Evening star. [volume] (Washington, D.C.) 1854-1972, 1933-01-08

CT ulS6 WHICH mas JIlSG De6n COnpI
yet made by organized amateur a
1t is the purpose Of the amateur
pilots, as a group, to promote private
flying and amateur aerial competition,
through the holding of meets and
cruises in various parts of the country.
To this end they have created the
United States Amateur Air Pilots Asso-
citation, which becrS to amateur flying
the same relationship the United States
Golf Association holds to amateur golf.
The association has defined an anna
teur pilot as one who holds license OF
the Department of Commerce and who
is not paid directly or indirectly for
plotting an aircraft The association rec
ognizeS as an amateur an aviation ex-
ecutive or employe whose duties do not
directly include plotting an aircraft and
does not recognize the making of &C.
caSional test flights by an airplane de-
signer as a barrier to amateur standing.
1t does, however. bar from amateur
| ranks pilot statesmen and others who
regularly make demonstration or test
| flights.
Amateur pilots may forfeit their
standing by entering any competition
| open only to professionals, accepting
| any pecuniary reward for using or per-
uniting himself to be advertised as US
ing the goods of a manufacturer. agent
or merchant, by accepting any pecuniary
award in excess of actual personal ex-
penses for appearing at any air meet
or airport, by flying less than 10 hours
annually, or being guilty Of unsports-
manlike conduct.
The National Capital has several
amateur pilots who have recognized am
ateur standing. Mrs. John T. Remey,
/ dQ1Iol1fpr Of D vi nf sc
city, was one of the original starters in
this years cruise. She is recognized as
one of the country's leading amateur
woman flyers and is former commander
Of the Betsy Ross Corps. Chester H.
| warrington, local automobile dealer. Is
active as sportsman pilot and is local
! governor for the amateur association.
He also is head of the Washington Air
| Derby Association, a permanent civic
| body organized to promote aviation in
the National Capital Crosby N. Boyd,
who flies his own Stinson cabin mono
plane, and G. M. Henderson, 1901 Ar
COME place, local business man, are
others who have recognized amateur
standing here. Mr.. Warrington and
| Mr. Boyd both fled applications to
join the cruise, but were unable to leave
because Of private business. Mr. Hen
derson joined the cruise at CJalege Park.
Atrial Rates Cut.
| Arrival of the new year was the
| signal tor sharp reduction of air-rail
| fares between the National Capital and
| other Atlantic seaboard cities and points
| in Central and South America and the
West Insies, the reduction in some
| cases amounting to 80 per cent. The
new fares affect travel to seven Carib-
bean countries. They were arranged
| by Pan-American Always and the
Trunk Line Association and the South
eastern Passenger Association, repre-
| senttng the participating railroads.
The new rates are said to bring the
combined air-rail travel down to the
level of ordinary surface tranSporta-
| ton. Rail transportation down the At
| lantic Coast to Miami is planned, all
| travel beyond Miami being by air. The
rate cuts are expected to result in in
creased Winter tourist travel to the
Caribbean countries, all of which have
| been brought within three days of New
! York and washington.
New Plane Nears Tests.
The first of a fleet of go new type,
| low-wing twin-motored monoplaneS now
! being built for transcontinental use, is
! to be ready for flight testing this month
and 18 of them will be completed by
! the end of March. The last of the 60
will be ready by the end of the Sum-
mer, according to officials of United
Airlines, which placed the order for
the 60 ships, one of the largest ever
| placed by an air transport organization
The new planes are heralded as the
fastest multi-motored aircraft in the
world. They are designed on the lines
| Of the sensational new Army bombers
| and are expected to cruise at 155 miles
per hour, with full fuel load, 10 pas
sengers and 400 pounds Of cargo.
Operation of these planes is going to
| make necessary rewriting Of air trans
| port schedules over a large part of the
United States, since not only will all
main line schedules be stepped up, but
| all interconnecting runs will be affected
Coast-to-coast schedules will be reduced
to little more than a day.
Noise Problem Battling.
Prolonged research by engineers of
the Army Air Corps into the silencing
of military airplanes has just about
convinced them that the only COM
pletely silent airplane likely to be
and now unforeseen change in motive
power, is the airplane on the ground
with the motor shut of.
While noises, in commercial air trans
port operation, are source OF nothing
more than annoyance, they are in mill
tary operation a source of positive
danger and materially reduce the eff
fectiveneSS of the airplane as used
against ground targets by reducing or
destroying the invaluable element of
surprise.
In discussion of the results of the
ArmyS investigation of sound reduc-
ton, Maj. F. H. Coleman, Air Corps,
said that considerable progress has
been made, but that the results still
are far short of the goal desired. It
now is possible SO to silence single
motored airplane that it cannot be
heard from the ground when flying at
an altitude of about 5000 feet under
normal atmospheric conditions.
The principal sources of airplane
noise, in the order of their Importance,
Maj. Coleman said, are the propeller,
the eXhauStS, engine clatter and
whistling wires. The noise energy" of
any one of these sources is so great,
he said, that even large reductions in
that energy result in only what appear
to be small reduction in the noise
heard.
Lie COQNeIlLlOlldl duUOulODlIe IIluIIleT
is very effective. One of the same type,
to be made equally effective for 500
horsepower airplane motor, however,
.ould have to be about the size of a
25-gallon barrel, which obviously makes
its use pruhibitive. Reduction Of size
has proved a tremendously difficult
problem. especially in view of the fact
that the reduction of sound must not
be accompanied by material increase
in muff1er back pressure" which
greatly reduces engine power.
Noise Loss Not PropOrtionate.
1t has been found that tremendous
reductions in noise energy must be made
to obtain relatively immaterial reduc-
tions in heard noise, Maj. Coleman
said. If, for example, 100 decibels
(fhn standard Unit of mise mnaSIlre-