1499

Item 1499

DESIGN: Single-Bladed All Electric Rotor- Rotor Hub - Hub #4

Proposed Means of Achieving the Objective:
PROBLEM: See the end of this section.

The motor is on the left and the blade is on the right. The precone of 2.5º is just noticeable in the pictures.

This arraignment may not be perfect but it does replace a 1.16" horizontal 1P vibration with a 0.1019" vertical 2P vibration. This is a good start

An alternative will be to use links of the same length and a unequal difference in the horizontal distance between the pivot points in the hub and the horizontal distance between the pivot points in the blade-counterweight.

PROBLEM: The movement of the links will move the pinion in respect to the crown.

Could consider double universal joint and telescoping shaft.

Or because the angular and linear movement is so small consider some style of flexible coupling. The Rexnord Omega?

Initially displayed: January 9, 2006 ~ Posted on PPRuNe; January 11, 2006; on Rotary Wing Forum; January 9, 2006~ Last Revised: February 7, 2006

The above utility invention is openly and publicly disclosed on the Internet to negate an entity from patenting it, to the exclusion of all others whom may wish to use it. ~ Reference patent law 35 U.S.C. 102 A person shall be entitled to a patent unless - (a) the invention was known ... by others in this country, ..., before the invention thereof by the applicant for patent.