The diagram illustrates the working of a hot air balloon.
Overall, it is clear that the envelope is the largest part of the total area. In addition, the diagram indicates that propane is the fuel that is used to make the hot air.
At the base of the hot air balloon, a propane cylinder is located in the basket. The propane then mixes with air in the burner, producing a flame to heat the air. Next, the hot air rises inside the envelope, causing the balloon to rise from the ground because the hot air is lighter than the cool air in the surrounding atmosphere. Ropes are shown securing the basket section to the skirt of the envelope.
Alternatively, from the skirt at the base of the envelope, gores and panels also form part of the envelope section. Moreover, a parachute valve at the top of the envelope is a self-sealing flap. This allows the pilot of the balloon to control the rate at which the hot air can escape.
The diagram illustrates the working of a hot
air
balloon.
Overall
, it is
clear
that the
envelope
is the largest part of the total area.
In addition
, the diagram indicates that propane is the fuel
that is
used
to
make
the hot air.
At the base of the hot
air
balloon, a propane cylinder
is located
in the basket. The propane then mixes with
air
in the burner, producing a flame to heat the
air
.
Next
, the hot
air
rises inside the
envelope
, causing the balloon to rise from the ground
because
the hot
air
is lighter than the cool
air
in the surrounding atmosphere. Ropes
are shown
securing the basket section to the skirt of the envelope.
Alternatively
, from the skirt at the base of the
envelope
, gores and panels
also
form part of the
envelope
section.
Moreover
, a parachute valve at the top of the
envelope
is a self-sealing flap. This
allows
the pilot of the balloon to control the rate at which the hot
air
can escape.