Flight Training - September 2014 - 48

TECHNIQUE

SNAP ROLLS

A spin on a different plane
ยป By Ian J. Twombly

ILLUSTRATION BY CHARLES FLOYD

FOR AN AIRPLANE to spin, both wings must be stalled-one more deeply stalled than
the other-and autorotation must be started with rudder. This basic definition says
nothing about the direction the wings are pointed, or the speed with which a spin
is entered. That's because, just like a normal stall, a spin can develop at any attitude
and any airspeed.
Snap rolls are not only fun to watch, but they also are a perfect example of this
concept. That's because a snap roll is nothing more than a power-on spin. Although
typically flown on a horizontal plane, they can be entered straight up, straight
down, and anything in between.
Here's the general technique for a standard aerobatic aircraft. Attempt only with
a knowledgeable flight instructor and properly certificated aircraft.

1. Fly straight and
level at a normal
airspeed, that is below
maneuvering speed.

48 /

FLIGHTTRAINING.AOPA.ORG

2. To begin the snap
(or flick, to the Brits),
the airplane must be
stalled. To do so, pull
back hard on the stick
or yoke.

3. Almost immediately add
a strong yawing motion
with rudder in the desired
direction of the turn. This
begins the autorotation
portion of the snap. Aileron
isn't necessary, but it can
help the rotation if applied
in the same direction as
the turn.


http://FLIGHTTRAINING.AOPA.ORG

Flight Training - September 2014

Table of Contents for the Digital Edition of Flight Training - September 2014

Contents
Flight Training - September 2014 - Cover1
Flight Training - September 2014 - Cover2
Flight Training - September 2014 - 1
Flight Training - September 2014 - Contents
Flight Training - September 2014 - 3
Flight Training - September 2014 - 4
Flight Training - September 2014 - 5
Flight Training - September 2014 - 6
Flight Training - September 2014 - 7
Flight Training - September 2014 - 8
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Flight Training - September 2014 - Cover3
Flight Training - September 2014 - Cover4
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