The reading and the lecture are both about airships. The author’s opinion is that airships will be become popular again because of their advantages. The lecturer does not think that due to several disadvantages.
Firstly, the author states that airships use less fuel due that their engines used only for horizontal movement. Nevertheless, the lecturer disagrees with this. He explains that airships use two kinds of gases, hydrogen and helium. The first one catches easily fire and the second one is difficult to obtain and expensive. In that case the better economical aspect is not right.
According to the reading, airships can carry heavy loads in comparison to helicopters. The lecturer challenges this argument. He says that you can compare an airship with a balloon. They are both large and light. Heavy winds are a big problem for an airship. So, it is really difficult to be steady and stable. For this reason, he denies the statement of the author.
Last but not least the author posits that airships could even be used to replace satellites. In contrast, the lecture’s stance is that airships can just fly to 14 kilometers. In addition, it winds strongly at high altitudes. This uses a lot of fuel because the airships have to resist to the winds. In other words, they cannot offer a continuous service like satellites.
The reading and the lecture are both about
airships
. The author’s opinion is that
airships
will
be become
popular again
because
of their advantages.
The
lecturer does not
think
that due to several disadvantages.
Firstly
, the author states that
airships
use
less fuel due that their engines
used
only
for horizontal movement.
Nevertheless
, the lecturer disagrees with this. He
explains
that
airships
use
two kinds of gases, hydrogen and helium. The
first
one catches
easily
fire and the second one is difficult to obtain and expensive.
In that case
the better economical aspect is not right.
According to the reading,
airships
can carry heavy loads
in comparison
to helicopters. The lecturer challenges this argument. He says that you can compare an
airship
with a balloon. They are both large and light. Heavy winds are a
big
problem for an
airship
.
So
, it is
really
difficult to be steady and stable.
For this reason
, he denies the statement of the author.
Last
but
not least the author posits that
airships
could even be
used
to replace satellites.
In contrast
, the lecture’s stance is that
airships
can
just
fly
to 14 kilometers.
In addition
, it winds
strongly
at high altitudes. This
uses
a lot of
fuel
because
the
airships
have to
resist to the winds.
In other words
, they cannot offer a continuous service like satellites.