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Maneuvers flown during Sportsman pattern contest

The Precision Aerobatics flight maneuvers below are for Sportsman class only. For current and complete information on all Pattern maneuvers and contest rules visit National Society of  Radio Controlled Aerobatics.

 

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

 

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.

Credits to the NSRCA

 

 


 

 

 

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