
36
-
Component F
for
is responsible for the forward
motion.
-
Component F
down
, pulls the submarine
downward.
The downward pulling force-F
down
opposes the
upward force-F
up
.
If F
down
is bigger than F
up
,
then
the mini submarine will go deeper. If F
down
is
smaller than F
up,
then the E-XP
-1
will move towards
the surface. If F
down
equals F
up,
then it will stay
constantly at its submerged depth.
The dive characteristics of the E-XP
-1
are
determined by the size of the upward force-F
up
:
-
If the upward force is stronger then F
down
must be likewise large, otherwise the mini
submarine will not submerge. This requires
a large F
for
, i.e. the sub must move relatively
fast in order to submerge.
Advantage: The E-XP
-1
is very agile and can
be driven fast.
Disadvantage: Due to higher motor rpm,
the energy consumption will be higher and
therefore the operation time will be
reduced.
-
Inserting one or more of the provided metal
washers into the E-XP
-1
will decrease the
upward force-F
up
. Adding more weight will
result in faster downward action at a relatively
slow speed.
Advantage:
The energy consumption will