Flight Controls

Question 1

T-Tail

Answer 1

Benefits:
1. Less pitch-sensitive during power changes and adding flaps
2. Dosen’t get interfered with, with the prop wash from engines

Drawbacks:
1. At a high AOA and AFT CG it can lead to a deep stall and make elavators/stabilators less effective control surfaces
2. At low airspeeds it requires larger control deflections to create a pitch cange

Question 2

Stabilator

Answer 2

Fully moveable elavator horizontal flight surface in contrast to the fixed horizontal stabilizer and moveable elavator used on other aircraft
Includes an anti-servo and trim tab
The anti-servo tab moves the same way the stabilator does and prevents the pilot from over controlling the aircraft

Question 3

Plain flap

Answer 3

Produces the least amount of center of lift for a given AOA

Question 4

Slotted Flaps

Answer 4

Increase the lift coefficent signifanctly more then plain or spilt flaps
When the flap is lowered a duct forms between the flap well in the wing and leading edge of the flap
When it is lowered, high energy air from the lower surface is ducted to the flaps upper surface
Lets the high pressure on the lower surface of the wing onto the higher part of wing

Question 5

Differential Ailerons

Answer 5

Help us fight adverse yaw by

Question 6

Frise-type ailerons

Answer 6

Deflect upward moving aileron into the slipstream below the wings surface, creating more parasitic drag on the descending wing

Question 7

What is Adverse Yaw?

Answer 7

Natural tendency for our plane to yaw in the opposite direction of our turn

Question 8

Differential Frise-type ailerons

Answer 8

Do not completly eliminate adverse yaw, only reduce it
We maximize the benefits and minimize adverse yaw and wingtip stalling characteristics by having both