1941-01-01

SUPERCHARGED Aircraft Ignition Harnesses 410095

SUPERCHARGED aircraft ignition harnesses have recently been introduced into commercial aviation as a means of preventing the entrance, formation, and accumulation of impurities within the shielded distribution systems universally employed on airplanes using high-sensitivity radio receivers.
This paper presents a discussion and description of the operation and performance of the supercharged harness.
Introductory to this material, and in the interest of a better understanding thereof, there is presented a general review of the fundamental character of the troubles experienced with ignition distribution. Included in this is a description of the chemical nature of the problem and a mathematical analysis of certain electrical stresses within the system which are related to the formation of corona.
A summary is made of various other designs of harnesses which have been set forth in an effort to eliminate the ignition distribution problem and it is pointed out wherein each has its weaknesses.
In support of the contention that the supercharged harness makes possible complete relief from the troubles associated with harness contamination a perfect service record of 5,000,000 engine miles is cited.

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