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Hang Gliding
- Articles - Basic
Parachute for Pilots of All Stages
By
Betty Pfeiffer
As spring approaches
now is the time to take a better look at your parachute. If you have
an older parachute, keep in mind that many were designed for the lighter
weights and slower speeds of the single surface gliders and may no longer
be adequate for todays more efficient wings. A qualified rigger
familiar with hang gliding reserve parachutes can help you determine
if your parachute is suitable for you.
In any event it
is time to attend a parachute repack and practice throwing your parachute.
If there is no parachute repack program in your area, you will want
to tie your parachute closed in the deployment bag, hang in your garage
or from a tree and practice throwing your parachute at least twice...once
with each hand. Do not forget to untie your parachute container before
you place it back into your harness to fly.
Parachute deployment
basics for all hand deployed units:
With most hand deployed
systems the parachute deploys in this sequence: the bridle reaches full
extension, the lines snake out of the line pocket, the canopy snakes
out of the parachute canopy compartment. The beauty of this system is
that the parachute canopy is protected by the deployment bag until it
passes the wreckage. Throwing the parachute in the direction you want
it to go is a fairly natural maneuver.
When you have determined
that it is time to use your emergency parachute act quickly, do not
waste time. If you are in a spin or tumble your situation can quickly
worsen. If you still have a control bar in hand you will have to decide
whether to let go or hold on with one hand during deployment.
When you practice
throwing try holding onto the control bar and try with no control bar.
If you are not holding onto the control bar, use both hands to throw
your parachute. You will need all the power you can muster. Practice
with both your right and your left hands. Practice with and without
gloves. Always carry an easy-to-reach hook knife in case you need to
cut yourself free from the parachute once you have landed to prevent
being dragged.
No Matter What...Memorize
these steps:
1. Look for
the deployment bag handle.
2. Reach and grasp
the handle securely. Some pilots prefer to hook their thumb into
the handle loop especially if they are wearing gloves.
3. Peel the handle
down and away from you. You should now be holding the deployment
bag containing your parachute.
4. Look for clear
air. Avoid any cables or wreckage that might tangle with your parachute.
5. Throw the
deployment bag towards the clear air. Throw the bag hard, as if
your life depended on it, because it very well could. Your bridle should
come to full extension followed by your lines and canopy.
6. Yank vigorously
on the bridle. This will help to spread the suspension lines and
open the air channel if your canopy has not yet inflated.
7. If necessary
pull your parachute back in with yanking movements and repeat
steps #5 & #6.
8. In an actual
emergency deployment, if your parachute is below you and you are falling
into your canopy do not pull it all the way in. Instead continue
to yank on the bridle until it inflates away from the wreckage.
9. Prepare for
impact: Unzip, go upright, pull in dangling instruments or
radios, and climb into the control frame if possible
Ballistically
Deployed Parachute Basics
A ballistically
deployed parachute exits the container in this sequence: The rocket
pulls the apex (top) of the canopy out followed by full line extension
then full bridle extension. Ballistic systems get the parachute to full
extension fast. When you have determined that you need to use your parachute
follow these steps:
Look for the
activating handle
Graspthe handle
securely
Determine the direction
the rocket is pointing and when it is towards clear air pull the
handle. A fast "snap of the handle usually works best. If you
have a BRS system you can expect about 12" of pull. A Second Chantz
A.I.R. system needs travel only 3" to fire.
Yank vigorously
on the parachute bridleand follow instructions #7 to #9 from the hand
deploy sequence.
Landing Suggestions
Once your parachute
has opened:
If you have a POD style
harness open the doors to let your feet out. If you have a cocoon, get
your feet out of the harness and go to a feet down position.
If possible climb
into the control bar and stand with your feet spread on the base
tube.
Try to stabilize
the glider. You may be able to steer your glider with control inputs
from your feet. If possible try to face the glider into the wind for
landing.
Once you are standing
in your control bar, keep your head up and arms in. If possible evaluate
the condition of your equipment, pull in any instruments that have
become dislodged and secure them for impact. At this time be sure your
hook knife is readily available.
Depending on your
particular situation, you should attempt to let the glider take most
of the impact of landing rather than your body. If you have good control
and your glider is still flying, you may consider dropping into your
harness for a good flair before impact.
If you are not able
to climb into the control bar try to get into a feet-to-earth
position. Prepare for a PLF (Parachute Landing Fall) by
keeping your eyes focused on the horizon, bringing your legs together
with knees slightly bent, and your arms in. Try to allow your legs to
take the landing impact as you roll from the side of your legs to the
side of your hip, to the side of your shoulder. If you are drifting
while you are under canopy, prepare to roll in the same direction you
are drifting.
Immediately upon
landing, unhook from your glider and parachute to prevent the possibility
of being dragged.
How to stop deployment
problems before they begin
Repack often.
If there is any
question about whether your parachute is properly placed in the deployment
bag, hook the handle on a solid object and pull on the bridle. The bridle,
lines then canopy should snake out of the deployment bag in a smooth
orderly sequence. (DO NOT ATTEMPT TO REPACK YOUR OWN PARACHUTE WITHOUT
APPROPRIATE GUIDANCE OR TRAINING.)
Note:When
you have your ballistically deployed parachute repacked ask the packer
to disconnect the rocket and pull the lanyard to simulate the rocket
pulling the parachute out of the container. It should pull out smoothly.
This process should be repeated after repacking if there is any question
about how the parachute is packed.
Inspect Bridle
Check the bridle
for signs of damage that may have been caused by dirt, abrasion, or
friction. Pay special attention to the carabiner loop since damage caused
by friction from the harness is common. The point of bridle entry into
the parachute container (about 5 from the carabiner loop) may
show signs of fraying due to Velcro damage. One way to avoid such damage
is to mask off the Velcro hook at the point of entry. Most current parachute
bridles come with a protective sleeve built onto the first 5 of
bridle. Hang glider emergency parachute bridles should be 25 long
and made out of Type XVIII webbing or an equivalent. Some manufacturers
use Kevlar bridles. This should be sewn with Kevlar thread.
Inspect Deployment
Bag Handle
Be sure it is securely
mounted to the deployment bag, has reinforcement at the attachment points,
and has curved pins properly attached to the handle.
Inspect Safety
Pins
They should be curved
with smooth ends. They may be made from solid wire or die cut. If they
have any burrs file them smooth. If they are made from clevis pins or
cable, replace with standard curved pins. If they are rusty, clean them
or replace.
Check Line Stowage
All lines should
be enclosed in the deployment bag or in a line stowage compartment.
Deployment bags with line rubber bands on the outside are subject to
line dump, entanglement and Velcro damage.
Inspect Safety
Pin holders
Be sure the bungee
(or rubber safety pin holder) is tight enough to hold the safety pin
without slipping. The bungee should be secured around the safety pin
shaft only. If the bungee slips above the shaft to the safety
pin attachment on the handle it will not deploy. If your bungee is too
loose just slide the knot towards the loop of the bungee and thus tighten
it up.
InspectRubber bands
Be sure your rubber
bands are strong. Replace rubber bands often. Do not double stow (wrap
then around the lines more than once). Use only the appropriate size
rubber bands as recommended by the deployment bag manufacturer.
Check Grommets
Brass grommets have
a chemical reaction with rubber bands that quickly deteriorates the
rubber. If your deployment bag has brass grommets, consider updating
your deployment bag or at the very least changing to nickel grommets.
Preflight your
parachute:
Check your safety pins
Be sure your handle
loop is accessible.
Look at your bridle
routing making sure "extra bridle" has not slipped out of
your parachute container.
Be sure the bridle
is on the carabiner opposite the gate.
Double check your
parachute container Velcro. Be sure it is closed appropriately.
If you have a Ballistically
Deployed System
Check to make sure
your safety is off and your handle is available
On landing do not
forget to secure your safety.
After you place
your parachute into your harness:
Be sure the handle
releases the safety pins before it pulls on the deployment bag. Be sure
the harness has the appropriate size grommet to easily allow bungee
or rubber restraining loop from binding and restricting the opening
of the parachute container.
If your parachute
is too small for your parachute container, the handle may not want to
release properly. You can add foam to the bottom of your parachute container
to help the parachute ride higher in your harness container.
Do the "knee
test" to assure that your parachute is not going to pop out of
the harness in flight.
Knee Test:
1. Place your
knees on the back of the parachute container (inside the harness
where your body would normally lie)
2. Hold the
harness where the sides of your body would normally fit.
3. Pull the
sides of the harness towards you while you push against the parachute
with your knees in a manner that simulates your body weight.
4. If you hear
Velcro opening sounds, reattach the Velcro and sit on your parachute
container. Try to squeeze the air out of your parachute by rocking
back and forth.
Check your bridle
routing to make sure it will not get hung up .
Make sure the bridle
is attached to the carabiner on the opposite side of the gate
Practice, Practice,
PRACTICE!
Of all the pilots
I know who have come down under canopy, not one has ever thought it
would happen to him (her). The consensus is that practicing deployments
on the ground, attending parachute clinics, looking and reaching for
the deployment handle each flight, imagining and repeating your deployment
sequence at home and talking to pilots who have come down under canopy
all help prepare you for a safer deployment.
Remember: even under
the best conditions your parachute may not work so above all else...FLY
SAFELY.
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