Abstract: A synchronous signal generator is provided for use in conjunction with an aircraft engine having a spool and an engine output shaft driven by the spool. The synchronous signal generator includes a generator housing, a generator output member rotatably mounted in the generator housing, a once-per-revolution timing mark on the generator output member, and conversion gearing disposed within the housing and configured to couple the engine output shaft to the generator output member. The conversion gearing rotates the generator output member at substantially the same rotational frequency as the spool when the conversion gearing is coupled to the engine output shaft.

Abstract: A device and method for the lubrication of teeth in a meshing gear. A plurality of teeth are formed about a periphery of a toothed wheel. Each tooth is defined by a root portion, an involute profile portion, and a minimal stress portion. The device and method includes the formation of a plurality of fluidic passages, each including an inlet and an outlet, in fluidic communication with a lubricant and the minimal stress portion of at least one of the plurality of teeth. During operation, the lubricant contained flows via centrifugal force to the minimal stress portion of each of the plurality of teeth via the fluidic passages. The fabrication of the outlet of the fluidic passages at a minimal stress portion of at least one of the plurality of teeth eliminates any further stress fabrication on the portion of the tooth structure that is under stress during operation.