straight and level
The first exercise for students is to learn
to fly straight and level. Having of course read the aerodynamics section
of ground school, you will already be familiar with the forces acting upon
the aircraft. What seems like a fairly easy thing to do can actually take
a bit of practice. Firstly, the average training aircraft has a low wing
loading which means that it will react to turbulence to a far greater
extend than heavier and more sophisticated planes. When the aircraft
bounce the student at first has a tendency to over-react on the controls.
This can result in PIO (pilot induced oscillation).
Straight and level also means that the pilot must control three
dimensions. While concentrating on maintaining a compass course, the
student loses or gains height, or vice versa. Once cruise speed has been
reached, the aircraft must be trimmed to obtain a neutral feel of the
elevator control. There is a time lag before the aircraft settle down
which again often results on over control by the student. The wings must
be kept level otherwise the aircraft will begin to turn.
At
periodic intervals, the direction indicator will need to be re-adjusted
with the compass. Carb heat should be applied for short periods, say every
ten minutes in humidity levels which may encourage icing.
You
must also develop your scanning technique to look about for other aircraft
and check your flight and engine instruments. In looking out of the
window, you must keep scanning with your eyes, as otherwise you may be
missing a possible collision with another
aircraft/balloon/microlight/glider.
This is
because we have a blind spot (fovea).
unless you are scanning and moving your head, this could be very very bad
The area where the optic
nerve connects to the retina in the back of each eye is known as the optic
disk. There is a total absence of cones and rods in this area, and,
consequently, each eye is completely blind in this spot. Under normal
binocular vision conditions this is not a problem, because an object
cannot be in the blind spot of both eyes at the same time. On the other
hand, where the field of vision of one eye is obstructed by an object
(windshield post), a visual target (another aircraft) could fall in the
blind spot of the other eye and remain undetected.
You will not be the only
person in the air, and traffic near airfields can be quite busy. It is
important to learn how to interpret the relative movements of other
aircraft in order to determine which target could represent a potential
collision. If the target moves across your windshield you are not on
collision course. If the target remains static, avoidance action must be
taken.
right click on image and select 'play' to see movie
relative movement of target - no collision
danger
right click on image and select 'play' to see movie
no relative movement = bad hair day
Right of way
If two aircraft are approaching each other they shall pass to the right
Aircraft to starboard is of right of way aircraft
Overtake in the air to the right.
Overtaking aircraft must not interfere with the overtaken aircraft
There are many occasions
where it is necessary to maintain straight and level flight while reducing
speed (entering into the pattern (circuit) for example). The throttle
setting is reduced and the aircraft begins to lose airspeed. To prevent
descent, the stick is gradually pulled back which then presents the
underside of the aircraft to the airflow, thus increasing drag. The result
is that the aircraft slows down further. An increase in throttle will then
be required to maintain altitude.
The aircraft should of
course be re-trimmed in the new configuration. Slow flying results in a
nose up attitude and forward vision is obscured. Once airspeed has reduced
to VFE (the speed at which the flaps can safely be deployed) one stage of
flap will bring the nose of the aircraft to a more comfortable attitude.
click here to see movie