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

Torsional divergence, Torsional Divergence Lets first try to explain a...

Torsional Divergence Lets first try to explain and interpret torsional divergence for the aerofoil structural model physically. An additional figure describing the mechanical s

Engineering Mechanics-Statics, http://www.cramster.com/answers-apr-12/mecha...

http://www.cramster.com/answers-apr-12/mechanical-engineering/engineering-mechanics-static_2386217.aspx?rec=0

Mode iii interlaminar fracture toughness , Mode III Interlaminar Fracture T...

Mode III Interlaminar Fracture Toughness  The Mode III interlaminar fracture toughness of a composite can be measured using the split cantilever beam (SCB) geometry. Here, a c

What is eft?, What Is EFT? EFT is short for Electronic Funds Transfer in...

What Is EFT? EFT is short for Electronic Funds Transfer in finance. An EFT is a method of transferring money from one bank account directly to another account without any paper

Bragg''s spectrometer , It consists o a source of x ray, with a number of c...

It consists o a source of x ray, with a number of collimated slits. Crystal under investigation is mounted on a table, and the position of this table can be recorded on vernier sca

Electronic , how to work ever moll models

how to work ever moll models

Capital management solutions, Objective of corporate financing Corporat...

Objective of corporate financing Corporate finance control is a division of financial that refers to the control of money of an organization. The attention of corporate financi

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

Heat and mass transfer, 1. Air at 1 atm, 90F, and 8 ft/s enters a thin-wall...

1. Air at 1 atm, 90F, and 8 ft/s enters a thin-walled tube of 4-in diameter. The tube surface temperature is maintained at 60F. Air exits the tube at 70F. Determine the length of t

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