms,explain the working of a negative clipper with positive biasing voltage.also explain the Same concept in series clipper circuit

Survey, what are the obstacles which are likely to encounter chain survey a...

what are the obstacles which are likely to encounter chain survey and how to overcome them.

Tin smelting, How can calculate for charging of tin smelting with reverbera...

How can calculate for charging of tin smelting with reverberatory furnaces?

Long term goals behind artificial intelligence, Artificial Intelligence ...

Artificial Intelligence Artificial Intelligence is a typical science to describe, because it has fuzzy borders with, psychology, computer science, mathematics, philosophy, stat

Finance, Derive the functional relationship between the no-arbitrage values...

Derive the functional relationship between the no-arbitrage values of the two vertical spreads.

Mass balance reactions, A continuous fractionating column separates benzene...

A continuous fractionating column separates benzene and toluene into two product streams. We were given all the mass fractions which makes this question easy because all we must ca

Composition of two simple harmonic motion at straight line, show the practi...

show the practical use of it also descibe it elaborately why it is useful which way we can use it where we use it

Image orthicon camera tube, What are the disadvantages of Image Orthicon Ca...

What are the disadvantages of Image Orthicon Camera tube

Opration research, a note on tracing a closed loop. What are the characteri...

a note on tracing a closed loop. What are the characteristic features of a closed loop?(

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