Compliant shaft enclosure support system to limit rotation

A compliant shaft enclosure support system for coupling to a shaft enclosure surrounding a shaft which is rotatable relative to a structure around a longitudinal axis of the shaft as a roll axis, the shaft being configured to roll around the roll axis, to pitch around a pitch axis perpendicular to the roll axis, and yaw around a yaw axis perpendicular to both the roll axis and the pitch axis, the compliant shaft enclosure support system comprising:

• a bar having a first longitudinal member slidably coupled to a second longitudinal member, the bar being oriented along the pitch axis of the shaft, the first longitudinal member having a first bar end of the bar, the second longitudinal member having a second bar end of the bar;
• a first connecting mechanism configured to rotatably connect the first bar end of the bar to the shaft enclosure at a first connection to be rotatable relative to the shaft enclosure around the roll axis and around the pitch axis;
• a second connecting mechanism configured to rotatably connect the second bar end of the bar to the structure at a second connection to be rotatable relative to the structure around the roll axis and around the pitch axis;
• and
• a third connecting mechanism configured to rotatably connect an intermediate location of the bar spaced from the first bar end and from the second bar end of the bar, to the shaft enclosure at a third connection, to be rotatable relative to the shaft enclosure around the roll axis and around the pitch axis, the third connection being spaced from the first connection.

A method of for coupling to a shaft enclosure surrounding a shaft which is rotatable relative to a structure around a longitudinal axis of the shaft as a roll axis, the shaft being configured to roll around the roll axis, to pitch around a pitch axis perpendicular to the roll axis, and yaw around a yaw axis perpendicular to both the roll axis and the pitch axis, the method comprising:

• rotatably connecting a first bar end of a bar to the shaft enclosure at a first connection to be rotatable relative to the shaft enclosure around the roll axis and around the pitch axis;
• rotatably connecting a second bar end of the bar to the structure at a second connection to be rotatable relative to the structure around the roll axis and around the pitch axis, the bar having a first longitudinal member slidably coupled to a second longitudinal member, the bar being oriented along the pitch axis, the first longitudinal member having the first bar end of the bar, the second longitudinal member having the second bar end of the bar;
• and
• rotatably connecting an intermediate location of the bar spaced from the first bar end and from the second bar end of the bar, to the shaft enclosure at a third connection, to be rotatable relative to the shaft enclosure around the roll axis and around the pitch axis, the third connection being spaced from the first connection.