Intentionally imbalancing propellers for performance and noise-shaping

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9902490
SERIAL NO

15658168

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Aerial vehicles may be operated with discrete sets of propellers, which may be selected for a specific purpose or on a specific basis. The discrete sets of propellers may be operated separately or in tandem with one another, and at varying power levels. For example, a set of propellers may be selected to optimize the thrust, lift, maneuverability or efficiency of an aerial vehicle based on a position or other operational characteristic of the aerial vehicle, or an environmental condition encountered by the aerial vehicle. At least one of the propellers may be statically or dynamically imbalanced, such that the propeller emits a predetermined sound during operation. A balanced propeller may be specifically modified to cause the aerial vehicle to emit the predetermined sound by changing one or more parameters of the balanced propeller and causing the balanced propeller to be statically or dynamically imbalanced.

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Patent Owner(s)

Patent OwnerAddress
AMAZON TECHNOLOGIES INCPO BOX 81226 SEATTLE WA 98108-1226

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Beckman, Brian C Newcastle, US 165 2882
Ko, Allan Fremont, US 19 41

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