FR799940A - Device which makes it practically impossible to detect the sound of an airplane in flight - Google Patents

Device which makes it practically impossible to detect the sound of an airplane in flight

Info

Publication number
FR799940A
FR799940A FR799940DA FR799940A FR 799940 A FR799940 A FR 799940A FR 799940D A FR799940D A FR 799940DA FR 799940 A FR799940 A FR 799940A
Authority
FR
France
Prior art keywords
airplane
flight
sound
detect
practically impossible
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
Other languages
French (fr)
Inventor
Charles Marie Roveroli Jacques
Antoine Menier
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 filed Critical
Application granted granted Critical
Publication of FR799940A publication Critical patent/FR799940A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/16—Silencing apparatus characterised by method of silencing by using movable parts
    • F01N1/165—Silencing apparatus characterised by method of silencing by using movable parts for adjusting flow area

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
FR799940D 1935-03-26 1935-03-26 Device which makes it practically impossible to detect the sound of an airplane in flight Expired FR799940A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR799940T 1935-03-26

Publications (1)

Publication Number Publication Date
FR799940A true FR799940A (en) 1936-06-23

Family

ID=9237086

Family Applications (1)

Application Number Title Priority Date Filing Date
FR799940D Expired FR799940A (en) 1935-03-26 1935-03-26 Device which makes it practically impossible to detect the sound of an airplane in flight

Country Status (1)

Country Link
FR (1) FR799940A (en)

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