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Chapter-13 Performance Maneuvers-V20_Sport Pilot Handbook 8/30/2021 4:12 PM Page 30

13-30 Rod Machado’s How to Fly an Airplane Handbook

examiner says to stop or you’re unable Coordination at 45° of Turn
to hold the controls any longer because
your arms went numb.
When performing the lazy eight to
the left, you’ll often find that you still
need to apply a little right rudder pres-
sure as the airplane climbs toward the
45 degree reference point (Figure 45).
This should make sense since the air-
plane’s power-induced left turning
tendency increases as the airspeed de- At 45° of turn you might need a
creases. You might also find that you little right rudder and a little left
really don’t need that much left aileron to remain coordinated
aileron to sustain an increasing bank Fig. 45
angle given the airplane’s tendency to
As you approach 45° of turn in the left lazy eight loop, you’ll need a little
roll to the left under higher power right rudder to counter the airplane’s left turning tendency. A little left
conditions and increasing angle of aileron might also be necessary to maintain the increaseing bank angle.
attack.
As you approach 90 degrees of turn, Coordination at 90° of Turn
you’ll typically need to apply a little
left rudder and a generous amount of
right aileron deflection (Figure 46).
The right aileron deflection is neces-
sary to keep the bank from increasing
beyond 30 degrees at this point. A lit-
tle left rudder is typically necessary
here to keep the nose pointed in the
direction of turn, despite the air- At 90° of turn you might need
plane’s power induced left turning a little left rudder and a right
Fig. 46 aileron to remain coordinated
tendency.
The slice that typically occurs at the At 90° of turn in the left lazy eight loop, you’ll most likely need a little left
90 degree turn point is one of the most rudder to remain coordinated as you slice through the reference point
beautiful aspects of this maneuver. and a sufficient amount of right aileron to prevent over banking.
Given the slow airspeed and steeper The Slice At
bank, the higher rate of turn at the 90 90° of Turn
degree point results in your perceiving
the airplane’s longitudinal axis slicing
diagonally through the distant refer-
ence point (Figure 47).
The slice at
Just to be clear here, the actual 90° should be
amount of rudder and aileron you’ll a perfectly
need during any lazy eight depends on coordinated
maneuver
the airplane you’re flying. Airplanes
with bigger more powerful engines
produce a more noticeable left turning Fig. 47
tendency. Therefore, there can be a
distinct difference in control feel and The perceived slicing motion through the reference point at 90° of turn
results from the higher rate of turn that’s associated with the slowest air-
control usage between airplanes. speed and the steepest bank found at this point in the maneuver.