Unducted thrust producing system
AssigneeGeneral Electric Company
InventorsAndrew Breeze-Stringfellow, Syed Arif Khalid, Leroy Harrington Smith, Jr.
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Abstract
An unducted thrust producing system has a rotating element with an axis of rotation and a stationary element. The rotating element includes a plurality of blades each having a blade root proximal to the axis, a blade tip remote from the axis, and a blade span measured between the blade root and the blade tip. The rotating element has a load distribution such that at any location between the blade root and 30% span the value of ΔRCu in the air stream is greater than or equal to 60% of the peak ΔRCu in the air stream.
Claims24
An unducted thrust producing system for a design operating condition including flight speed, rotational speed, and thrust, comprising:
- a stationary element;
- and
- a rotating element comprising:
- an axis of rotation;
- and
- a plurality of blades, each of said plurality of blades comprising:
- a blade root proximal to said axis;
- a blade tip remote from said axis;
- and
- a blade span measured between said blade root and said blade tip,
- wherein said rotating element at said design operating condition has a load distribution such that at any location between said blade root and 30% span the value of ΔRCu is greater than or equal to 70% of the peak ΔRCu.
An unducted torque producing system for extracting energy from an air stream for a design operating condition including air stream velocity, rotational speed, and energy extraction, said unducted torque producing system comprising:
- a stationary element;
- and
- a rotating element comprising:
- an axis of rotation;
- and
- a plurality of blades, each of said plurality of blades comprising:
- a blade root proximal to said axis;
- a blade tip remote from said axis;
- and
- a blade span measured between said blade root and said blade tip,
- wherein said rotating element at said design operating condition has a load distribution such that at any location between said blade root and 30% span the value of ΔRCu is greater than or equal to 70% of the peak ΔRCu.
Dependencies are inferred from the claim text.