Power transmission system

A power transmission system adapted to transmit forces from a motor that generates a first rotational movement to a component, the power transmission system comprising:

• an externally threaded shaft that is configured to be rotatably attached to the motor and performs a second rotational movement;
• an internally threaded fastener that is movably attached to the externally threaded shaft and performs a movement along the externally threaded shaft in response to the second rotational movement;
• a first element that comprises:
• a first end that is movably attached to the internally threaded fastener at a first joint, and
• a second end;
• a second element that comprises:
• a plateau having a first end and a second end, wherein
• the first end is movably attached to the second end of the first element at a second joint, wherein the first element transmits the forces from the first joint to the second joint, and
• the second end is adapted to be rigidly attached to the component at a third joint, wherein the plateau transmits the forces from the second joint to the third joint by transforming a rotational movement of the second joint into a rotation of the component;
• a third element that comprises:
• a first end that is movably attached to the internally threaded fastener at a fourth joint that is positioned on the internally threaded fastener at a side that is opposite the first joint, and
• a second end;
• and
• an additional plateau that is movably attached to the second end of the third element at a fifth joint and adapted to be attached to the component, wherein the first and third elements together with the plateau and the additional plateau form a guide bracket that is adapted to guide movement of the internally threaded fastener along the externally threaded shaft.

A helicopter comprising:

• a fuselage;
• an external load device connected to the fuselage via a component;
• and
• a power transmission system adapted to transmit forces from a motor that generates a first rotational movement to the component, the power transmission system comprising:
• an externally threaded shaft rotatably attached to the motor and capable of performing a second rotational movement;
• an internally threaded fastener movably attached to the externally threaded shaft and capable of performing a movement along the externally threaded shaft in response to the second rotational movement;
• a first element comprising:
• a first end movably attached to the internally threaded fastener at a first joint, and
• a second end;
• and
• a second element comprising:
• a plateau having a first end and a second end, the first end movably attached to the second end of the first element at a second joint to enable the first element to transmit the forces from the first joint to the second joint, and
• the second end adapted to be rigidly attached to the component at a third joint to enable the plateau to transmit the forces from the second joint to the third joint by transforming a rotational movement of the second joint into a rotation of the component.