EXAM 1 OFFICIAL Flashcards

1
Q

**3 conditions for entering settling with power

multiple choice questions

A

vertical or near vertical descent rate of at lease 300 FPM
the engine must be using 20-100% power
speed less than ETL

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2
Q

**2 initial physical responses to settling with power:

A

increase airspeed with cyclic (fwd)

reduce collective pitch as attitude permits

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3
Q

**autorotation (definition)

A

an event in which no engine power is supplies, main rotor is driven by the relative wind only

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4
Q

**3 conditions for onset of dynamic rollover: (in order)

A

establish a pivot point, initiate a rolling motion, exceeding the critical angle

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5
Q

**2 Factors that effect dynamic rollover

A

human and physical

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6
Q

**what is the recommended action at the onset of dynamic rollover?

A

smooth and moderate collective reduction

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7
Q

**primary cause of retreating blade stall:

A

excessive airspeed

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8
Q

**what are the 2 symptoms of a retreating blade stall?

A

pitch up of the nose followed by a roll to the left

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9
Q

**what are the 2 initial responses for a retreating blade stall?

A

reduce collective pitch

regain control of the aircraft

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10
Q

military TAF is valid for how many hours?

A

30

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11
Q

9999 is what type of visibility

A

greater than 7 statute miles

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12
Q

ceiling definition

A

lowest layer aloft which is reported broken or overcast when skies are considered totally obscured

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13
Q

3 weather proximity stations and distances

A

OS- on station, center of runway to 5 miles
VC- in vicinity of 5-10 miles
DSNT- Distant, greater than 10 miles

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14
Q

terms for unlimited visibility

A

sky clear/ clear skies (CLR)

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15
Q

terms for layers (sky coverage not considered ceiling)

A

scattered/ few

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16
Q

terms for ceilings

A

broken/ overcast

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17
Q

When is VV used in sky coverage reporting

A

Vertical visibility is used when the skies are considered totally obscured (TO)

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18
Q

**in IMC conditions, if the static system dumps, what should your first physical action be?

(may be write in)

A

activate alternate static source

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19
Q

which instrument does the pitot tube connect to?

A

airspeed indicator

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20
Q

view altimeters barometric pressure through:

A

the kollsman window

21
Q

freezing level on standard air and PA day

22
Q

lag delay when you level off with ISVI

23
Q

which instruments would static system failure affect?

A

all 3 (airspeed indicator, altimeter, vertical speed indicator)

24
Q

how does induced flow move?

A

vertically downward

25
rotor blade coning is a compromise between what forces?
lift and centrifugal force
26
relationship of total forces to a tip path place
perpendicular
27
2 conditions for attailain ETL
horizontal flight of hovering in a headwind
28
ETL speed range
16-24KIAS
29
3 ways to compensate for tail rotor thrust (translating tendency)
left cyclic, tilt mast, left cyclic input by pilot
30
speed for transverse flow effect
10-20kts
31
4 causes of excessive coning (also retreating blade stall)
low RPM, high GWT, high G maneuvers, turbulent air
32
only way to diminish the effects induced flow
increase forward airspeed
33
what is the dominant force in the rotor system
centrifugal force. provides rigidity by taking the gravitational droop out of the blades
34
pressure and temperature at MSL / standard lapse rate
29.92Hg and 15 degrees Clapse rate is 1' per 1000 ft, 2 degrees
35
what 2 pressures affect systems?
static and dynamic pressure
36
how does total force act in relation to tip path place?
perpendicular
37
two components of total force
a. vertical acts as lift which opposes weight | b. horizontal acts as thrust which opposes drag
38
2 conditions of flight
balanced and unbalanced
39
how do pilots control blowback?
forward airspeed
40
purpose of the kollsman window
to correct barometric pressure changes
41
pressure altitude
height above standard datum plane
42
absolute altitude
hight above surface terrain or ground
43
max mechanical altimeter error
plus or minus 75 ft
44
calibrated airspeed (def)
indicated airspeed corrected for instrument
45
indicated airspeed (def)
airspeed indicated on instrument, uncorrected
46
aviators can ensure accuracy of any altimeter by regularly obtaining what along route?
current altimeter setting
47
which of newton =s laws relates to takeoff to a hover
action/reaction (3)
48
rotational relative wind
parallel and opposite to the direction of the airfoil
49
what is resultant relative wind
rotational relative wind modified by induced flow