ANALYSIS OF AIRCRAFT ICING &

ITS PREVENTIVE MEASURES

by :Onkar A. UpareR.M.D. Sinhgad School of Engineering, Pune

LITERATURE REVIEW Fikret Caliskan , Chingiz Hajiyev

The paper aims at the detection and identification of airframe

icing using statistical properties of aircraft dynamics and reconfigurable control protecting aircraft from hazardous icing conditions.

Guo fan , Chang shinan This paper describes the principle of electro-impulse de-icing

(EIDI) system of an aircraft which use electromagnetic force to remove ice.

Mark G. Potapczuk The research paper covering the icing environment,

investigations into the physics of ice accretion on aircraft surfaces,engine performance, icing instrumentation development etc.

INTRODUCTION In aviation, aircraft icing  are those atmospheric

conditions that can lead to the formation of water ice on the surfaces of an aircraft.

EFFECTS OF ICING

ACCIDENTS Aircraft icing is one of the major weather hazards to

aviation and has resulted in several fatal accidents.

CAUSES OF ICING

1. Liquid Water Content

(LWC)

Amount of available water

Varies from cloud to

cloud

Varies within same cloud

2. Temperature

Most icing tends to occur at temperatures between 0°and -20°C

More than 50% of those occur between -8 and -12°C

CAUSES OF ICING

CAUSES OF ICING

3. Water Droplet Size

Icing patterns change with droplet size.

In relation to icing hazards–Droplet size not as important as LWC and Temperature

TYPES OF STRUCTURAL ICE

ICE DETECTION

ICE DETECTION

1. Lucas ice detection system

ICE DETECTION

Vibro Meter

ICING PREVENTION AND REMOVAL Pneumatic deicing boots Thermal

Electrical heating elements ThermaWing Turbine engine bleed air

Electro-mechanical Weeping Wing Electro-Mechanical Expulsion Deicing System

(EMEDS) Hybrid Electro-Mechanical Expulsion Deicing System

Passive (cover system mainly used in the telecoms and offshore domains) Anti icing cover

ICING PREVENTION AND REMOVAL

Pneumatic deicing boots

Rubber boot

ICING PREVENTION AND REMOVAL

Electro- Impulse De-icing System

ICING PREVENTION AND REMOVAL

Controlling Leading Edge Temperature by bleed air

ICING PREVENTION AND REMOVAL

Weeping Wing

ICING PREVENTION AND REMOVAL

De-icing fluids

ICING PREVENTION AND REMOVAL

CONCLUSION

Ice has a greater impact on aircrafts performance & may causes severe accidents.

The recent improvements results in safe flight even in severe weather conditions.

various technologies are in development .

REFERENCES Fikret Caliskan , Chingiz Hajiyev , “A review of in-flight

detection and identification of aircraft icing and reconfigurable control”, Progress in Aerospace Sciences. 2013.

Yiqun Dong, Jianliang Ai ,“Research on inflight parameter

identification and icing location detection of the aircraft”, Aerospace Science and Technology.2012.

Mark G. Potapczuk, “Aircraft Icing Research at NASA Glenn Research Center”, journal of aerospace engineering. 2013.

Giuseppe Mingione , Massimo Barocco, “FLIGHT IN ICING CONDITIONS SUMMARY”

THANK YOU