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Maneuvers
flown during pattern contest
Precision Aerobatics
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SPORTSMAN |
|
No. |
Maneuver |
K |
|
|
1 |
Take Off Sequence(U) |
1 |
|
|
Enter Box |
|
|
|
|
2 |
Straight Flight Out (U) |
1 |
|
|
3 |
Stall Turn |
2 |
|
|
4 |
Straight Flight Back (D) |
1 |
|
|
5 |
Half Reverse Cuban Eight |
2 |
|
|
6 |
Two Inside Loops (U) |
2 |
|
|
Exit Box |
|
|
|
|
Enter Box |
|
|
|
|
7 |
Two Point Roll (D) |
2 |
|
|
8 |
Half Cuban Eight |
2 |
|
|
9 |
Cobra without Rolls (U) |
1 |
|
|
10 |
Immelmann Turn |
2 |
|
|
11 |
45 Degree Downline (D) |
1 |
|
|
Exit Box |
|
|
|
|
Enter Box |
|
|
|
|
12 |
Vertical Upline (U) |
1 |
|
|
13 |
Split "S" |
2 |
|
|
14 |
One Horizontal Roll (D) |
1 |
|
|
15 |
Half Reverse Cuban Eight |
2 |
|
|
16 |
Double Immelmann w/o Rolls (U) |
2 |
|
|
17 |
Landing |
1 |
|
|
|
Total |
26 |
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The list above is the current "Sportsman" class maneuver
schedule. It contains 17 maneuvers including Take off and
Landing. These maneuvers must be performed in the sequence
in which they are listed.
Failure to perform any maneuver in this sequence results in
a zero score for that maneuver. This list can be printed and
then cut out so that you can have it as a "Calling Card". A
Calling Card is a list of the maneuvers that you give to
your helper at a contest or during a practice session.
During competition, the flyer becomes nervous and can easily
forget those things that he has memorized. That's why he
needs a Caller. The Caller or helper will usually help the
flyer by taking the plane out to the starting point on the
runway, then returning back to stand just behind the pilot.
From that position, the helper can read aloud each maneuver
before the pilot begins the maneuver and thereby help the
pilot remember which comes next.
The symbal (U) that follows the maneuver means that
the maneuver is performed "Up Wind" and the symbal (D)
means that the maneuver is performed "Down Wind".
The following is a brief description of each maneuver. Study
them and be sure you understand each maneuver before you
start your practice. Also, get the latest copy of the AMA
Competition Regulations and study the rules carefully.
·
Take Off. The model must stand still on the ground
with the engine running, without being held. The model must
then smoothly accelerate to lift off. When the aircraft
reaches take off speed, it should gently lift off the ground
at the center line and climb at a gradual angle (10 to 15
deg). The airplane should hold a constant angle of climb
without any dips or wing rocking, or deviation in direction
until it reaches a height of 2 meters.
·
Enter the aerobatic box discribed as a flight realm
of 60 deg.'s either side of the center line.
·
Straight Flight Out. The model must be flown exactly
parallel to the flight line, perfectly straight and level,
for a distance of about 100 yds, centered on the pilot and
judges. There must be no changes in pitch, roll, yaw, or
altitude.
·
Stall Turn. Model performs a 1/4 loop beginning at
the end of the box, following the 2-point roll. The plane
then flys straight up, performs a stall turn through 180
deg, dives straight down followed with another 1/4 loop of
the same radii and enters straight and level flight in the
opposite direction and same altitude in which it entered.
·
Straight Flight Back. Immediately after the Half
Reverse Cuban Eight, the model shall fly back along the same
line as the Straight Flight Out. The same rules apply.
·
Half Reverse Cuban Eight. The model smoothly pulls up
to a 45 deg climb; hesitates, then does a half roll to
inverted, then hesitates the same as before, then executes a
5/8ths loop back to level flight in the exact opposite
direction. All radii must be equal. This maneuver must be
completed before the model exceeds the 60 deg maneuver
boundary.
·
Two Inside Loops. At the center, the model pulls up
and executes 2 consecutive inside loops, all of the same
size and superimposed one on the
·
Model exits box. turns around using any maneuver
desired and sets up to re-enter box on the same line as it
exited.
·
Model enters box
·
Two Point Roll Model performs a half (1/2) roll
inverted, hesitates about 1 second, then performs another
half (1/2) roll in the same direction to level, upright
flight. The inverted portion of the flight must be centered
on the pilot and judges.
·
Half Cuban Eight. At the end of the box, model pulls
up and executes a five-eights (5/8) inside loop, when at 45
deg on top and inverted, model hesitates, half rolls,
hesitates, then pulls a one-eight (1/8) loop back to level
flight .
·
Cobra without Rolls Model pulls to a 45 deg. climb,
performs a quarter outside loop (90deg) at the center line
and then does a 45 deg dive back to the same altitude as the
entry point then pulls to level flight.
·
Immelmann Turn. The maneuver starts near the end of
the maneuvering area, flying straight and level, the plane
pulls up into a 1/2 inside loop, then rolls 180 deg at top
of loop and returns straight and level in the exact opposite
direction as entered.
·
45 Degree Down Line (D) From level flight model
pushes and executes a one-eighth (1/8) loop to a 45 degree
dive, hesitates, then performs a one-eighth (1/8) inside
loop to recover in level flight. The center of this maneuver
is the midpoint of the 45 degree line.
·
Model exits box. turns around using any maneuver
desired and sets up to re-enter box on the same line as it
exited.
·
Model enters box
·
Vertical Upline (U) on center From level upright
flight model pulls and executes a one-quarter (1/4) inside
loop to a vertical flight path, hesitates, then performs a
one-quarter (1/4) outside loop to recover in upright flight
at a higher altitude. The vertical up-line must be in the
center.
·
Split "S". Model proceeds in level flight to other
end of the box where it performs a half roll followed
immediately by a half loop, and returns to level flight at a
lower altitude going in the opposite direction, straight and
level. This maneuver is considered a turnaround maneuver.
·
One Horizontal Roll. Model performs one horizontal
roll, centered on the pilot so that the inverted section is
in front of the pilot and judges, then finishes straight and
level.
·
Half Reverse Cuban Eight. The model smoothly pulls up
to a 45 deg climb; hesitates, then does a half roll to
inverted, then hesitates the same as before, then executes a
5/8ths loop back to level flight in the exact opposite
direction. All radii must be equal. This maneuver must be
completed before the model exceeds the 60 deg maneuver
boundary.
·
Double Immelmann w/o Rolls. Model pulls through
one-half loop to level , inverted flight, hesitates, then
pulls through a second one-half loop to level, upright
flight at the same altitude as entry. The horizontal,
inverted leg should be equal to the diameter of the half
loops.
·
Landing. Landing will start from 2 meters above the
ground. The model flares smoothly in a nose-high attitude
then smoothly touches down within 15 meters of a point in
front of the pilot. The airplane should hold a constant
angle of glide without any dips, yaw, wing rocking, or
deviation in direction until it touches down, with no
bounces. Landing is complete after a roll-out of 15 meters.
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