Picjmont Aviation Nevjs - Pa/rp 2
is on a six vjeeks leave of absence, vVe
viish hira a speedy recovery a needed
operation.
ANNaJNCaiEN'TS
V/eather permitting, there will be a
picnic of the Piedmont Aviation Inc.
Flying Club on Friday, September 7th,
6:30 P.k. at Reynolds Park, All P. A.
employees who are not members of the
Club are invited. For further details
please ask Kiss Nell Adams or lirs, Ellon
Ench.
IVEIGHT iiND B^aNCE
By F. H. Ponish
Refer to Fig. 1 and 2 (Page 2- P. A.
News, Vol. 1, No. 2),
If wc know the distance A-B, and the
weights \Vi and W2^ we can find the arms
A-F and B-F. To do this, multiply the
distance A~B by W2 and divide this pro
duct by W]_ / VV2. The answer thus ob
tained is the arm A-F. To find B-F multi
ply the distance A-B by and divide
this product by W]_ / W2. It is of course
evident that, 5f one am has been found,
the other ann may be obtained by sub
tracting the known arra from the distance
n-B.
Let us use Fig, 2 as an example:
A-B = 30". 10 lbs., V/2 = 5 lbs.
Find A-F.
30 X 5 - 150 - 10
10 / 5 15
A-F = 10". B-F = 30 - 10 = 20"
The same result can be obtained by cal
culating the arm B-F.
30 X 10 - 300 - 20"
10 f~T 15 *■
B-F = 20". A-F = 30 - 20 a 10"
In all V/eight and Balance Reports the
arms are given in inches and the weight
in pounds, lionents, being the product of
pounds and inches, are given in inch-
pouiidop The abbreviations used for these
quantities are:
Friday, So ptcmber 7. 1945.
Pounds lbs.
Inches in.
Inch-Pounds in. lbs.
PROBLEIviS:
1). Wi ifi 123 lbs., W2 is 17 lbs.
A-B is 70". Find A-F.
Ans. 8,5"
2). W]_ is 927 lbs. Wp is 73 lbs.
h-B is 100". Find A-F.
nns. 7.3"
3). Wi is 1292 lbs. W2 is 58 lbs.
A-B is 100". Find “A-F.
Ans. 5.37"
4). is 631 lbs. ?/2 is 52 lbs.
A-B is 200". Find A-F.
Ans. 15.23"
5). is 40 lbs. W2 is 20 lbs,
A-B is 75". Find B-F.
Ans. 50"
Give all answers to the nearest 2 deci
mal places. To do this you must work
your answer to the nearest 3 decimal
places. If the third place is less than
5, merely drop it from your answer. If
the third place is 5 or more, add 1 to
the second decimal place. To illustrate:
If the answer is 12.352 give it as 12,35
If your answer is 12,355 give it as 12,36
If you have difficulty in multiplying
and dividing decimal fractions, do not
hesitate to call on me for help,
AVIATION VOC.iBULaRY
CLEVIS- a U-shaped device with the end;
perforated to receive a pin or bolt.
VENEER- a th-iji sheet of wood.
PLYT'/OCD- layers of wood veneer securely/
glued together with the grain at an
angle to each other.
LAtilN^iTED V/OOD- a product formed by
gluing or otherwise fastening together
a nuT-iber of lojainations of wood with
the grain substantially parallel.
Ascertain the meaning of the followiui;
words this week:
hIRPL^E RIGGING B.tFFLE,CR B.iFFLS PL.Tj
CARBURETOR /1LCL1D