GB967995A - Improvements in acoustic attenuating devices - Google Patents

Improvements in acoustic attenuating devices

Info

Publication number
GB967995A
GB967995A GB1329360A GB1329360A GB967995A GB 967995 A GB967995 A GB 967995A GB 1329360 A GB1329360 A GB 1329360A GB 1329360 A GB1329360 A GB 1329360A GB 967995 A GB967995 A GB 967995A
Authority
GB
United Kingdom
Prior art keywords
source
april
close
ground level
duct
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1329360A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1329360A priority Critical patent/GB967995A/en
Publication of GB967995A publication Critical patent/GB967995A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F1/00—Ground or aircraft-carrier-deck installations
    • B64F1/26—Ground or aircraft-carrier-deck installations for reducing engine or jet noise; Protecting airports from jet erosion

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Exhaust Silencers (AREA)

Abstract

967,995. Silencing gaseous currents. P. H. PARKIN. April 26, 1961 [April 13, 1960], No. 13293/60. Heading F1B. Means for attenuating the noise emanating from a source 6 situated above ground level comprises a duct having open input- and output ends 2, 10, and means 3, for locating the input end at or close to the source of noise and means for deflecting the acoustic energy fed into the duct axially to or close to ground level whereby sound in the 150 to 350 cycles per second frequency band is preferentially absorbed by the ground. The inlet 2 is adjusted to the source 6, e.g., an aircraft jet engine, by a cable and counterweight arrangement 3, 4, 13, 14 on a slideway 5 and is connected by a flexible section 7 to a rigid section 8, leading to a further flexible section 9 and to outlet nozzle 10. The assembly is mounted on a wheeled carriage 12 having chock devices 11. The silencer may be located after or surrounded by a conventional muffler.
GB1329360A 1960-04-13 1960-04-13 Improvements in acoustic attenuating devices Expired GB967995A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1329360A GB967995A (en) 1960-04-13 1960-04-13 Improvements in acoustic attenuating devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1329360A GB967995A (en) 1960-04-13 1960-04-13 Improvements in acoustic attenuating devices

Publications (1)

Publication Number Publication Date
GB967995A true GB967995A (en) 1964-08-26

Family

ID=10020323

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1329360A Expired GB967995A (en) 1960-04-13 1960-04-13 Improvements in acoustic attenuating devices

Country Status (1)

Country Link
GB (1) GB967995A (en)

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