Auxiliary Midterms 2

Question 1

effects of icing

Answer 1

lift decreases, thrust decreases, weight increases, drag increases, stalling speed increases

Question 2

clouds have no ice but have

Answer 2

supercooled water droplets

Question 3

when droplets hit the aircraft, they change from ____ to ____

Answer 3

liquid water, solid ice

Question 4

negative effect on the aerodynamics and a higher weight

Answer 4

engine [ice formation on engine]

Question 5

clouds have no ice but have supercooled water droplets. when this droplets hit the aircraft they change from liquid water to solid ice

Answer 5

wings [ice formation on wings]

Question 6

has milky white appearance and generally follows the surface closely

Answer 6

rime

Question 7

sometimes clear and smooth but usually contain some air pockets that result in a lumpy translucent appearance, denser, harder, and more difficult to break.

Answer 7

clear/glaze

Question 8

brittle and frost-like

Answer 8

rime

Question 9

hard and glossy

Answer 9

clear

Question 10

hard rough conglomerate

Answer 10

mixed

Question 11

removal of the ice after it has performed

Answer 11

de-icing

Question 12

employed in certain types of piston-engine and turbo-prop aircraft

Answer 12

pneumatic de-icing system (boots)

Question 13

pneumatic de-icing system (boots) consists of:

Answer 13

air supply; air distribution system; pneumatic de-icer boots; controls and indications

Question 14

when pneumatic de-icing system is switched on?

Answer 14

pressure is admitted to the pneumatic boot (cyclically) sections to inflate the tubes. Ice breaks up and is carried away by the air flow

Question 15

air is dumped to atmosphere via?

Answer 15

valves

Question 16

pneumatic de-icing system operates on a?

Answer 16

timed cycle with each section for about 20 seconds and then off for about 80 seconds

Question 17

tubes are then fully deflated by a ___

Answer 17

vacuum supply

Question 18

when pneumatic de-icing system is off?

Answer 18

vacuum is continually supplied and used to hold boots flat agains the wing

Question 19

susceptible to damage by?

Answer 19

refueling and bright sunlight

Question 20

do not operate until? (pneumatic de-icing system)

Answer 20

after ice has formed

Question 21

used primarily on small turbo-jets (business jet types)

Answer 21

fluid de-icing system (weeping wing)

Question 22

what is drawn from a storage tank by electrically driven pump and fed through micro-filters to a number of porous metal distributor panels

Answer 22

de-icing fluid (glygol)

Question 23

De-icing fluid (glycol) is drawn from a storage tank by?

Answer 23

electrically driven pump and fed through micro-filters to a number of porous metal distributor panels

Question 24

formed to profile of the wing to which they are fitted

Answer 24

panels

Question 25

as fluid escapes?

Answer 25

it breaks the adhesion between the ice and the wing and the airflow carries it away

Question 26

as fluid escapes it breaks the adhesion between __ and the ___ and the ____ carries it away

Answer 26

ice and the wing

Question 27

As fluid escapes, it breaks the adhesion between the ice and the wing and?

Answer 27

airflow carries it away

Question 28

ensures an even distribution through all wing areas

Answer 28

head compensating valve

Question 29

amount of fluid that can be carries

Answer 29

limiting factor

Question 30

operate only after? (fluid de-icing system)

Answer 30

after ice has formed

Question 31

If another plane is waiting to come into that gate, deicing a departing plane will?

Answer 31

only slow down that process

Question 32

deicing fluids deplete?

Answer 32

the oxygen from water

Question 33

deicing fluids deplete the oxygen from water, and airports don't want the fluids going into the?

Answer 33

storm water drains

Question 34

where do the fluids drain into a special tank or reservoir?

Answer 34

deice pad

Question 35

also known as Glycol

Answer 35

Heated orange fluid called Type 1

Question 36

is sprayed evenly over the affected areas, melting whatever was sticking to it

Answer 36

Heated orange fluid called Type 1

Question 37

whatever was sticking to it. Type I is mixed with? and what ratio?

Answer 37

water, usually at a ratio from 40% to 60%

Question 38

Heated orange fluid called Type 1 smells a lot like?

Answer 38

maple syrup

Question 39

The mixture can be ___ or ____ based on the outside air temperature

Answer 39

diluted or thickened

Question 40

are designed to remain on the wings of an aircraft during ground operations, thereby providing anti-icing protection

Answer 40

Type II fluids

Question 41

Type II fluids should be used on aircraft with rotation speeds (Vr) above?

Answer 41

above 100knots unless otherwise specified by the aircraft manufacturer.

Question 42

are designed for aircraft that have a shorter time to rotation

Answer 42

Type III fluids

Question 43

Type III fluids should make it acceptable for some aircraft that have rotation speeds (Vr) of?

Answer 43

less than 100knots unless otherwise specified by the aircraft manufacturer.

Question 44

green, thicker, not heated, and is used to protect the critical surfaces from accumulation of frozen precipitation

Answer 44

Type IV

Question 45

Type IV fluids is used to protect the?

Answer 45

critical surfaces from accumulation of frozen precipitation while the plane waits to take off

Question 46

This fluid slides off the wings as the plane takes off

Answer 46

Type IV