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.

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.

 

 

Posted Date: 9/14/2012 4:44:53 AM | Location : United States

Ask an Expert

Related Discussions:- Static and dynamic balancing - propellers, Assignment Help, Ask Question on Static and dynamic balancing - propellers, Get Answer, Expert's Help, Static and dynamic balancing - propellers Discussions

Write discussion on Static and dynamic balancing - propellers
Your posts are moderated

Write your message here..

Related Questions

Evolutionary growth approach, Evolutionary Growth Approach Mimic how bo... Evolutionary Growth Approach Mimic how bones / plant roots add material to regions under high stress and reduce material where there is small stress • Apply load to structure

Thermo electric thermometer, how thermoelecteric thermometer is contructed ... how thermoelecteric thermometer is contructed and how it working

Digital electronics, i got a msg from u is that Dear Tutor ... i got a msg from u is that Dear Tutor Congratulations!! You are successfully done with the process of quality check, now we are sending you the registration form

Maintenance Requirement Analysis, Ask questioA wire rope used as a crane ho... Ask questioA wire rope used as a crane hoist rope has a mean life of 530 days. The wire rope predominantly fails in a wear-out mode caused by either corrosion, abrasive wear or fat

Agricultural engineering , Agricultural engineering does not easily mean on... Agricultural engineering does not easily mean only fruits and vegetables formed from the fields. Agriculture has come up with a dissimilar  look now. When you open a paouch of chip

Capital Rationing, Capital Rationing Capital Rationing refers to a situati... Capital Rationing Capital Rationing refers to a situation where the firm is constrained for external, or self-imposed, reasons to obtain necessary funds to invest in all investmen

Design of steel structures , what does statements of loading mean ? what does statements of loading mean ?

Biomediacl instrumentation, Design a dc-coupled one op amp circuit that wil... Design a dc-coupled one op amp circuit that will amplify the 100uV EOG to have the maximal gain possible without exceeding the ttypical guarenteed linear outpt range.

Permeability of moulding sand, Permeability of Moulding Sand  is the proper... Permeability of Moulding Sand  is the property of the sand, which permits the gases and steam to escape through the sand mould. For this purpose, the sand must be porous. Permeabil

Advantages and disadvantages of hot working and cold working, Q. Describe t... Q. Describe the advantages and disadvantages of hot working and cold working processes. Explain the extrusion process. Ans. Advantages of hot working process