Propeller track, Other Engineering

Assignment Help:

PROPELLER TRACK

An out of track propeller will suffer an imbalance caused by the Dynamic and Aerodynamic being out of balance.

Propeller track is the path followed by a blade segment in one rotation. If one blade does not follow in the same track as the others, its angle of attack and thus the thrust it produces, is different to the remaining blades, and vibration will result.

A simple blade tracking check would entail, chocking the wheels to prevent the aircraft from moving. Place a board under the propeller so the blade tip ‘nearly' touches it. Mark the board at the tip of the propeller, and then rotate the propeller until the next blade approaches the board...mark the second blade position. Repeat for all blades. It can be observed from the marks generated, the extent of tracking deviation between blades. The amount that blades can be out of track is specified in the relevant Aircraft Maintenance Manual (AMM).

1759_propeller trak.png

For information only, an average ‘maximum' permitted deviation in track is 0.25 inches. Wherever possible the pointer should be attached to the aircraft structure to avoid the possibility of aircraft movement during the check.
Small propellers may be checked using a special mandrel, a surface table and a height gauge.

 

 

 

950_propeller trak1.png


Related Discussions:- Propeller track

Diod, i donot under stand about diod and transistor

i donot under stand about diod and transistor

Bio physiology Matlab Simulink Models, Review the lecture on BB document “P...

Review the lecture on BB document “Pharmacology …..” slide 6 where the solution for a 1st order system was demonstrated. The generic system is A(X)?(K1)?B(Y)?(K1’)?C(Z) 1. Cr

Negative equity, An accountant says that your firm has negative equity so ...

An accountant says that your firm has negative equity so the firm is bankrupt. discuss ?

sweep effects, In the previous discussion, we investigated the static aero...

In the previous discussion, we investigated the static aeroelastic behaviour of straight (unswept) wings. These wings are characterised by an effective decoupling of wing bending a

Secondary operations in powder metallurgy methods, Q. What are the secondar...

Q. What are the secondary operations we apply in powder metallurgy methods. Give their use also. Ans. Secondary Processes of Manufacture : In addition to the basic proce

Analyze an organization''s competition, Briefly explain how to analyze an o...

Briefly explain how to analyze an organization''s competition Answer: In order to analyze an organization’s competition, the following aspects need to be checked and recorded in o

Fuel control in aircraft engine, Fuel control in Aircraft Engine: ...

Fuel control in Aircraft Engine: The basic fuel system is comprised of a fuel pump that receives low-pressure fuel from the aircraft fuel tank via a low pressure fuel valv

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