Great Planes Ultra Sport 1000 Kit - GPMA0425 - Manual (Page 55)

TRIM FEATURE MANEUVERS OBSERVATIONS CORRECTIONS
CONTROL
CENTERING
CONTROL
THROWS
ENGINE
THRUST
ANGLE
CENTER OF
GRAVITY
LONGITUDINAL
BALANCE
Fly general circles and
random maneuvers
Random maneuvers.
From straight flight,
chop throttle quickly
From level flight roll to
45 degree bank and
neutralize controls
Try for hands off straight and
level flight
A Too sensitive jerky
controls
B Not sufficient control
A Aircraft continues level
path for short distance
B Plane pitches nose up
C Plane pitches nose down
A Continues in bank for
moderate distance
B Nose pitches up
C Nose drops
Readjust linkages so that
Tx trims are centered
If A change linkages to
reduce throws
If B, increase throws
If A, trim is okay
If B decrease downthrust
If C increase downthrust
If A, trim is good
If B add nose weight
If C remove nose weight
SPLIT ELEVATORS
(Also Yaw and
C G )
YAW2
LATERAL
BALANCE
AILERON
RIGGING
WING
INCIDENCE
Into wind do open loops
using only elevator
Repeat tests doing
outside loops from
inverted entry
Into wind do tight inside
loops or make straight up
climbs into Hammerheads
Do same from inverted
entry
With wings level pull
to vertical climb and
neutralize controls
Knife edge flight
Into wind pull open
loops using only elevator
Repeat tests doing outside
loops to inverted entry
A Wings are level throughout
B Plane tends toward outside
when right side up and to
inside when inverted
C Plane goes in on regular
loops and out on inverted
D Plane goes out on both
types of loops
E Plane goes in on both
types of loops
A Wings are level throughout
B Yaws to right in both
inside and outside loops
C Yaws to left in both
inside and outside loops
D Yaws right on insides and
left on outside loops
E Yaws left on insides and
right on outside loops
A Wings are level and plane
falls to either side
randomly in Hammerhead
B Falls off to left in both
inside and outside loops
Worsens as loops lighten
C Falls o f f to right in both
loops Worsens as loops
tighten
D Falls off in opposite
directions on inside
and outside loops
A Climb continues along
same path
B Nose tends to go to
inside loop
C Nose tends to go to
outside loop
A Models tends to veer
in nose up direction
B Model veers in nose
down direction
If A trim is fine
If B add weight to right
wing, or add right rudder
If C add weight to left
wing or add left rudder
If D raise right half of
elevator (or lower left)
If E raise left half of
elevator (or lower right)
If A trim is correct
If B, add left rudder trim
If C, add right rudder trim
If D, add left aileron trim
If E, add right aileron trim
If A, trim is correct
If B, add weight to right
wing tip
If C add weight to left
wing tip
If D, change aileron trim 3
If A, trim is correct
If B, raise both ailerons
very slightly
If C lower both ailerons
very slightly
If A, reduce wing incidence
If B, increase wing incidence
1 Engine thrust angle and C G interact Check both
2 Yaw and lateral balance produce similar symptoms Note that fin may be crooked Right and left references are from
the planes vantage point
3 Ailerons cannot always be trimmed without sealing the hinge gap
55