General. The Barrel Roll will help develop your confidence, coordination and "sense of
feel" while flying the aircraft through rapidly changing attitudes and airspeeds. Since attitude,
heading, etc. change so rapidly, this is an excellent maneuver for developing your ability to
CONFIGURATION: Transition to aerobatic cruise. CHECKLIST: Complete the
Aerobatic Checklist. CLEARING TURN: Commence a clearing turn and roll out
on or parallel to a section line. Pick a prominent reference point on the horizon 90º to
either side of the nose, in the direction you intend to perform the maneuver.
Recheck the wings level and clear the airspace above you. Just prior to entry, check
and report the entry altitude over the ICS. Commence the maneuver by smoothly
raising the nose while keeping the wings level. As the exhaust stacks pass the
horizon, roll and pull so that the nose travels around in an arcing path towards the
selected 90º checkpoint. After 45º of turn, the angle of bank should be 90º and the
nose will be at its highest point during the maneuver (approximately 55-60 degrees
above the horizon).
Continue rolling the aircraft at a constant rate until in a wings level, inverted attitude,
heading directly at the 90º reference point on the horizon. Your nose should be
slightly above the horizon and the airspeed between 90 and 100 KIAS. Fly the
aircraft through the inverted position and continue rolling at a constant rate,
completing the maneuver on the original heading and altitude at aerobatic cruise
airspeed. Maintain a positive "G" load throughout the maneuver. If performed
properly, 2.0 Gs should not be exceeded at any time during the maneuver.
The nose should appear to make an arcing path about the imaginary point on the
horizon 45º from your original heading. The last half of the arc will, therefore, be the
same distance below the horizon that the first half is above the horizon. Remember,
as the airspeed decreases towards the top of the maneuver, it will be necessary to
increase the deflection of the ailerons, rudder, and elevator to maintain a constant rate
of pitch and roll. Conversely, as the airspeed increases towards the bottom of the
maneuver it will be necessary to decrease the deflection of the ailerons, rudder, and
elevator to maintain a constant rate of pitch and roll. Notice that this roll is started as
a climbing turn, which then becomes a continuous roll at a constant rate.
Maintain orientation throughout the maneuver by concentrating on your reference
points. Maintain a constant rate of roll and nose movement. Inscribing a small arc
above the horizon in the first half of the maneuver and a larger arc below the horizon
in the last half will result in too great an airspeed at the completion of the maneuver
or unnecessarily high "G" forces to recover on airspeed. During the roll out to the
original heading, adjusting the backstick pressure will enable you to recover on
altitude and at aerobatic cruise airspeed.
AEROBATIC MANUEVERS 11-9