Reduced noise rotor for aerial vehicles
AssigneeZipline International Inc.
InventorBrendan J.D. Wade
Life of this patent
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Abstract
An aerial vehicle is disclosed including a rotor assembly having a downstream blade and a upstream blade. The downstream and upstream blades are configured to rotate about an axis of rotation. The downstream blade may be arranged extending outward from the axis of rotation along a downstream blade orientation. The upstream blade may be arranged extending outwards from the axis of rotation along a upstream blade orientation that is non-orthogonal to the downstream blade orientation. The downstream blade and the upstream blade may be axially offset from one another along the axis of rotation.
Claims19
An aerial vehicle comprising:
- a rotor assembly comprising:
- a downstream blade,
- an upstream blade, the downstream blade and the upstream blade configured to rotate about an axis of rotation, and
- a blade shaft coupled with the downstream blade and the upstream blade defining a keyed pathway extending along and at least partially about the axis of rotation, the blade shaft configured to rotate about the axis of rotation;
- and
- wherein
- the downstream blade is arranged extending outward from the axis of rotation along a downstream blade orientation and the upstream blade is arranged extending outwards from the axis of rotation along an upstream blade orientation that is non-orthogonal to the downstream blade orientation, and
- one of the downstream blade or the upstream blade is movable relative to the other of the downstream blade or the upstream blade longitudinally along the axis of rotation by the keyed pathway.
Dependencies are inferred from the claim text.