Oil supply failure - propeller, Other Engineering

Assignment Help:

Oil supply failure - Propeller:

To prevent an overspeed caused by an oil supply failure, one of two methods may be employed:

• Hydraulic lock valve The pitch lock mechanism houses a valve called the 'hydraulic lock valve'. This is a spring loaded ball valve opened by fine pitch oil pressure and closed by a spring. In the event of an oil supply failure the hydraulic lock valve closes and acts like a non-return valve to trap coarse pitch oil in the pitch change cylinder. The oil trapped in the cylinder prevents centrifugal twisting movement (CTM) from turning the propeller blades towards fine pitch without affecting the feathering ability if the propeller.

2263_oil supply faliure.png

• Mechanical locking device  A rachet mechanism allows the propeller to move to coarse pitch and to be feathered. The Pawl has to be withdrawn by P.C.U. action before the blades can move to a finer pitch.

426_oil supply faliure1.png


Related Discussions:- Oil supply failure - propeller

Architectural graphics, How to draw schiography in a perspective view of an...

How to draw schiography in a perspective view of an object

Auxiliary power unit oil system, Auxiliary power unit oil System: A sum...

Auxiliary power unit oil System: A sump at the bottom of the gearbox collects the returning oil, in some APU's the rear face of the sump is finned and let into the intake plenu

Forgin exchange, The following exchange rates are available to you. (You ca...

The following exchange rates are available to you. (You can buy or sell at the stated rates.) Mt. Fuji Bank ¥85.00/$ Mt. Rushmore Bank SF1.356/$ Mt. Blanc Bank ¥64.74/SF Assume t

What is the difference between real money & nominal money?, What is the dif...

What is the difference between real money & nominal money? 1) Nominal cash is related to the measure of counting. Moderate figure is what is written on the bill. Whereas actual

Land serveying, list out the errors in lenier measurment

list out the errors in lenier measurment

Combustion chamber injection system - aircraft engine , Combustion chamber ...

Combustion chamber injection system: Injecting a water or water/methanol mixture into the combustion chambers increases the mass flow through the turbine and the high volumetri

Limitations of the powder metallurgy process, Q. What are the limitations o...

Q. What are the limitations of the powder metallurgy process ? How are some of these overcome ? Ans. Limitations : 1. Dies and equipment costs are high. So, the process

Manual override relays, Manual override relays: When the manual-overrid...

Manual override relays: When the manual-override relays are not energised, this current flows through brushes riding on slip rings mounted on the propeller spinner bulkhead and

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