Crash!
How to deal with tight landings in grotty places
The perfect landing goes
something like this - a wide, grassy field with a gentle breeze
tugging the windsock towards you, you flare at the perfect
height, and land on the spot, smiling at the cute BBC reporter.
The advanced pilots, oh revered SkyGods, make it look so easy,
always gently touching down, exactly where they want to, not a
blade of grass upset. But what happens when it all goes horribly
wrong, and you are in the pilot's seat? When the field isn't
there, you're being hammered by turbulence behind the trees, and
your glider has just decided to quit flying?
1. Checking out the lay of the land
Its a pretty basic idea, I'll admit, but often it is neglected in
the excitement of finally finding a flyable hill - visit your
landing field before flying. By placing a windsock in the field
you can reduce the elements which can go wrong - at least you
will know the wind direction. On warm, thermic days the wind is
especially variable. I have ploughed a good section of field with
my nose when a dustdevil switched the wind 180degrees on final
approach. A windsock would have spared the field injury
2. Always have a little bit on the side
If the Sink Monster (massive collumn of descending air) decides
to send you to the earth in a hurry, do you have a 'plan B'? No
matter how desperate, an emergency landing area (within very easy
glide) tucked into your flight plan is a must. Evaluate your
approach to both fields (primary and emergency) while you are
flying, so when the brown stuff hits the whirly thing you've got
one less thing to think about
3. Small field, big ears
To land in the little grass field in the middle of the forest of
tall pine trees, a variation of the normal landing setup may be
needed. The challenge is that your glide angle is too shallow -
even approaching the field from the downwind edge with your feet
clipping the tree-tops, you are going to overshoot the field and
fly into the forest on the far side.
Tucking your wingtips in (big-ears) will make your glide angle
steeper. Tuck them before your final approach, maybe one hundred
feet above the trees. Use weight shift to steer the glider into
your normal landing pattern and approach, S-ing off your height
on the downwind side of the field, and coming in on a final
glide. You may want to do a final S-turn below the height of the
trees if they are very high, to lose as much height as possible.
4. Shear flying terror
Because the field is surrounded by trees, there will be a shear
layer (interface between two wind-systems) which your glider will
pass through. Turbulence may try to collapse your wing, although
with big-ears in, you are unlikely to experience wingtucks due to
the high internal cell-pressure. What you do have to be careful
of is a stall, because of the high angle of attack. Be ready to
tramp on your speedbar if you feel the stall pulling the wing
back and the lift breaking away. It is important not to pull the
brakes too much as you pass through the shear into the wind
shadow below. The glider has to increase its airspeed to maintain
aerodynamic function, and even '1/2 brakes' will slow the wing to
stall point. Allow the glider to dive if you have enough height
to do so. Once the glider has levelled out, you will find you
glide a long way because you are sheltered from the wind. This
often means gliding off the field and into the trees, so keep the
big-ears on and only flare them out on the final landing flare,
one metre above the ground. It is better to have a hard landing
(softened with a Parachute Landing Fall), than to overshoot the
field and fly into the trunk of the trees. Besides, you'll get
the nickname 'Woody Woodpecker'. Unbearable.
5. Italian Butterfly
I call it the Italian butterfly because this is where I first
really needed this technique. Flying around Lake Como, you're
often crossing large areas of houses with limited landing areas.
We had just sunk out on a task on a tandem glider, and were
forced to fly down a little street, turn left at the end, and put
down in a small, small field. All looked good until the last
second, when I spotted telephone lines circling the field. There
was hardly any wind, and even with big ears tucked we were going
to dangle from the 'phone line. So I 'butterfly-ed' the glider
in. Pull the brakes to 3/4 on both sides, then release quickly,
and just as quickly re-apply the brakes to 3/4 continuing in a
rhythmical, flapping motion. The 'flaps' are about one second
apart. The benefits of the Butterfly technique is that you can
cause an almost vertical descent. The danger is that if you hold
the deep brake for too long, you can stall the wing. You are
close to the ground. So here's a tip you can use for every crash
landing - assume the Parachute Landing Fall position before you
even get close to the ground. Legs together and pointing down,
knees slightly bent, legs turned 45degrees off the direction of
motion. Landing gear is down - one less thing to worry about.
6. Timber!
When you realise that you are going to land in a tree do not
panic. Remember to close your legs! Aim for the densest part of
the tree. Flare (pull brakes) about 2 metres before the tree and
simply stand into it. Be careful not to flare too early, as you
will fall through the weak outer branches - you want to get to
the centre part of the tree. Your chances of injury will then be
greatly reduced. Secure yourself to the tree as soon as possible,
remembering to get the glider under control, as it can re-inflate
in the wind and pull you from the branches. If you're flying
around lots of trees, essential equipment is a long, thin piece
of cord (to haul up a rescue rope) and a wire-saw to cut your
glider out of obstinate branches.
7. Wet 'n wild
Firstly - stay away from water. It is safer to land on rocks
rather than in shallow surf. However, if a water landing is
inevitable, undo your legstraps (if you have the time). Land as
normal with a big flare to ensure the glider and all its lines do
not envelope you. Once the legstraps of your harness are undone,
you can slip out of the bottom of your harness and swim clear of
the lines and glider. If there is a high risk of water landings
at the site you choose to fly, always carry a hook-knife on your
harness so that you can cut yourself out of a tangle in the
water.
8. Nasty surprises
The danger with weird obstacles is often that pilots change their
landing technique, and land with a tight turn near the ground, or
with a huge pendulum as they brake to avoid something which looks
unfriendly. If you have to land in a bad area like a junkyard,
treat it just as you would a normal landing. Pick a clear spot,
or the object which you are going to hit, set up with a normal
approach, come in cleanly and fast on your final glide, flare
properly at the normal height. Even in zero wind conditions, a
proper landing flare will bring your craft almost to a stop. It
is easier to land on the obstacles with a slow, straight momentum
than with a body that is swinging to avoid every object along the
way.
9. Target fixation
The recent tragic tale of a competent pilot in the USA who
crashed into a 5foot wide water channel and drowned says it all.
Unless you consciously choose a safer landing spot, you will hit
the dangerous obstacle, because you are watching it. Once you
identify a dangerous obstacle, identify a safe place, and watch
the safe place. You've seen the obstacle, its not going anywhere.
The only exception is when the dangerous obstacle is a Spanish
fighting bull. If that is the case - ask for a refund on this
issue of Sports in the Sky, because Crash! hasn't helped one jot.