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make a sailplane look like it is falling out of the air. Because
of this, it is important that you do not let the sailplane get too
far downwind.
When encountering sink, immediately turn and fly 90
degrees to the direction of the wind (towards you if
possible). Apply a little "down elevator" and pick up some
speed to get out of the sink as fast as possible. Every
second you stay in the sink is precious altitude lost.
Slope Soaring
Slope soaring is a type of flying that is very popular in hilly
regions and along the coasts. This type of soaring is
possible when the wind is blowing directly up a hill or cliff.
As the wind hits the slope it is forced up, producing lift which
can be utilized by real sailplanes, hang gliders, birds and
even model sailplanes. To be able to slope soar, you need a
slope with a smooth piece of land (or water) out in front of it
and a breeze blowing pretty close to straight up the slope.
The higher and steeper the hill or cliff the better. Also the
larger and smoother the land out in front the better. The air
flowing along hits the hill, is forced up and can generate a
very large area of lift. Behind the hill is a large area of
C
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turbulent air that can be very dangerous to try to fly in. The
faster the wind is blowing, the stronger the lift and
turbulence will be. To fly off a slope, stand near the edge and
throw the sailplane (nose down) into the wind. As the
sailplane flies out into the "band" of lift it will begin to gain
altitude. Turn and fly parallel to the slope and make all of
your turns into the wind (especially when you are close to
the slope). You will be surprised at the altitude you can gain
just from slope lift. Thermals will often be "popped loose" by
these slopes. If you catch a thermal and follow it downwind,
be very careful to stay high enough to make it back to the
slope without flying through the turbulent air behind the
slope. If you don't have enough altitude you may want to
land a good distance behind the slope if possible to avoid
this turbulent air.
Slope Landings
Landings can be very tricky on some slopes. On gentle slopes
you can often fly very close to the top of the slope and "slide"
into the top of the slope without encountering any turbulent air.
On steeper slopes you may have to be a little more aggressive
to get the plane out of the lift. In any case it is a good idea to
plan your landing before launching your plane.
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