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

Physical chemistry, can you answer some problem from physical chemistry wit...

can you answer some problem from physical chemistry with a detailed approach why and how one should choose the steps in solving them.These are just random question that I have no c

#LED MOVING DISPLAY, want a circuit manual of previous led moving dispaly

want a circuit manual of previous led moving dispaly

A/c question 1, Briefly describe a simple method of estimating summer outsi...

Briefly describe a simple method of estimating summer outside air conditions for the design calculations of an air conditioning scheme. If a more accurate assessment of heat gains

Conceptual models, Can you describe an example of a conceptual model?

Can you describe an example of a conceptual model?

Use of multicylinder engine, USE OF MULTICYLINDER ENGINE If, in a multi...

USE OF MULTICYLINDER ENGINE If, in a multi cylinder engine, power strokes are staggered, the limitation of flywheel can be overcome to a large extent. Torque diagram for 2 cyli

Avionic systems design- primed stability derivatives, Primed stability der...

Primed stability derivatives The rolling and yawing motions are coupled through the cross inertia I XZ due to rotation not being about the principal axes. Since in general air

ENMIN5018, Design a detailed surface mine excavation plan. Detail developme...

Design a detailed surface mine excavation plan. Detail development requirements. Detail Production requirements including a full description of the method selected. Number of produ

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