Ice And Rain Protection Flashcards
What are the 3 types of Ice Formation and when do they form?
CLEAR ICE or GLAZE – produces on the surface if the temperature of
droplets is between 0 and -10 deg. C
RIME ICE – produces on the surface if the temperature of droplets below -10 C
FROST – Builds on the surface of Aircraft that are parked outside in cold nights
What is the difference between the DeIcing and Anti-Icing?
- De-Icing is when there’s an ice
build up already and then it is removed - Anti-Icing is preventing ice build-up in the aircraft systems and
mainly performed during flight
What are the different kinds of DEIcing Systems?
Pneumatic De-Icing uses Rubber Boots
Electrical Wing De-Icing uses heating mats in the slats
Chemical De-Icing uses De-Icing fluids shortly before takeoff
Hot Air De-Icing uses hot air blower composed of diesel engine
What are the systems that needs an Anti-Icing System?
Wing Anti-Ice, Engine Anti-Ice,
Window Heat, Probe Heat System, Drain Mast Heat System
What are the Anti-Icing Systems used for Engine?
Hot Air Engine Anti-Icing and Hot Oil Anti-Icing
What is the valve and P/B S/W used in ENG 1 anti-icing?
Engine Anti-Ice Valve 1 is
controlled by the ENG 1 Anti-Ice P/B S/W
How many P/B S/W is used for the wing anti-ice?
Only 1 Wing Anti-Ice P/B S/W is
used for both left and right wings
What are the four different types of probes on the aircraft that uses antiicing?
Temperature Probe – operates during flight
Pitot Tubes – has low voltage on ground but operates 100% during flight
Static ports and AOA Sensor – operates at least 1 engine is running
What is the most important operation rule when operating the Windshield Wiper?
You must never switch on the
windshield wiper when the windshield is dry
What is the protection used in
Windshields?
Rain Repellent Fluid
What is the ideal contact angle of water droplets in the wind shield?
60 degrees contact angle, it means it is not easy for water droplets to remain on the windshield
DOES VERTICAL STAB HAD ANTI -ICE? AND WHY?
YES, BECAUSE IT FIRSTLY HIT ON THE WATER COLD WATER MIST
DIFFERENCE OF DE ICING AND ANTI ICING?
DE ICING MAY ICE NA ACCUMULATE ANTI ICING PREVENT ICE
3 TYPES OF ICE?
CLEAR ICE 0 TO -10DEG,
RIME ICE BELOW -10 (DOUBLE HORN SHAPE)
FROST OCCURS ON GROUND
WHEN DOES AOA PROBES HEAT UP?
When engine is running