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SFC - SATM > Ch 1: Effects of Controls > Flashcards

Ch 1: Effects of Controls Flashcards

1
Q

Relative Airflow, (RAF) & how it acts? (Pg 9)

A

Direction of airflow, acts parallel and opposite to direction of flight path.

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2
Q

Angle of Attack (AoA) (Pg 9)

A

Angle between chord line and Rel. Airflow.

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3
Q

Axis (Pg 9)

A

Imaginary line which object/body (aircraft) rotates.

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4
Q

Centre of Gravity (CoG) (Pg 9)

A

Point at which gravity can be considered to act through. In uniform gravity it is equal to centre of mass

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5
Q

Aerofoil (Pg 9)

A

Cross-section of shape designed to generate lift as it moves through liquid or gas

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6
Q

Camber (Pg 9)

A

Curvature of aerofoil. Measured at the maximum distance between the mean camber line and chord line.

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7
Q

4 factors which will affect the Total Reaction (Pg 9)

A

Angle, Airspeed (speed of Airflow), Area (surface area of the flight control), Air Density

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8
Q

Lateral Axis (Pg 10) –>

A

Pitch

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9
Q

Normal/Vertical Axis (Pg 10) –>

A

Yaw

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10
Q

Longitudinal Axis (Pg 10) –>

A

Roll

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11
Q

Where do the 3 axes meet? (Pg 10)

A

Centre of Gravity (CoG)

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12
Q

Aileron primary effect is… (Pg 11)

A

Roll

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13
Q

Why primary effect of aileron… (Pg 11)

A

The opposite aileron of turn deflects down into RAF = increase of lift, and downward force on turning side aileron

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14
Q

Rudder primary effect is… (Pg 11)

A

Yaw

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15
Q

Why rudder primary effect is… (Pg 11)

A

eg. To yaw right, right pedal pushed = rudded deflected right, causing RAF to move tail left, causing yaw right.

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16
Q

Stabliator/Elevator primary effect is… (Pg 11)

A

Pitch

17
Q

Why stabliator/elevator primary effect is… (Pg 11)

A

Stabliator deflects into direction of control column into RAF causing increase in lift

18
Q

Aileron secondary effect is… (Pg 11)

A

Yaw

19
Q

Why aileron secondary effect is… (Pg 11)

A

2 components to this reaction:
- Down-going aileron will suffer increase in drag = Adverse Yaw, (acts contrary to direction of roll), can be combated with use of rudder.
- Sideslip or sideways sliding motion towards down-going wing causing yaw in direction of roll

20
Q

Define Adverse Yaw (Pg 11)

A

Undesirable tendency to yaw in opposite direction of roll

21
Q

Rudder secondary effect is… (Pg 12)

A

Roll

22
Q

Why rudder secondary effect is… (Pg 12)

A

When yawed, advancing wing travelling at higher speeds and generates more lift, imbalance of lift causes roll in same direction as yaw.

23
Q

Stabliator/Elevator secondary effect is… (Pg 12)

A

No secondary effect/Airspeed

24
Q

Why Stabliator/Elevator secondary effect is… (Pg 12)

A

Change in pitch change in airspeed occurs

25
Q

Engineer’s Lift Formula (Pg 12)

A

Lift = (CL)(1/2)(PV∧2)(S)

26
Q

At higher IAS, ALL surface controls become… (Pg 12)

A

More sensitive and more effective

27
Q

If engineer’s formula is considered, as V (velocity) over control surface is increased, lift generated will… (Pg 12)

A

Increase

28
Q

Carburettor Heat is… (Pg 13)

A

Ancillary/Secondary controls

29
Q

Carby heat is used to… (Pg 13)

A

Direct hor air into carburettor to prevent/melt ice

30
Q

Mixture is… (Pg 13)

A

Ancillary/Secondary controls

31
Q

Mixture is used to… (Pg 13)

A

Adjust fuel to air ratio to achieve optimum engine performance/economy at different altitudes

32
Q

Throttle is… (Pg 14)

A

Ancillary/Secondary controls

33
Q

Throttle is used to… (Pg 14)

A

Responsible for governing propeller RPM/Power

34
Q

Flaps are… (Pg 15)

A

Ancillary/Secondary controls

35
Q

Flaps are used to… (Pg 15)

A

Increase lift, or increase drag

36
Q

Trim is… (Pg 15)

A

Ancillary/Secondary controls

37
Q

Trim is used to… (Pg 15)

A

Relieve control pressures in steady flight

38
Q

What speed is used to taxi? (Pg 16)

A

1000 rpm

SFC - SATM (12 decks)

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