Write an ESSAY on what you understand about: 1. Anti- Ice and De-ice 2. Type of Ice 3....

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Mechanical Engineering

Write an ESSAY on what you understand about:
1. Anti- Ice and De-ice
2. Type of Ice
3. Type of ice accretion detectors
4. Areas need for protections
5. 4 principle of Anti-ice
6. Rain protection.

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3.7 Ratings (316 Votes)

Antiicing systems prevent the formation of ice aircraftsurfaces while the deicing systems remove the ice after it isformed Antiicing systems can be active or passive In generalmost of the active antiicing systems are thermal which use theengine bleed air routed through the pipes in wings engine intakesetcAnother method of antiicing is to have resistive circuits inwings which can be generate heat when current is passedpreventing ice formation This can be used also in deicing mode toremove ice which is more energy efficient compared to theantiicing modeOne of the oldest deicing method was the pneumatic one whichuses an inflatable rubber boot to remove accumulated ice fromleading edges of wingsIce protection systems are designed to keepatmospheric ice from accumulating on aircraft surfacesparticularly leading edges such as wings propellers rotorblades engine intakes and environmental control intakes If iceis allowed to build up to a significant thickness it can change theshape of airfoils and flight control surfaces degrading theperformance control or handling characteristics of the aircraftAn ice protection system either prevents formation of ice orenables the aircraft to shed the ice before it can grow to adangerous thicknessPneumatic Deicing bootseditThe pneumatic boot is usually made of layers of rubber with oneor more air chambers between the layers If multiple chambers areused they are typically shaped as stripes aligned with the longdirection of the boot It is typically placed on the leading edgeof an aircrafts wings and stabilizers The chambers are rapidlyinflated and deflated either simultaneously or in a pattern ofspecific chambers only The rapid change in shape of the boot isdesigned to break the adhesive force between the ice and therubber and allow the ice to be carried away by the relative windflowing past the aircraft However the ice must be carried awaycleanly from the trailing portions of the surface or it couldrefreeze behind the protected area Refreezing of ice in thismanner was a contributing factor to the crash of American EagleFlight 4184Certain older designs of pneumatic boot were subject to aphenomenon known as Ice Bridging If the ice had See Answer

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