FR491150A - Device measuring the speed of an airplane - Google Patents

Device measuring the speed of an airplane

Info

Publication number
FR491150A
FR491150A FR491150DA FR491150A FR 491150 A FR491150 A FR 491150A FR 491150D A FR491150D A FR 491150DA FR 491150 A FR491150 A FR 491150A
Authority
FR
France
Prior art keywords
airplane
speed
device measuring
measuring
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
Leon-Emile Lemperiere
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.)
LEON-EMILE LEMPERIERE
Original Assignee
LEON-EMILE LEMPERIERE
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 LEON-EMILE LEMPERIERE filed Critical LEON-EMILE LEMPERIERE
Application granted granted Critical
Publication of FR491150A publication Critical patent/FR491150A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
FR491150D 1915-04-22 1915-04-22 Device measuring the speed of an airplane Expired FR491150A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR491150T 1915-04-22

Publications (1)

Publication Number Publication Date
FR491150A true FR491150A (en) 1919-05-22

Family

ID=1527186

Family Applications (1)

Application Number Title Priority Date Filing Date
FR491150D Expired FR491150A (en) 1915-04-22 1915-04-22 Device measuring the speed of an airplane

Country Status (1)

Country Link
FR (1) FR491150A (en)

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