Page 3 - Combined_133_OCR
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SOS* ... NOv
BOLTS Techni(
ximately 0.04. Of some 50 automobiles measured, the aver
ly results from age length-to-effective-diameter ratio was ap- on the
ure drag. One nt your costs...improve
hape and any
he ideal body our product quality EVALUATION OF AUTOMOBILE BODY CONTOURS
mid-air, while
its four wheels
lition of well- itandards Or Specials—your design Aerodynamic Rating
ly increases its loice is varied . . . ferrous or non- Item 1 2 3
o 0.15, or per- trrous metals.
Grille Blunt; Square Fairly sloped Well sloped
realizable for lark fasteners are found in all types
Lights Open; Exposed Partially inset Well faired
omobile body r products, in virtually every indus-
Hood Flat Fairly sloped Convex, sloped
sic automobile y. We add strength by cold forming
Windshield Steep Fairly sloped Well sloped
undersurfaces while holding close tolerances.
Windshield Flat Fairly curved Well curved
of about 0.4;^-Of. accurafe fasteners made by > 2 ■ -
Roof top Angular Fairly sloped Convex, sloped a o w 6 to 2 ,
Skilled Connecticut craftsmen who Rear window Notched Fairly sloped Fastback type
hown in com- e ca|| us Qr wrjte the name
Trunk Cutoff square Fairly sloped Fastback type
hapes, and the' your nearest C|ark warehouse A METAL-CU-
Wheels Exposed Partially closed Well concealed
stributor. details the study of silv
Underside Exposed Partial pan Full pan
copper. Conclusion: Silvi
machinable under the coi
proximately 2.8, yet the average drag coef
ficient of these same vehicles was 0.41, or more
than 10 times the drag coefficient of the ideal
shape. The increased drag coefficient results
MILLDALE, CONNECTICUT
from discontinuous contours of these bodies
and to the local disturbances to the flow over
them. Ten factors that determine the overall
contour of an automobile are graded numer
8 10 An Oxidation Resistance Investigation
d ically from 1 to 3 according to their aerody of Silver-Bearing Copper
LINED BODIES namic qualities.
On this basis, a well-streamlined automobile
AN OXIDATION R
compares oxidation beh<
bearing copper alloys ir
DRAG Conclusion: Silver-bearii
COEFFICIENT
resistance to oxidation a
>
0.45
— Cp > > White Pine Silver-Bearir
Drag co e fficie n ts provides certain superioi
0.51 _ the upper peninsula of IV?
A O o i > dispersed silver content *
0.64 o
particularly at elevated’
0.95 ■6. scribed above are just p
-D ---- C d«0.41 - n tinuing research active
1.17 u advantages of silver-beai
WRITE FOR '
Aerodynamic rating
IUS SHAPES SHAPE EFFECTS ON DRAG
ag are exam COPPER Rl
estimates of
an be made would have a rating of 30, and a very poor
f the vehicles, aerodynamic shape, such as a'World War II
so is discussed Jeep, would have a rating of 10. The “aver 630 Fifth Avenue
proximity to age” automobile of today has two or three New York, New York 10020
elopment. times the air drag of experimental automobiles
(Continued on next page) Circle S
£
GN N <XRCH 31, 1965
