Daily Kennebec journal. [microfilm reel] (Augusta, Me.) 1870-1975, 1911-03-25

SIyS:- apparatus has been patent
ed Under the name of 'AppaTcccio
IdroVoeMte' apparatus for hydro
pianirg>. In fact. it constitutes true
hydraulic eight, the apparatus heing
sustained by the water in the same
manner that birds and aeruplanes are
sustained in the air; that is to say
by tn" dynamic reaction Of the water
on the SuperiiCies or planes attached
to III, hull Of the hydroNlane. most
OF these planes remaining completely
out of the water while the machine is
III action. Tho idea of using the dSna-
mical reaction Of the water is not
new. but up TO the present has nef
Leon applied with success. except
what has been attempted with gliding
boats: in these boats. however. the hull
does not leave the water. but skins
on tile surface. which binders the at
tainmcnt of really high speeds.
The most important characteristic
Of the hydropl@Io is that the resist
nnce of the water is not dependent
on the speed. but remains constant.
and is equal to hale the total weight
of the apparatus; the total resistance
is increased only by portion of re-
sistance due To the air a portion nat
urally proportional to the square of
the speed. In consequo similar
hYdr0plancS in the future should be
able to attain speeds of 50 to 100 miles
an hour. and change themselves into
lying machines by the addition O. the
necessary planes for aerial susren-
sion
- for civ ,.,.,,, loo,
Forlanini can now consider that he has
arrived at fully satisfactory and def
mite results. The first hydroplanr he
tried during the years 1903. 1906 and
1907. Immediately demonstrated ths
excellence Of the new system, but its
performances were always naudi-
capped by the irregular working OF Il
bad ,e-horse- power motor, With Whicl,
il was fitted. Another hydroplane.
tried during IL" Years 1908 and 1909.
was fitted with steam motor that
worked more regularly. Although the
effective power was only - horse
power. and the weight OF the boat over
ton. this machine attained speed
Of over 20 kilometers an hour.
.'fh" llyGroI lane that j. being test
ed at present weighs TWO tons when
there are two persons aboard--it is
possible to carry four other persons
and is fitted with d lno-horse- power
gasoline motor 1t has attained Il
speed of 10 miles per hour. and this
speed will be increased by the intro
duction OF few notifications that
are being gradually Indicated during
the trials il is now undergoing. This
hydroplane has a hull 3os feet long:
at the bows and stern arc two strong
steel tubes about 11l2 feet long. fixed
transversely. At four free ends of
these tubes. namely. on the starboard
and port sides of the boat, is fixed a
sort of framework which contains q
series Of planes. one above the other.
When the lIydroplane is not work
ing, but is floating on the water like
any other ordinary boat. the planes
are immersed in the water and have
a slight horizontal inclination. I'M
mediatelv The hydroplane, owing to the
working of the screw, begins to move
forward, the water exercises verti-
cal force on the planes in precisely the
same manner as the air on the planes
of an aeroplane; the hull, therefore,
tends t. rise and so diminishes it's
immersion and naturally the resist
ance against its motion. In manner
that the speed is able to increase. IL
this wdy there comes moment when
the hull is completely out of the wa
ter. At this point the speed rapidly
increases, and little by little the vari-
Gus planes or superficies rise out OF the
water one after the other. When the
maximum speed is reached. only the
bottom planes remain on the water,
while the bottom Of the null is 65 CEN
timeters higher.
The propeller by which this strange
craft is driven is carried on a hollow
fin which may be seen amidships. the
short propeller-shaft being revolved by
bevel gears attached to a vertical in
termediate shaft driven direct off tie
motor. The hydroplane Is at its best
in smooth water, but it must not be
inferred that it can be used only under
these conditions, as matter OF fact
it has been tested when quite high
wind has been blowing, accompanied
by the type of short waves one gets
in sheltered waters. and with perfect
success. 1t is also stated to steer very
we'll, and to be able to turn in much
smaller circle than one would imagine
to be the case. The short outrigger or
boWsprit is carried to assist the
hclmsman in his task, as it serves as
u pointer. '-Springficl Republican.