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Patent Searching and Data


Title:
MULTICOPTER AND MUFFLING DEVICE
Document Type and Number:
Japanese Patent JP2020040511
Kind Code:
A
Abstract:
To provide a technology for reducing noises of a drone.SOLUTION: In a drone 1, a muffling unit 50, which assumes such a shape as to cover a periphery around it, is attached to each rotary vane 20 by a predetermined an attachment structure. The muffling unit 50 comprises an annular frame 51, attachment openings 55 of through-holes, which are formed at regular intervals in a circumferential direction in the frame 51, and a resonator 53 that is provided on the outer peripheral side of each attachment opening 55. The resonator 53, which is a helmholtz resonator, muffles noises generated by the rotary vane 20.SELECTED DRAWING: Figure 1

Inventors:
SHE JINHUA
WATANABE YOSHIJIRO
NAKANO MITSUO
SAMARATHUNGA WASANTHA
ICHIYANAGI KEN
OTANI ATSUSHI
ANDO HIROSHI
ARAI HIDEOMI
Application Number:
JP2018169248A
Publication Date:
March 19, 2020
Filing Date:
September 10, 2018
Export Citation:
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Assignee:
KIKUCHI SEISAKUSHO CO LTD
International Classes:
B64D33/00; B64C27/08; B64C39/02; G10K11/16; G10K11/172
Attorney, Agent or Firm:
Yukio Sakamoto