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ASTC > Fly D > Flashcards

Fly D Flashcards

1
Q

how is atmosphere pressure measured

A

barometer

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2
Q

physiology

A

how your body/body parts work

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3
Q

how high into atmosphere can humans still breathe

A

5 km

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4
Q

hypoxia

A

insufficient supply of oxygen

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5
Q

time-duration of useful consciousness (TUC)

A

the pilot can still make reasonable decisions.

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6
Q

what are symptoms of hypoxia

A
  • impared cognitive skills
  • headache, dizziness
  • peripheral vision fail
  • unconsciousness
  • death
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7
Q

armstrong altitude/limit

A

your saliva boils because of the difference in body heat and higher altitude temperature

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8
Q

what happens to aircraft when air is thinner

A

reduced ability to takeoff

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9
Q

ideal gas law

A

density decreases when pressure decreases/temperature increases

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10
Q

pressure altitude

A

altitude estimated from atmospheric pressure alone

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11
Q

density altitude

A

the altitude the aircraft feels, regardless of how high its flying

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12
Q

soaring

A

staying aloft due to atmospheric updrafts

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13
Q

thermals

A

when sunlight heats the ground, the air touching the ground is warmed and rises

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14
Q

convective boundary layer

A

layer of thermals, more polluted than clear air above

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15
Q

cloud streets

A

cumulus clouds at the top of rows of thermals

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16
Q

anabatic cumulus

A

clouds that form above anabatic winds

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17
Q

anabatic winds

A

warm updrafts along mountain slopes

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18
Q

valley wind

A

wind blowing upstream in a valley

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19
Q

orographic thunderstorms

A

mountain-related thunderstorms

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20
Q

Clear-air turbulence (CAT)

A

windshear turbulence outside of thunderstorm cloud

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21
Q

jet stream

A

rough winds at 6-12 km altitude

22
Q

K-H waves

A

wind shear across statically stable region

23
Q

billow clouds

A

strips of clouds (Fluctus)

24
Q

downburst

A

rapidly descending downdrafts

25
Q

virga

A

precipitation that evaporates before hitting the ground

26
Q

buoyancy force

A

rain-cooled air sinking under hot air rising

27
Q

microburst

A

short but damaging downbursts

28
Q

outflow winds

A

air spreads out in horizontal directions away from impact point

29
Q

gust front

A

leading edge of outrushing winds

30
Q

low-level wind shear

A

sudden change of windspeed direction

31
Q

arc cloud

A

low-altitude cloud caused by moisture hit by gust front

32
Q

glideslope

A

descending path toward the runway

33
Q

holding pattern

A

area pilots fly if they have to wait to land

34
Q

lightning

A

long spark

35
Q

where can a lightning stroke occur

A
  • between cloud and ground
  • between adjacent clouds
  • within single cloud
  • between cloud and thin air
36
Q

graupel

A

small hailstones

37
Q

why does lightning form

A

collision of small ice crystals and graupel in a thunderstorm

38
Q

corona

A

discharging static electricity from extremities of aircraft

39
Q

hailstones

A

irregularly shaped balls of ice

40
Q

hail

A

hailstones falling from sky

41
Q

hail swath

A

damage on ground due to hailstorm

42
Q

terminal fall velocity

A

fall speed of hail increases with size

43
Q

hail shaft

A

column of falling hailstones below cloud base

44
Q

is hail dangerous to aircraft

A

extremely

45
Q

tornadoes

A

violently rotating columns of air between thunderstorms

46
Q

cumulonimbus clouds

A

tornadoes

47
Q

funnel cloud

A

funnel of water condensation

48
Q

debris cloud

A

dirt and debris stirred up from ground

49
Q

what makes a tornado visible

A

funnel cloud and debris cloud

50
Q

what scale rates tornadoes

A

Enhanced Fujita scale

ASTC (6 decks)

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