IT1198021B - AIRCRAFT PROPELLERS NOISE REDUCTION SYSTEM - Google Patents

AIRCRAFT PROPELLERS NOISE REDUCTION SYSTEM

Info

Publication number
IT1198021B
IT1198021B IT21463/86A IT2146386A IT1198021B IT 1198021 B IT1198021 B IT 1198021B IT 21463/86 A IT21463/86 A IT 21463/86A IT 2146386 A IT2146386 A IT 2146386A IT 1198021 B IT1198021 B IT 1198021B
Authority
IT
Italy
Prior art keywords
noise reduction
reduction system
aircraft propellers
propellers
aircraft
Prior art date
Application number
IT21463/86A
Other languages
Italian (it)
Other versions
IT8621463A1 (en
IT8621463A0 (en
Inventor
Authur Paul Adamson
Original Assignee
Gen Electric
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gen Electric filed Critical Gen Electric
Publication of IT8621463A0 publication Critical patent/IT8621463A0/en
Publication of IT8621463A1 publication Critical patent/IT8621463A1/en
Application granted granted Critical
Publication of IT1198021B publication Critical patent/IT1198021B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Wind Motors (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Toys (AREA)
  • Exhaust Silencers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
IT21463/86A 1985-08-09 1986-08-08 AIRCRAFT PROPELLERS NOISE REDUCTION SYSTEM IT1198021B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76414485A 1985-08-09 1985-08-09

Publications (3)

Publication Number Publication Date
IT8621463A0 IT8621463A0 (en) 1986-08-08
IT8621463A1 IT8621463A1 (en) 1988-02-08
IT1198021B true IT1198021B (en) 1988-12-21

Family

ID=25069809

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21463/86A IT1198021B (en) 1985-08-09 1986-08-08 AIRCRAFT PROPELLERS NOISE REDUCTION SYSTEM

Country Status (7)

Country Link
JP (1) JPS6271800A (en)
CN (1) CN1010205B (en)
DE (1) DE3626192A1 (en)
FR (1) FR2586130B1 (en)
GB (1) GB2179706B (en)
IT (1) IT1198021B (en)
SE (1) SE465870B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4913376A (en) * 1988-10-21 1990-04-03 Black Franklin E VTLH autogyro
US5169288A (en) * 1991-09-06 1992-12-08 General Electric Company Low noise fan assembly
DE60315959T2 (en) * 2002-03-15 2008-05-21 Robert Bosch Llc ENGINE COOLED FAN ASSEMBLY WITH OVERLAPPING WINGS
GB0702608D0 (en) 2007-02-10 2007-03-21 Rolls Royce Plc Aeroengine
GB2482333A (en) * 2010-07-30 2012-02-01 Ge Aviat Systems Ltd Aircraft propeller
US10522166B2 (en) * 2015-01-20 2019-12-31 Dolby Laboratories Licensing Corporation Modeling and reduction of drone propulsion system noise
CN108602554B (en) * 2015-12-18 2022-01-07 亚马逊科技公司 Method of operating an aircraft having a first set of propellers and a second set of propellers

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB492489A (en) * 1937-11-25 1938-09-21 Hermann Honnef Improvements in and relating to wind-operated power generators
GB521868A (en) * 1938-11-29 1940-06-03 Napier & Son Ltd Improvements in or relating to propelling or impelling apparatus of the axial flow type
FR2367660A1 (en) * 1976-10-14 1978-05-12 Gueguen Alain Gilbert Silencing of multi-engined jet aircraft - has sound waves from two engines arranged to be exactly out of phase with each other
SE433599B (en) * 1981-03-05 1984-06-04 Volvo Penta Ab DOUBLE PROPELLER DRIVE FOR BATAR
DE3519226A1 (en) * 1985-05-30 1986-12-04 Boris Alekseevič Stupino Moskovskaja oblast' Česnokov AIRCRAFT ENGINE

Also Published As

Publication number Publication date
FR2586130A1 (en) 1987-02-13
SE465870B (en) 1991-11-11
FR2586130B1 (en) 1989-12-22
SE8603347D0 (en) 1986-08-07
SE8603347L (en) 1987-02-10
CN1010205B (en) 1990-10-31
JPS6271800A (en) 1987-04-02
CN86105565A (en) 1987-02-04
IT8621463A1 (en) 1988-02-08
GB2179706B (en) 1990-04-18
GB2179706A (en) 1987-03-11
DE3626192A1 (en) 1987-02-19
GB8613547D0 (en) 1986-07-09
IT8621463A0 (en) 1986-08-08

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