Primary Flight Controls
What are the three axis on an aircraft and primary flight controls that control the aircraft about each of those axis
Longitudinal – Ailerons (Roll- Lateral Stability)
Lateral – Elevators (Pitch- Longitudinal Stability)
Vertical – Rudder (Yaw- Directional Stability)
Page 9 fig 1-5 and 269
Which type of tab is used to increase the force required to move the primary control surface?
Balance tab
Trim tab
Anti-servo tab
Spring tab
Servo tab
Anti Servo Tab
Page 279 #3
What is standard day pressure and temperature at sea level
Pressure: 29.92 in. Hg or 14.7 psi
Temperature: 59˚F or 15˚C
Page 7 Fig 1-2
How are changes in direction of a control cable accomplished?
A) Fairleads
B) Bell cranks
C) Pulleys
Pulleys
Which statement is correct concerning torque effect on helicopters?
A)Torque direction is the opposite of rotor blade rotation
B) As horsepower decreases, torque increases
C) Torque direction is the same as rotor blade rotation
A)Torque direction is the opposite of rotor blade rotation
What are elevators used for and what axis is it apart of?
Pitch Control
Lateral Axis
Page 271
The type of tab that can be directly controlled by the cockpit to produce an aerodynamic force that moves the primary control surface is a
Balance tab
Trim tab
Anti-servo tab
Spring tab
Servo tab
Servo Tab
Page 40 and 273 (#3)
Lift produced by a body displacing a greater weight of air than its own weight is called?
Aerostatic Lift
Page 5
What could happen if a flight control surface is out of static balance in flight?
Flutter or excessive vibration
Page 294 (#4)
What is relative wind?
The direction of the airflow with respect to the blade
The movable control surface on a V-tail airplane act as both elevators and rudders. These surfaces are called _____________.
Ruddervadors
Page 273
What is a Fly-By-Wire system?
A method of control where the pilot controls are sent to a computer where the flight controls are tailored to the flight characteristics of that specific aircraft. Those signals are sent to actuators and motors that move the control surfaces.
What is known as stalling of a wing?
The boundary layer on top of the wing separates causing turbulence and a loss of lift, usually caused by too higher AOA
Page 14
The method that should be used for leveling an aircraft for proper assembly and rigging may be found in the _______________ for the aircraft.
Type Certificate Data Sheet
What are the 4 forces acting on a helicopter rotor?
Centrifugal Force
Torque
Thrust
Gyroscopic Procession
Name three aircraft flight control surface operating methods
Cable systems
Push-Pull rods
Torque tubes
Fly-by-wire systems
Fly-by-light systems
Page 281-285
What are two types of secondary flight controls?
- Devices that modify lift
- Devices that change the operating forces.
The four basic forces that act on an airplane during flight is?
Thrust, Lift, Drag, Weight
Page 9
When safetying a turnbuckle with safety wire, the safetying must terminate with at least_______ wraps of the safety wire around the turnbuckle ends.
Four
Page 299
The main rotor of a single-rotor helicopter rotates to the ___________ (right or left) as viewed from above.
Left
Page 308
The aileron that moves upward travels a __________ (greater or lesser) distance than the aileron that moves downward.
Greater
Page 269
Flight spoilers may be extended the same amount on each wing to act as_____________.
Speed Brakes
Page 270
Five factors that affect aerodynamic lift are?
Shape of the airfoil section, Area of the airfoil, Air Density, Speed of the air relative to the airfoil surface, Angle of Attack.
Page 11
What tool is used to adjust tension on the control cables?
Tensiometer
Which helicopter control would normally incorporate the throttle to control engine power?
Collective pitch control
Page 53 (#2)