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

Aircraft maintance, Explain different types of intakes of aircraft

Explain different types of intakes of aircraft

Assignment, Real time processing is suitable when it is necesssary to have ...

Real time processing is suitable when it is necesssary to have the latest information in the following types of business operations

Circuit analysis, One thing I have always thought that experienced repair p...

One thing I have always thought that experienced repair people knew about was circuit analysis. I always imagined that when looking at schematics I would be able to figure the vol

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

Measurement uncertainty, Real measurements never deliver the true value of ...

Real measurements never deliver the true value of the physical quantity or measurand. The measurement uncertainty consists of a random error and a systematic error. Most of the err

Apu engine, APU Engine APU engines usually consist of a centrifugal com...

APU Engine APU engines usually consist of a centrifugal compressor and a radial turbine however, axial compressors and turbines may be added or used in their own right. Centrif

Capital budgeting process, Capital budgeting process: When investing in a l...

Capital budgeting process: When investing in a long term assets, the project has been evaluated in term of its profitability and expected cash flow in the future. The capital budge

Dsp, h(t) is an analog IIR filter, with the poles lambda_1 = -1, lambda_2 =...

h(t) is an analog IIR filter, with the poles lambda_1 = -1, lambda_2 = -1+i, lambda_3 = -1-i and no zeros. let h[n] be a digital IIR filter with poles which defined by e^lambda_i a

Frequency warping, main difference between warping and without warping

main difference between warping and without warping

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