Featured maneuver: Humpty Bump
How to do a Humpty Bump:
- From horizontal flight, the airplane does 1/4 loop in to a vertical up line. It draws a perceptible up line.
- On top, the plane does one half loop to a downline with a 1/2 roll in the middle the line.
- The maneuver ends with a second 1/4 loop at the end of the down line to exit upright.
According to the AMA Competition regulations, the length of the vertical lines does not have to match. The radios of the 1/2 loop on top may be different than the 1/4 loops of the bottom. The following situations cause deductions:
- The Entry and the exit radius of the quarter loops of the bottom do not match. Number of points deducted is at the discretion of the judge.
- The partial loops must have a constant radius from the time they depart the vertical line. Any change in radius cause a penalty of 1 point.
- Up & down vertical lines do not appear to the judge’s eye as a straight line perpendicular to the horizon. Each 5 degrees of deviation from vertical line will result in a 0.5 point deduction. This includes the case where the vertical lines are not properly wind corrected.
- Any added elements such as rolls, snaps etc are not positioned so that the lines before and after the element are not equal. Perceptible difference: 1 point deduction, one line is twice as long as the other: 2 points deduction and the two lines are missing: 2 points deduction.