A shroud for an aircraft

A technology for aircraft and shields, applied in the field of aircraft shields, can solve the problems of time-consuming post-processing, expensive and other issues, and achieve the effect of reducing noise

Inactive Publication Date: 2018-01-19
DOTTEREL TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

UAV audio capture currently used for filming requires costly and time-consuming post-processing to remove noise created by UAVs

Method used

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  • A shroud for an aircraft
  • A shroud for an aircraft
  • A shroud for an aircraft

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Embodiment Construction

[0029] Various embodiments of shrouds are described below that can attenuate sound produced by aircraft propellers within the shroud by absorbing sound waves and reflecting and / or refracting sound. This may reduce the sound heard by the public and / or allow any audio recording equipment installed on the aircraft to more accurately record the audio sound.

[0030] The shrouds described below generally relate to fairings that at least partially surround an aircraft motor or propeller assembly. Noise reflection refers to changing the direction of sound energy / sound waves. Noise reflections are also changes in the direction of sound waves as they pass through a particular material. Sound absorption refers to the process by which a material, structure, or object absorbs sound energy when it encounters a sound wave, rather than reflecting it. Part of the absorbed energy is converted to heat and part is transmitted through the absorber.

[0031] Figure 1a A perspective view of a s...

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Abstract

A shroud for an aircraft having a noise reducing material on or in an inner surface of the shroud adjacent to one or more tips of the propeller. The noise reducing material is preferably an electrospun nanomaterial, particularly a ridged composite acoustic nanofibre. The interior surface of the shroud may be provided with a plurality of sound deflectors configured to dissipate sound by reflectionand refraction, and absorb sound into the shroud body. The sound deflectors may be ribs or arrangements of discrete reflector elements.

Description

technical field [0001] The invention relates to shrouds for aircraft. More particularly, but not exclusively, the present invention relates to a shroud for minimizing noise from an unmanned aerial vehicle (UAV). Background technique [0002] Many aircraft - such as UAVs, helicopters, vertical lift systems, and fixed wing aircraft - disadvantageously generate noise from their motors and propellers. As such, they may be a nuisance to the surrounding environment, increasing noise pollution. [0003] Noise created by propellers is particularly problematic for UAVs used in video and audio capture for filming. UAV audio capture currently used for filming requires costly and time-consuming post-processing to remove the noise created by the UAV. Contents of the invention [0004] The present invention may provide an improved shield for reducing propeller noise, especially for UAVs in the noise spectrum useful for audio capture, or at least provide the public with a useful choic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C27/20B64C11/48B64C11/00B64C39/02B64C27/08B64C27/46B64D33/02
CPCB64C39/024B64C27/20B64U10/13B64U30/20B64C27/08B64C2220/00
Inventor 塞缪尔·西莫·罗肖恩·塔格特·彭特科斯特
Owner DOTTEREL TECH LTD
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