JPS55117986A - Pressure release time measuring unit - Google Patents

Pressure release time measuring unit

Info

Publication number
JPS55117986A
JPS55117986A JP2636179A JP2636179A JPS55117986A JP S55117986 A JPS55117986 A JP S55117986A JP 2636179 A JP2636179 A JP 2636179A JP 2636179 A JP2636179 A JP 2636179A JP S55117986 A JPS55117986 A JP S55117986A
Authority
JP
Japan
Prior art keywords
light beam
pressure release
jet
jet path
solar battery
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.)
Pending
Application number
JP2636179A
Other languages
Japanese (ja)
Inventor
Shuichi Sakuma
Shunichiro Yamamoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2636179A priority Critical patent/JPS55117986A/en
Publication of JPS55117986A publication Critical patent/JPS55117986A/en
Pending legal-status Critical Current

Links

Landscapes

  • Geophysics And Detection Of Objects (AREA)
  • Measurement Of Unknown Time Intervals (AREA)

Abstract

PURPOSE: To make it possible to measure a gas jet time with a high precision by causing a parallel beam of a laser light beam to pass through a gas jet path and by utilizing the schlieren method to measure the gas jet time.
CONSTITUTION: During normalcy where atmospheric pressure is not changed in jet path 11, a prescribed light quantity of laser light beam O condensed onto focus face 6 is received through pin hole 7a by solar battery 8 which is a light receiver. The output of a prescribed level is transmitted from solar battery 8 and is inputted to recorder 10, etc., through DC amplifier 9. When the pressure release film is broken to generate gas jet in jet path 11 due to rise of the internal atmospheric pressure at the pressure release test time of an arrester, gas density in jet path 11 is changed, and therefore, laser light beam O passing through jet path 22 does not become a parallel light beam, and the focus face is moved to, for example, position 6a. Therefore, the output of solar battery 6 is reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP2636179A 1979-03-06 1979-03-06 Pressure release time measuring unit Pending JPS55117986A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2636179A JPS55117986A (en) 1979-03-06 1979-03-06 Pressure release time measuring unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2636179A JPS55117986A (en) 1979-03-06 1979-03-06 Pressure release time measuring unit

Publications (1)

Publication Number Publication Date
JPS55117986A true JPS55117986A (en) 1980-09-10

Family

ID=12191344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2636179A Pending JPS55117986A (en) 1979-03-06 1979-03-06 Pressure release time measuring unit

Country Status (1)

Country Link
JP (1) JPS55117986A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0425151A (en) * 1990-05-21 1992-01-28 Canon Inc Thin plate carrying device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0425151A (en) * 1990-05-21 1992-01-28 Canon Inc Thin plate carrying device

Similar Documents

Publication Publication Date Title
JPS5616802A (en) Method and unit for measuring electro-optically dimension,position and form of object
JPS5593008A (en) Signal formation unit
JPS55117986A (en) Pressure release time measuring unit
Salyer Laser differential interferometry for supersonic blunt body receptivity experiments
JPS5790139A (en) Measuring device for spray particle size
JPS5767815A (en) Measuring method for position of reflector using light
JPS5669505A (en) Laser position detecting device
JPS56138204A (en) Displacement measuring equipment
JPS5435759A (en) Measuring method of numerical aperture of optical fibers
JPS5752807A (en) Device for measuring film thickness
JPS5792510A (en) Etching of silicon nitride film
JPS5473065A (en) Interferometer
JPS5483870A (en) Air curtain nozzle of laser speed meter
JPS55124008A (en) Defect inspecting apparatus
JPS5614933A (en) Sample inspecting device
JPS5342881A (en) Measuring apparatus of leaked flowing amount
JPS5599045A (en) Surface reflection measuring apparatus
Tulis et al. Characterization of shock and reaction fronts in detonations
JPS57101732A (en) Method for measuring temperature using raman light
JPS55143477A (en) Measuring method for intensity of neutrino beam
ES8104877A1 (en) Method and device for the measurement of laser radiation absorption in media.
JPS57182604A (en) Interference measuring device
MEGIE Atmospheric temperature and pressure measurements using differential lidar absorption- Influence of laser emission spectral width
JPS52110031A (en) Detector for focusing
Briggs et al. Instrumentation of the Ames Supersonic Free-flight Wind Tunnel