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• August 18, 2016 Create Date
• August 18, 2016 Last Updated

National Advisory Committee for Aeronautics, Report - Report on Investigations of Aviation Wires and Cables, Their Fastening and Thermal Connections

In reference to our investigations of aviation wires and cables,
their fastenings and terminal connections for sgiaiys, we have failed to
find from past practice anything that would ow us to determine
the best lines on which to proceed; therefore our study is not limited
to any one stay design.

In maln'nf our investigation we have aimed to eliminate the use of
acid and so der, im erfect bends, flatte ' of cable on bends injury
to wire, strand, an cord due to unskillful dling of material in the
field; and based on our study of present methods of manufacture of
aeroplanes we believe it is possible to manufacture the complete stay
here at the factory, proof test same to 50 per cent of its ultimate
strength, measure same under stress.

On this basis our research covered not only the terminal connection
for shop attachment, but also a connection that would allow repairs
to be made in the field without req ' ’ the use of blow torch and
solder, and from the following tests it be readily seen that the
develo ment eliminates any doubt on this point.

We find present practice considers “the solid wire sta ,” consist-
ing of one wire of suitable diameter and known to the tra e as “avia-
tion wire” ; ”the strand stay,” consisting of either 7 or 19 wires
stranded together and known to the trade as “ aviator strand”; also
“the cord or r0 e stay, ’ consistinfilof 7 strands twisted together
forming a rope, t e strands being ei er 7 wires or 19 wires; and the
rope known ‘to the trade as “aviator cord.”