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Carolina BalloonFest FAQ's
Hot air ballooning
is the worlds oldest form of aviation and air travel. In 1783,
the Montgolfier brothers of Annonay, France, made the first successful
balloon flight in a balloon filled with smoke from a straw-fed fire.
Today, 223 years later, ballooning has become a recreational and
competitive sport.
Why do flights take place only
in the morning and the late afternoon?
Balloons need stable winds to operate
effectively and the hours just following sunrise and approximately
2 hours before sunset are the best for finding these winds. Since
balloons move with the air, the weather is very important in deciding
to whether or not to fly. The pilot chooses a launch site to use
the wind currents to fly towards a suitable landing site.
How is the balloon inflated?
When the time comes to put the balloon
up, the envelope is removed from the bag and laid out in
a long line. The burners are attached to the uprights, and the basket
is attached to the cables on
the bottom of the envelope. An engine driven fan is used to inflate
the envelope with cold air.
When partially inflated, the air is heated by a burner and the envelope
rises above the basket.
With further heating, there is sufficient 'lift' for the balloon
to fly.
What kind of fuel is used for
the burners?
To heat the air, the burners are
fueled by propane gas, much the same as you probably use in your
backyard barbecue grill. The burners do not run continuously; they
are only used intermittently to heat the air to maintain the required
lift.
How tall are balloons?
Depending on the weight capacity,
balloons may be as tall as 100 feet but the average balloon is 70
feet.
How large are hot air balloons?
Most balloons are larger than your
house. They hold from 19,000 to 211,000 cubic feet of air and loom
from 50 to 90 feet.
How far do balloons fly?
Again...it depends on the wind speed.
Hot Air Balloons travel with the wind and an hour flight can carry
it up to 15 miles, sometimes more, sometimes less. The balloon also
flies at different altitudes. Although the balloon is at the mercy
of the wind when it comes to direction, the vertical control of
a balloon can be very precise. It is not unusual for our pilots
to be able to brush the bottom of the basket across the tops of
brush, or inches from the ground A leaf picked from a treetop is
a very worthwhile souvenir of the flight!
How high do balloons fly?
Most balloonists enjoy low level
flight. The typical balloon flight would be anywhere from tree level
to about 3,000 feet above the ground.
How does the chase crew know
where they are?
Radios are used to stay in contact
with the chase crew as well as with Air Traffic Control and other
aircraft flying in the vicinity.
Who can fly a balloon?
The Federal Aviation Administration
issues a Balloon Pilot Certificate to candidates who pass an FAA
written examination, obtain a prescribed number of hours in a balloon,
make a solo flight to altitude, pass a flight test, and submit a
medical statement.
How do you steer a balloon?
The balloon goes wherever the wind
takes it. However, pilots can seek higher or lower altitudes to
find wind currents of various directions. We refer to it as the
truest form of sailing.
What are the best conditions
for flight in a balloon?
A balloon flies better in cooler
weather since the hot air gets a better "lift." Balloonists
usually fly just after dawn or before dusk, because there is less
wind at these times.
Is it cold in a balloon?
At high altitude, it is colder than
at ground level, generally 3.5 degrees colder for each 1,000 feet
of altitude.
What kind of cloth is the balloon
made of?
The colorful envelope is usually
made of nylon or polyester, the same type of cloth that parachutes
are made of. It is very tightly woven and is coated with a material
that makes it very air tight. The nylon is only used to keep the
hot air in the balloon. The basket load is transferred by steel
or Kevlar cables to a series of vertical load tapes which carry
the load. Balloons range in size from about 54,000 cubic feet for
a one- or two-person balloon to over 250,000 cubic feet for a balloon
capable of carrying a pilot plus eight or ten passengers.
Why is the basket made of wicker?
The wicker basket has proven to
be very strong for its weight and is flexible. The wicker is sometimes
woven around a steel or aluminum frame, which helps to support the
upright posts upon which the burner is mounted. The top rim of the
basket and the uprights are usually padded and covered in suede
or leather.
Balloon Races
What is competition flying?
As in most sports there is a way
that you can compete against other balloons in a test of skill.
Ballooning is a little different in that it does not rely on speed
like most other aircraft. Balloons travel at the same speed as the
wind, therefore all balloons travel at approximately the same speed.
If there was to be a competition based on airspeed alone, it would
be a draw between all competitors.
It is still, however, not that
simple. The target is usually identified by a large cross with 30
feet arms. Balloons are approximately 50 feet tall, 35 feet in diameter,
and there can be up to 100 in a competition. Now basic math says
it is impossible to fit that many balloons at a single target. Because
of this, weighted streamers (markers) are used as a substitute for
landing. These markers are thrown at the target from any height
and the closest marker to the target wins that task. One flight
can have up to 4 tasks, which means the pilots and their teams are
working overtime to complete the flight with a good point score.
So how do balloons compete?
Balloon pilots compete against each
other based on accuracy. The object is to get the closest to a target
set by a third party, in this case, the competition director. The
closest to the target gets the most points and over several flights
this leads to an overall winner.
If you can't steer a balloon, how accurate
can you be?
Balloons are amazingly agile aircraft for their size. Although you
can't steer them in the conventional manner, you can "steer"
them by using different wind directions at different altitudes.
Wind direction in not exactly the same as you go up, sometimes there
can be minor deviations in direction, at other times there is considerable
"steerage" available for the pilot to use. Pilots ascertain
this direction through a device called a "windreader"
which uses a theodolite hooked to a computer to track the climb
rate and direction change of a small helium filled balloon.
By using the different directions, top
level pilots are amazingly accurate and it is not uncommon
to have 20-30 pilots closer than 3 feet from the center of the target
from distances as far as 5
miles away.
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