Egypt and the Nile
Balloon Flight
A hot-
The basis of how the balloon works is that warmer air rises in cooler air. This is
because hot air is lighter than cool air. The actual balloon (called an envelope)
has to be so large because it takes such a large amount of heated air to lift it
off the ground. To help keep the balloon in the air and rising, hot air needs to
be propelled upwards into the envelope using a burner. The burner uses propane gas
to heat up the air in the envelope to move the balloon off the ground and into the
air.
The burner is fired at regular intervals to ensure that the balloon continues to
be stable. To move the balloon upwards the pilot opens up the propane valve which
lets the propane flow to the burner which in turn fires the flame up into the envelope.
To move the balloon downwards, a 'Parachute Valve' at the very top of the balloon
is used to bring the balloon down towards the ground. It is essentially a circle
of fabric cut out of the top of the envelope which is controlled by a long chord
which, when pulled, opens the valve, allowing hot air to escape, decreasing the inner
air temperature. This cooling of air causes the balloon to slow its ascent. A gentle
decent can also be initiated by burning less often as the balloon gradually cools
due to heat loss from the warm surface of the balloon. If a pilot wants to move in
a particular direction, they simply ascend and descend to the appropriate level and
ride with the wind. This is however limited to the variation in wind direction on
the day which may not be consistent.
One striking thing that can be clearly seen from the balloon, is how the terrain
changes when the land is no longer irrigated. The line between fields with crops,
and the desert, is very distinct. This helps to demonstrate the importance of the
Nile throughout Egypt's history, and how this great river has held the key to life
and death in Egypt throughout the ages.
As stated earlier, what you see during your balloon flight can differ, but the opportunity is there to see things that are not normally seen when you take the standard scheduled trips, such as some of the less visited temples, or a different view of some of the more popular attractions, such as the Colossi of Memnon. Whatever you see, you can be assured it will be something that will remain in your memory for many years to come.