Evening journal., 1920-08-14
N. Y. TO FRISCO
NDAY BY AIR.
300-Mile Air Currents Ex-.
pected to Mean Super
speed Flights
DISCOVERED
BY SCHROEDER

In the past fifty years winds have
lost their importance in the ewes ~
man. Steam now transports him on
his ocean voyage. But. by a strange
chance, winds in the next fifty years.
will become once more a potent far
tor IN mans movements. in the. opin-.
ION OF Charles F. Redden, an aeronau--
teal export, OF Keyport. n. ]
AZ uhe present hme surface winds
nlnder or help the aviator Slightly
acordingly as he flies with them or
against them" Mr.. Reden said re-
Gently, These aerial currents are or
little Importance. however. for their
velocity is never more than a fraction
OF lhe speed or the plane. Surface
iation. 90
Nevertheless, as flying develops in
the next half century winds will ha
OF as much consequence as in the dav
OF clipper ships. The winds l mean
are those vast currents OF air blow
ing always at 200 miles an hour or
more at attitudes OF six or seven
miles or higher.
Although scientists had long sus-
pecied the existence Of these terrific
winds. which are due to the rotation
OF me earth, Captain Rudolph w.
Schroeder, OF the army air service
was the first TO prove their existence,
He reported after the flight at Day
on, o.. in which he broke the worlds
altitude record, that at one time FAR
above The earth he encountered a
wind OF 220 miles an hour. Although
he was speeding at the rate Of 100 miles
an hour he was actually being blown
backwards at the rate OF i20 miles an
Above this West TO East wind.
the scientists believe. is a period OF
comparative calm, and above this an
other great air current blowing in
the opposite direction. These winds
| am sure are 10 play a great part in
mans future transportation. which
VIII be many times faster than 1t is
at present.
1.-TWO recent inventions go far to-
ward making this conquest Of the
higher attitudes certain There are
The supercharger. or turbebooster, and
The variable pitch propeller Both
are designed to overcome the dinl-
culties Of flying rapidly in the rarer
air far above the earth. The super
charger or booster is a device which
congresses the thin air 10 sea level
density, fifteen pounds per square
inch, before it is fed 10 the carbure-
tor. Motors require air Just as much
MS do human beings. and without
this device the motor at high alti-
tudes does not develop half its sea
level power
THE other device. the variable
pitch propeller. Is a propeller the
blades OF which may be turned in
fight so That they have a great or
small pitch This makes it possible
TO adjust the propeller to give the
greatest forward or climbing mo-
ton succcssively as the plane mounts
from dense air 10 lighter air.
Other problems which must b.
faced are oxygen supply and heat for
passengers. il the terrific speed OF
these air currents is 20 be used for
the transportation OF men, mail and
fast freight These will easily be
overcome, however for the speed OF
300 miles an hour or more. given by
aiding the speed Of these air currents
to the speed OF the machine. is too
valuable to man TO be held up by
small obtsacleS This speed means,
as Captain Schroeder and others have
predicted, breakfast in San Francisco
and dinner in New York and New
York to London in a single daylight
flight