Piedmont Aviation News — Page 2,
Friday, September 28, 1945
J Isu’t it about time for another party,
Kiss Adams — before cold weather sets dn?
NEV7S FRCM THE FLIGHT DEPARli/iENT
kessrs. Gurney Smith and W.C. Baker are
making a cross-country trip to Detroit,
i/iichigan. With Navigator Baker aboard
we are sur’e Pilot Smith will not miss the
airport more than a few feet,
kr. Frank Groat is traveling this week.
Thursday he made a round trip to Charles
ton, West Virginia, and on Friday ho
leaves for Washington, D.C. to spend a
couple of days.
Mr. Charles Vestal has returned from_
Lock Haven, Pennsylvania, where he visited
the Piper factory. He reports that their
strike is over ajid they will soon be in
full production. The shop welcomes this
I'Jhen arc H. Brendle and W.C. Baker
taking their private's Flight Test? Baker
should be through his spins by now.
kiss Nell Adams is learning to fly. She
did acrobatics in the F^an with Pilot
Gurney Smith at the controls•
Dihedral; A wing design in which the
wing tips are raised above the center
section portions of a wing. Its^effect
is to improve its lateral stability.
Cathedral; A condition in which the
yjings slope downvjard from the plane of
symmetry of the airplane•
(Through a typographical error the v/ord
"ANGLE" was spelled incorrectly in last
week’s issue of the News.)
Angle of Incidence; A fixed angle be
tween the plane of the wing chord and the
line of thrust or any other longitudinal
line which is level when the fuselage is
level longitudinally. Angle of incidence
is the same as angle of wing setting*
PCIM; A designation found on Page 1 of
the "Operations Record (Form 309) which
signifies that the aircraft in question
is an (P) airplane, a (C) Cabin plane,
a (L) Landplane, and a (M) Monoplane.
New words for next week:
STRUT, SPAR, CASTLE NUT, POLM
VffilGHT and BALAImCE
by F. H. Ponish
When additional equipraent affecting
the aircraft balance is installed in an
airplane, or when such equipment is re
moved from the plane, the new C.G.
location has to be calculated. This cal-
culation is really ver-y simple.
You know from your previous vjork that
Moment is the product of a weight and
its arrri. Keep this in mind and you
should not have any trouble.
Let us find the now empty C.G. locatioi
of an airplane after we install a
battery weighing 20 lbs., on an arm of
/ 3. Before the installation of the
battery, the aircraft empty weight was
687 and the C.G. location 15.72*
Arrange your work as follows;
Yft. Am Moment
(lbs.) tSi.) (in.lb.)
New AM/ 707
New C.G. Location = 10859*64 = 15.36
In the above case v/o added a 20 lb.
weight to the AEV/, giving us a new kW
of 707 lbs. By dividing the sum of the;
moments by the new AEW weight, we ob
tained the new C.G. location of Ip.3^.
lbs., C.G. Location—13.45.
The following equipment was installeo.
this airplane; Radio transmitter, 20
arm / 42; Radio receiver, 15 lbs. aiv
/ 4; Batte:^, 30 lbs. arm / 1. Fxna .
C.G. Location. Answer; 13.51