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

Engine vibration indication, Engine Vibration Indication The engine vib...

Engine Vibration Indication The engine vibration monitoring (EVM) system shows the out of balance force for the N1 and N2 shaft. High engine vibration shows engine damage or

Installation of propeller, INSTALLATION OF PROPELLER The method of inst...

INSTALLATION OF PROPELLER The method of installation will depend on the type of propeller, and all instructions detailed in the appropriate AMM should be carefully followed; th

Composite materials - notation of axes, Notation for Body Axes The stan...

Notation for Body Axes The standard notation for the body axis sytem for aircraft dynamics. This sectionexplains the significance of the term body axis and develops the non-lin

Clamper, what is clampers and how many types

what is clampers and how many types

Finance.., hi, I need to do this question but I couldn''t capable to do i...

hi, I need to do this question but I couldn''t capable to do it. so can you tell me how much money I can give you to be done? How would you value the price of a Microfinance I

Mr Rhino, Which range will you select when measuring for 240ohms resistor?

Which range will you select when measuring for 240ohms resistor?

Centrifugal flow - compressors in aircraft, Centrifugal flow - Compressors ...

Centrifugal flow - Compressors in Aircraft: The centrifugal impeller is rotated at high speed by the turbine and centrifugal action causes the air between the impeller vanes to

Crude oil assy, what is the importance of cetane number in crude oil assy?

what is the importance of cetane number in crude oil assy?

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