Electrical ice protection systems, Other Engineering

Assignment Help:

Electrical ice protection systems:

Electrical ice protection systems are used on most turbo-props.  Resistance wire heater elements are embedded in rubber and cemented from the root to about 2/3rds of the blade's length along the leading edge.  The rubber is usually protected by a wire gauze to withstand light stone damage and erosion.  Often the aerodynamic spinner and engine intake lip are also protected from ice formation using this method.

 

365_ELECTRICAL ICE PROTECTION SYSTEMS.png

 

This type of ice protection system works on the cyclic principle.  The current is fed to the propeller blades, spinner, and the engine intake lip by an automatic time switch.  Part of the intake lip is continuously heated.  This method ensures that the areas that have de-iced do not turn to water and then flow backwards to freeze again on the unheated trailing edge.  The cyclic method also conserves electrical power so a smaller alternator can be installed.

The cyclic timers have two speeds to use under differing ambient temperature conditions.

Fast is used at temperatures from -6°C to +10°C when icing conditions are prevalent, e.g. in rain or clouds.

Slow is used at temperatures of -6°C and below.

The operation of the cyclic de-icing system is usually indicated by flashing lights (usually green or blue) or an ammeter showing the current consumed by the elements.  Some aircraft have a phase test switch which enables the operator to check the current drawn from each phase of the a.c. supply.  A typical control and test
panel is shown in fig.

1817_ELECTRICAL ICE PROTECTION SYSTEMS1.png


Related Discussions:- Electrical ice protection systems

Digital frequency meter, Explain block diagrams of digital frequency meter ...

Explain block diagrams of digital frequency meter and describe function of each part

Capital budgeting decisions, Capital Budgeting Decisions The most important...

Capital Budgeting Decisions The most important function of a finance manager is the efficient allocation of its capital. The investment decision of a firm is termed as capital budg

Medical Optics, what are wavefronts and how are they useful in the field o...

what are wavefronts and how are they useful in the field of optics and medicine?

CRO, different types of switches used in CRO

different types of switches used in CRO

Centrifugal flow - compressors in aircraft, Centrifugal flow - Compressors ...

Centrifugal flow - Compressors in Aircraft: The centrifugal impeller is rotated at high speed by the turbine and centrifugal action causes the air between the impeller vanes to

Homework, name the functions of the CIPM

name the functions of the CIPM

Single acting turbo prop operation - propeller control , Single acting turb...

Single acting turbo prop operation: Before moving on to double acting propellers the following diagram and explanations will help the student consolidate the information listed

Tool life, hi I''m doing research in tool life of solid carbide endmills ...

hi I''m doing research in tool life of solid carbide endmills and I was looking at your formulas. I was wondering if tell me or where I can find the data required for these formu

Automated Part Processing, merits of laser light curtains in terms of cost,...

merits of laser light curtains in terms of cost,ease-of-use,flexibility.

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