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 The Pawl has to be withdrawn by P.C.U. action before the blades can move to a finer pitch.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

Governing equations of typical section aerofoil, We recall the "typical sec...

We recall the "typical section" aerofoil model with oscillating pitching and plunging motions to represent the torsional and bending behaviour of a wing structure with large aspect

Power engine - aircraft maintenance, Power Engine: Power producing engi...

Power Engine: Power producing engines come in two main forms Turboprop and turboshaft. a. Turboprop Engines. Turboprop engines extract most of the energy from the gas stream

Riveting, Riveting  is a fixed fastening procedure in which the end of the ...

Riveting  is a fixed fastening procedure in which the end of the metal pin is pressed over or spread out by hammering operation. Wrought iron and steel are used for the riveting an

Clamping circuit, draw and explain the working of a positive clamping circu...

draw and explain the working of a positive clamping circuit?

Shelf list filing - library management, Shelf List Filing   Shelf list ...

Shelf List Filing   Shelf list reflects the arrangement of documents in the library. That is to say, the classificatory arrangement of the documents in a library can be seen th

Uncertainty propagation, Uncertainty propagation In order to calculate ...

Uncertainty propagation In order to calculate the error of a quantity derived from a mathematical formula which has measured variables with errors, one should use the uncertain

Skin-core debonding in sandwich structures, If the skins are peeled from th...

If the skins are peeled from the core, a sandwich structure loses its strength and stiffness. This can occur under - wave-slamming in fast ferries - rapid depressurisati

Determine the log mean temperature, A tubular heat exchanger is being used ...

A tubular heat exchanger is being used for heating a liquid food from 30 o C to 70 o C. The temperature of the heating medium decreases from 90 o to 60 o C. a) Is the flow conf

Weighted average cost of capital, 3. Earthway Corporation has target capit...

3. Earthway Corporation has target capital structure of 60 percent common stock, 5 percent preferred stock and 35 percent debt. Its cost of equity is 12.5 percent, the cost of pr

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